mirror of
https://github.com/luau-lang/luau.git
synced 2024-12-13 13:30:40 +00:00
f5dabc2998
In this update we improve overall stability of the new type solver and address some type inference issues with it. If you use the new solver and want to use all new fixes included in this release, you have to reference an additional Luau flag: ```c++ LUAU_DYNAMIC_FASTINT(LuauTypeSolverRelease) ``` And set its value to `644`: ```c++ DFInt::LuauTypeSolverRelease.value = 644; // Or a higher value for future updates ``` ## New Solver * Fixed a debug assertion failure in autocomplete (Fixes #1391) * Fixed type function distribution issue which transformed `len<>` and `unm<>` into `not<>` (Fixes #1416) * Placed a limit on the possible normalized table intersection size as a temporary measure to avoid hangs and out-of-memory issues for complex type refinements * Internal recursion limits are now respected in the subtyping operations and in autocomplete, to avoid stack overflow crashes * Fixed false positive errors on assignments to tables whose indexers are unions of strings * Fixed memory corruption crashes in subtyping of generic types containing other generic types in their bounds --- Internal Contributors: Co-authored-by: Aaron Weiss <aaronweiss@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
4854 lines
131 KiB
C++
4854 lines
131 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#include "Luau/BuiltinDefinitions.h"
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#include "Luau/Common.h"
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#include "Luau/Frontend.h"
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#include "Luau/ToString.h"
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#include "Luau/TypeInfer.h"
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#include "Luau/Type.h"
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#include "Fixture.h"
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#include "ScopedFlags.h"
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#include "doctest.h"
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#include <algorithm>
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using namespace Luau;
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LUAU_FASTFLAG(LuauSolverV2)
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LUAU_FASTFLAG(LuauInstantiateInSubtyping)
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LUAU_FASTFLAG(LuauFixIndexerSubtypingOrdering)
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LUAU_FASTFLAG(LuauAcceptIndexingTableUnionsIntersections)
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LUAU_DYNAMIC_FASTFLAG(LuauImproveNonFunctionCallError)
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LUAU_DYNAMIC_FASTINT(LuauTypeSolverRelease)
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TEST_SUITE_BEGIN("TableTests");
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TEST_CASE_FIXTURE(BuiltinsFixture, "generalization_shouldnt_seal_table_in_len_function_fn")
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{
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if (!FFlag::LuauSolverV2)
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return;
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CheckResult result = check(R"(
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local t = {}
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for i = #t, 2, -1 do
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t[i] = t[i + 1]
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end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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const TableType* tType = get<TableType>(requireType("t"));
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REQUIRE(tType != nullptr);
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REQUIRE(tType->indexer);
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CHECK_EQ(tType->indexer->indexType, builtinTypes->numberType);
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CHECK_EQ(follow(tType->indexer->indexResultType), builtinTypes->unknownType);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "LUAU_ASSERT_arg_exprs_doesnt_trigger_assert")
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{
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CheckResult result = check(R"(
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local FadeValue = {}
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function FadeValue.new(finalCallback)
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local self = setmetatable({}, FadeValue)
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self.finalCallback = finalCallback
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return self
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end
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function FadeValue:destroy()
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self.finalCallback()
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self.finalCallback = nil
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end
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)");
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}
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TEST_CASE_FIXTURE(Fixture, "basic")
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{
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CheckResult result = check("local t = {foo = \"bar\", baz = 9, quux = nil}");
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LUAU_REQUIRE_NO_ERRORS(result);
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const TableType* tType = get<TableType>(requireType("t"));
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REQUIRE(tType != nullptr);
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std::optional<Property> fooProp = get(tType->props, "foo");
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REQUIRE(bool(fooProp));
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CHECK_EQ(PrimitiveType::String, getPrimitiveType(fooProp->type()));
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std::optional<Property> bazProp = get(tType->props, "baz");
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REQUIRE(bool(bazProp));
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CHECK_EQ(PrimitiveType::Number, getPrimitiveType(bazProp->type()));
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std::optional<Property> quuxProp = get(tType->props, "quux");
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REQUIRE(bool(quuxProp));
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CHECK_EQ(PrimitiveType::NilType, getPrimitiveType(quuxProp->type()));
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}
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TEST_CASE_FIXTURE(Fixture, "augment_table")
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{
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CheckResult result = check(R"(
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local t = {}
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t.foo = 'bar'
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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const TableType* tType = get<TableType>(requireType("t"));
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REQUIRE(tType != nullptr);
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CHECK("{ foo: string }" == toString(requireType("t"), {true}));
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}
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TEST_CASE_FIXTURE(Fixture, "augment_nested_table")
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{
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CheckResult result = check(R"(
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local t = { p = {} }
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t.p.foo = 'bar'
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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TableType* tType = getMutable<TableType>(requireType("t"));
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REQUIRE(tType != nullptr);
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REQUIRE(tType->props.find("p") != tType->props.end());
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const TableType* pType = get<TableType>(tType->props["p"].type());
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REQUIRE(pType != nullptr);
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CHECK("{ p: { foo: string } }" == toString(requireType("t"), {true}));
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}
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TEST_CASE_FIXTURE(Fixture, "assign_key_at_index_expr")
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{
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CheckResult result = check(R"(
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function f(t: {[string]: number})
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t["hello"] = 1
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end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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// We had a bug where we forgot to record the astType of this particular node.
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CHECK("string" == toString(requireTypeAtPosition({2, 19})));
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}
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TEST_CASE_FIXTURE(Fixture, "index_expression_is_checked_against_the_indexer_type")
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{
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CheckResult result = check(R"(
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function f(t: {[boolean]: number})
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t["hello"] = 15
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end
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)");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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if (FFlag::LuauSolverV2)
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CHECK_MESSAGE(get<CannotExtendTable>(result.errors[0]), "Expected CannotExtendTable but got " << toString(result.errors[0]));
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else
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CHECK(get<TypeMismatch>(result.errors[0]));
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}
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TEST_CASE_FIXTURE(Fixture, "cannot_augment_sealed_table")
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{
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CheckResult result = check(R"(
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function mkt()
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return {prop=999}
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end
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local t = mkt()
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t.foo = 'bar'
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)");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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TypeError& err = result.errors[0];
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CHECK(err.location == Location{Position{6, 8}, Position{6, 13}});
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CannotExtendTable* error = get<CannotExtendTable>(err);
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REQUIRE_MESSAGE(error != nullptr, "Expected CannotExtendTable but got: " << toString(err));
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// TODO: better, more robust comparison of type vars
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auto s = toString(error->tableType, ToStringOptions{/*exhaustive*/ true});
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if (FFlag::LuauSolverV2)
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CHECK_EQ(s, "{ prop: number }");
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else
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CHECK_EQ(s, "{| prop: number |}");
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CHECK_EQ(error->prop, "foo");
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CHECK_EQ(error->context, CannotExtendTable::Property);
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}
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TEST_CASE_FIXTURE(Fixture, "dont_seal_an_unsealed_table_by_passing_it_to_a_function_that_takes_a_sealed_table")
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{
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CheckResult result = check(R"(
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type T = {[number]: number}
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function f(arg: T) end
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local B = {}
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f(B)
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function B:method() end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(Fixture, "updating_sealed_table_prop_is_ok")
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{
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CheckResult result = check("local t = {prop=999} t.prop = 0");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(Fixture, "cannot_change_type_of_unsealed_table_prop")
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{
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CheckResult result = check(R"(
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local t = {}
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t.prop = 999
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t.prop = 'hello'
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)");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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}
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TEST_CASE_FIXTURE(Fixture, "cannot_change_type_of_table_prop")
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{
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CheckResult result = check("local t = {prop=999} t.prop = 'hello'");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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}
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TEST_CASE_FIXTURE(Fixture, "report_sensible_error_when_adding_a_value_to_a_nonexistent_prop")
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{
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CheckResult result = check(R"(
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local t = {}
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t.foo[1] = 'one'
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)");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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INFO(result.errors[0]);
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UnknownProperty* err = get<UnknownProperty>(result.errors[0]);
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REQUIRE(err);
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CHECK("t" == toString(err->table));
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CHECK("foo" == err->key);
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}
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TEST_CASE_FIXTURE(Fixture, "function_calls_can_produce_tables")
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{
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CheckResult result = check("function get_table() return {prop=999} end get_table().prop = 0");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(Fixture, "function_calls_produces_sealed_table_given_unsealed_table")
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{
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CheckResult result = check(R"(
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function f() return {} end
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f().foo = 'fail'
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)");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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}
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TEST_CASE_FIXTURE(Fixture, "tc_member_function")
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{
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CheckResult result = check("local T = {} function T:foo() return 5 end");
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LUAU_REQUIRE_NO_ERRORS(result);
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const TableType* tableType = get<TableType>(requireType("T"));
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REQUIRE(tableType != nullptr);
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std::optional<Property> fooProp = get(tableType->props, "foo");
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REQUIRE(bool(fooProp));
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const FunctionType* methodType = get<FunctionType>(follow(fooProp->type()));
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REQUIRE(methodType != nullptr);
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}
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TEST_CASE_FIXTURE(Fixture, "tc_member_function_2")
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{
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CheckResult result = check("local T = {U={}} function T.U:foo() return 5 end");
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LUAU_REQUIRE_NO_ERRORS(result);
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const TableType* tableType = get<TableType>(requireType("T"));
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REQUIRE(tableType != nullptr);
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std::optional<Property> uProp = get(tableType->props, "U");
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REQUIRE(bool(uProp));
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TypeId uType = uProp->type();
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const TableType* uTable = get<TableType>(uType);
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REQUIRE(uTable != nullptr);
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std::optional<Property> fooProp = get(uTable->props, "foo");
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REQUIRE(bool(fooProp));
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const FunctionType* methodType = get<FunctionType>(follow(fooProp->type()));
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REQUIRE(methodType != nullptr);
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std::vector<TypeId> methodArgs = flatten(methodType->argTypes).first;
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REQUIRE_EQ(methodArgs.size(), 1);
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// TODO(rblanckaert): Revist when we can bind self at function creation time
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// REQUIRE_EQ(*methodArgs[0], *uType);
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}
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TEST_CASE_FIXTURE(Fixture, "call_method")
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{
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CheckResult result = check(R"(
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local T = {}
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T.x = 0
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function T:method()
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return self.x
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end
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local a = T:method()
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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CHECK_EQ(*builtinTypes->numberType, *requireType("a"));
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}
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TEST_CASE_FIXTURE(Fixture, "call_method_with_explicit_self_argument")
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{
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CheckResult result = check(R"(
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local T = {}
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T.x = 0
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function T:method()
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return self.x
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end
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local a = T.method(T)
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(Fixture, "used_dot_instead_of_colon")
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{
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// CLI-114792 Dot vs colon warnings aren't in the new solver yet.
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ScopedFastFlag sff{FFlag::LuauSolverV2, false};
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CheckResult result = check(R"(
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local T = {}
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T.x = 0
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function T:method()
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return self.x
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end
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local a = T.method()
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)");
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auto it = std::find_if(
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result.errors.begin(),
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result.errors.end(),
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[](const TypeError& e)
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{
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return nullptr != get<FunctionRequiresSelf>(e);
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}
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);
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REQUIRE(it != result.errors.end());
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "used_colon_correctly")
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{
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CheckResult result = check(R"(
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--!nonstrict
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local upVector = {}
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function upVector:Dot(lookVector)
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return 8
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end
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local v = math.abs(upVector:Dot(5))
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(Fixture, "used_dot_instead_of_colon_but_correctly")
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{
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CheckResult result = check(R"(
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local T = {}
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T.x = 0
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function T:method(arg1, arg2)
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return self.x
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end
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local a = T.method(T, 6, 7)
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(Fixture, "used_colon_instead_of_dot")
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{
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// CLI-114792 Dot vs colon warnings aren't in the new solver yet.
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ScopedFastFlag sff{FFlag::LuauSolverV2, false};
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CheckResult result = check(R"(
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local T = {}
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T.x = 0
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function T.method()
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return 5
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end
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local a = T:method()
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)");
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auto it = std::find_if(
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result.errors.begin(),
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result.errors.end(),
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[](const TypeError& e)
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{
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return nullptr != get<FunctionDoesNotTakeSelf>(e);
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}
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);
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REQUIRE(it != result.errors.end());
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}
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TEST_CASE_FIXTURE(Fixture, "open_table_unification_2")
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{
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// CLI-114792 We don't report MissingProperties in many places where the old solver does.
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ScopedFastFlag sff{FFlag::LuauSolverV2, false};
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CheckResult result = check(R"(
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local a = {}
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a.x = 99
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function a:method()
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return self.y
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end
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a:method()
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)");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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TypeError& err = result.errors[0];
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MissingProperties* error = get<MissingProperties>(err);
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REQUIRE_MESSAGE(error != nullptr, "Expected MissingProperties but got " << toString(err));
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REQUIRE(error->properties.size() == 1);
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CHECK_EQ("y", error->properties[0]);
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// TODO(rblanckaert): Revist when we can bind self at function creation time
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// CHECK_EQ(err.location, Location(Position{5, 19}, Position{5, 25}));
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CHECK_EQ(err.location, Location(Position{7, 8}, Position{7, 9}));
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}
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TEST_CASE_FIXTURE(Fixture, "open_table_unification_3")
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{
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CheckResult result = check(R"(
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function id(x)
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return x
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end
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function foo(o)
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id(o.bar)
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id(o.baz)
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end
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)");
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TypeId fooType = requireType("foo");
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const FunctionType* fooFn = get<FunctionType>(fooType);
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REQUIRE(fooFn != nullptr);
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std::vector<TypeId> fooArgs = flatten(fooFn->argTypes).first;
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REQUIRE_EQ(1, fooArgs.size());
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TypeId arg0 = fooArgs[0];
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const TableType* arg0Table = get<TableType>(follow(arg0));
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REQUIRE(arg0Table != nullptr);
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CHECK(arg0Table->props.count("bar"));
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CHECK(arg0Table->props.count("baz"));
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}
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TEST_CASE_FIXTURE(Fixture, "table_param_width_subtyping_1")
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{
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CheckResult result = check(R"(
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function foo(o)
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local a = o.x
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local b = o.y
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return o
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end
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foo({x=55, y=nil, w=3.14159})
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "table_param_width_subtyping_2")
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{
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CheckResult result = check(R"(
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--!strict
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function foo(o)
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string.lower(o.bar)
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string.lower(o.baz)
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end
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foo({bar='bar'})
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)");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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// CLI 114792 We don't report MissingProperties in many places where the old solver does
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if (FFlag::LuauSolverV2)
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{
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TypeMismatch* error = get<TypeMismatch>(result.errors[0]);
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REQUIRE_MESSAGE(error != nullptr, "Expected TypeMismatch but got " << toString(result.errors[0]));
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CHECK("{ read bar: string }" == toString(error->givenType));
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CHECK("{ read bar: string, read baz: string }" == toString(error->wantedType));
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}
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else
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{
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MissingProperties* error = get<MissingProperties>(result.errors[0]);
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REQUIRE_MESSAGE(error != nullptr, "Expected MissingProperties but got " << toString(result.errors[0]));
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REQUIRE(error->properties.size() == 1);
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CHECK_EQ("baz", error->properties[0]);
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}
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}
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TEST_CASE_FIXTURE(Fixture, "table_param_width_subtyping_3")
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{
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|
CheckResult result = check(R"(
|
|
local T = {}
|
|
T.bar = 'hello'
|
|
function T:method()
|
|
local a = self.baz
|
|
end
|
|
T:method()
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
CHECK(result.errors[0].location == Location{Position{6, 8}, Position{6, 9}});
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK(toString(result.errors[0]) == "Type 'T' could not be converted into '{ read baz: unknown }'");
|
|
else
|
|
{
|
|
TypeError& err = result.errors[0];
|
|
MissingProperties* error = get<MissingProperties>(err);
|
|
REQUIRE_MESSAGE(error != nullptr, "Expected MissingProperties but got " << toString(err));
|
|
REQUIRE(error->properties.size() == 1);
|
|
|
|
CHECK_EQ("baz", error->properties[0]);
|
|
|
|
// TODO(rblanckaert): Revist when we can bind self at function creation time
|
|
/*
|
|
CHECK_EQ(err->location,
|
|
(Location{ Position{4, 22}, Position{4, 30} })
|
|
);
|
|
*/
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "table_unification_4")
|
|
{
|
|
// CLI-114134 - Use egraphs to simplify types better.
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
function foo(o)
|
|
if o.prop then
|
|
return o
|
|
else
|
|
return {prop=false}
|
|
end
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "ok_to_add_property_to_free_table")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function fn(d)
|
|
d:Method()
|
|
d.prop = true
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
dumpErrors(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "okay_to_add_property_to_unsealed_tables_by_assignment")
|
|
{
|
|
// CLI-114872
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
local t = { u = {} }
|
|
t = { u = { p = 37 } }
|
|
t = { u = { q = "hi" } }
|
|
local x = t.u.p
|
|
local y = t.u.q
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
CHECK_EQ("number?", toString(requireType("x")));
|
|
CHECK_EQ("string?", toString(requireType("y")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "okay_to_add_property_to_unsealed_tables_by_function_call")
|
|
{
|
|
// CLI-114873
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
function get(x) return x.opts["MYOPT"] end
|
|
function set(x,y) x.opts["MYOPT"] = y end
|
|
local t = { opts = {} }
|
|
set(t,37)
|
|
local x = get(t)
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
// CHECK_EQ("number?", toString(requireType("x")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "width_subtyping")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
function f(x : { q : number })
|
|
x.q = 8
|
|
end
|
|
local t : { q : number, r : string } = { q = 8, r = "hi" }
|
|
f(t)
|
|
local x : string = t.r
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "width_subtyping_needs_covariance")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
function f(x : { p : { q : number }})
|
|
x.p = { q = 8, r = 5 }
|
|
end
|
|
local t : { p : { q : number, r : string } } = { p = { q = 8, r = "hi" } }
|
|
f(t) -- Shouldn't typecheck
|
|
local x : string = t.p.r -- x is 5
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "infer_array")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {}
|
|
t[1] = 'one'
|
|
t[2] = 'two'
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
const TableType* ttv = get<TableType>(requireType("t"));
|
|
REQUIRE(ttv != nullptr);
|
|
|
|
REQUIRE(bool(ttv->indexer));
|
|
|
|
CHECK_EQ(*ttv->indexer->indexType, *builtinTypes->numberType);
|
|
CHECK_EQ(*ttv->indexer->indexResultType, *builtinTypes->stringType);
|
|
}
|
|
|
|
/* This is a bit weird.
|
|
* The type of buttonVector[i] is initially free, compared to a string with ==
|
|
* We can't actually use this to infer that buttonVector is {string}, and we
|
|
* also have a rule that forbids comparing unknown types with those that may have
|
|
* metatables.
|
|
*
|
|
* Due to a historical quirk, strings are exempt from this rule. Without this exemption,
|
|
* the test code here would fail to typecheck at the use of ==.
|
|
*/
|
|
TEST_CASE_FIXTURE(Fixture, "infer_array_2")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local buttonVector = {}
|
|
|
|
function createButton( actionName, functionInfoTable )
|
|
local position = nil
|
|
for i = 1,#buttonVector do
|
|
if buttonVector[i] == "empty" then
|
|
position = i
|
|
break
|
|
end
|
|
end
|
|
return position
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "indexers_get_quantified_too")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function swap(p)
|
|
local temp = p[0]
|
|
p[0] = p[1]
|
|
p[1] = temp
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK("({unknown}) -> ()" == toString(requireType("swap")));
|
|
else
|
|
{
|
|
const FunctionType* ftv = get<FunctionType>(requireType("swap"));
|
|
REQUIRE(ftv != nullptr);
|
|
|
|
std::vector<TypeId> argVec = flatten(ftv->argTypes).first;
|
|
|
|
REQUIRE_EQ(1, argVec.size());
|
|
|
|
const TableType* ttv = get<TableType>(follow(argVec[0]));
|
|
REQUIRE(ttv != nullptr);
|
|
|
|
REQUIRE(bool(ttv->indexer));
|
|
|
|
const TableIndexer& indexer = *ttv->indexer;
|
|
|
|
REQUIRE("number" == toString(indexer.indexType));
|
|
|
|
TypeId indexResultType = follow(indexer.indexResultType);
|
|
REQUIRE_MESSAGE(get<GenericType>(indexResultType), "Expected generic but got " << toString(indexResultType));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "indexers_quantification_2")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function mergesort(arr)
|
|
local p = arr[0]
|
|
return arr
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
const FunctionType* ftv = get<FunctionType>(requireType("mergesort"));
|
|
REQUIRE(ftv != nullptr);
|
|
|
|
std::vector<TypeId> argVec = flatten(ftv->argTypes).first;
|
|
|
|
REQUIRE_EQ(1, argVec.size());
|
|
|
|
const TableType* argType = get<TableType>(follow(argVec[0]));
|
|
REQUIRE(argType != nullptr);
|
|
|
|
std::vector<TypeId> retVec = flatten(ftv->retTypes).first;
|
|
|
|
const TableType* retType = get<TableType>(follow(retVec[0]));
|
|
REQUIRE(retType != nullptr);
|
|
|
|
CHECK_EQ(argType->state, retType->state);
|
|
|
|
REQUIRE_EQ(*argVec[0], *retVec[0]);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "infer_indexer_from_array_like_table")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {"one", "two", "three"}
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
const TableType* ttv = get<TableType>(requireType("t"));
|
|
REQUIRE(ttv != nullptr);
|
|
|
|
REQUIRE(bool(ttv->indexer));
|
|
const TableIndexer& indexer = *ttv->indexer;
|
|
|
|
CHECK_EQ(*builtinTypes->numberType, *indexer.indexType);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
// CLI-114134 - Use egraphs to simplify types
|
|
CHECK("string | string | string" == toString(indexer.indexResultType));
|
|
}
|
|
else
|
|
CHECK_EQ(*builtinTypes->stringType, *indexer.indexResultType);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "infer_indexer_from_value_property_in_literal")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function Symbol(n)
|
|
return { __name=n }
|
|
end
|
|
|
|
function f()
|
|
return {
|
|
[Symbol("hello")] = true,
|
|
x = 0,
|
|
y = 0
|
|
}
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
const FunctionType* fType = get<FunctionType>(requireType("f"));
|
|
REQUIRE(fType != nullptr);
|
|
|
|
auto retType_ = first(fType->retTypes);
|
|
REQUIRE(bool(retType_));
|
|
|
|
auto retType = get<TableType>(follow(*retType_));
|
|
REQUIRE(retType != nullptr);
|
|
|
|
CHECK(bool(retType->indexer));
|
|
|
|
const TableIndexer& indexer = *retType->indexer;
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK_EQ("{ __name: string }", toString(indexer.indexType));
|
|
else
|
|
CHECK_EQ("{| __name: string |}", toString(indexer.indexType));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "infer_indexer_from_its_variable_type_and_unifiable")
|
|
{
|
|
// This code is totally different in the new solver. We instead create a new type state for t2.
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
local t1: { [string]: string } = {}
|
|
local t2 = { "bar" }
|
|
|
|
t2 = t1
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
TypeMismatch* tm = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE(tm != nullptr);
|
|
|
|
TypeId t2Ty = requireType("t2");
|
|
const TableType* tTy = get<TableType>(t2Ty);
|
|
REQUIRE_MESSAGE(tTy != nullptr, "Expected a table but got " << toString(t2Ty));
|
|
|
|
REQUIRE(tTy->indexer);
|
|
CHECK_EQ(*builtinTypes->numberType, *tTy->indexer->indexType);
|
|
CHECK_EQ(*builtinTypes->stringType, *tTy->indexer->indexResultType);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "indexer_mismatch")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t1: { [string]: string } = {}
|
|
local t2: { [number]: number } = {}
|
|
|
|
t2 = t1
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
TypeId t1 = requireType("t1");
|
|
TypeId t2 = requireType("t2");
|
|
|
|
TypeMismatch* tm = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE(tm != nullptr);
|
|
CHECK(toString(tm->wantedType) == "{number}");
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK(toString(tm->givenType) == "{ [string]: string }");
|
|
else
|
|
CHECK(toString(tm->givenType) == "{| [string]: string |}");
|
|
|
|
CHECK_NE(*t1, *t2);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "infer_indexer_from_its_function_return_type")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function f(): { [number]: string }
|
|
return {}
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "infer_indexer_for_left_unsealed_table_from_right_hand_table_with_indexer")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function f(): { [number]: string } return {} end
|
|
|
|
local t = {}
|
|
t = f()
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "sealed_table_value_can_infer_an_indexer")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t: { a: string, [number]: string } = { a = "foo" }
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "array_factory_function")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
function empty() return {} end
|
|
local array: {string} = empty()
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "sealed_table_indexers_must_unify")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function f(a: {number}): {string}
|
|
return a
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
// CLI-114879 - Error path reporting is not great
|
|
CHECK(
|
|
toString(result.errors[0]) ==
|
|
"Type pack '{number}' could not be converted into '{string}'; at [0].indexResult(), number is not exactly string"
|
|
);
|
|
}
|
|
else
|
|
CHECK_MESSAGE(nullptr != get<TypeMismatch>(result.errors[0]), "Expected a TypeMismatch but got " << result.errors[0]);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "indexer_on_sealed_table_must_unify_with_free_table")
|
|
{
|
|
// CLI-114134 What should be happening here is that the type of `t` should
|
|
// be reduced from `{number} & {string}` to `never`, but that's not
|
|
// happening.
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
function F(t): {number}
|
|
t[4] = "hi"
|
|
return t
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "infer_type_when_indexing_from_a_table_indexer")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function f(t: {string})
|
|
return t[1]
|
|
end
|
|
|
|
local s = f({})
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ(*builtinTypes->stringType, *requireType("s"));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "indexing_from_a_table_should_prefer_properties_when_possible")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function f(): { a: string, [string]: number }
|
|
error("e")
|
|
end
|
|
|
|
local t = f()
|
|
|
|
local a1 = t.a
|
|
local a2 = t["a"]
|
|
|
|
local b1 = t.b
|
|
local b2 = t["b"]
|
|
|
|
local some_indirection_variable = "foo"
|
|
local c = t[some_indirection_variable]
|
|
|
|
local d = t[1]
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
CHECK_EQ(*builtinTypes->stringType, *requireType("a1"));
|
|
CHECK_EQ(*builtinTypes->stringType, *requireType("a2"));
|
|
|
|
CHECK_EQ(*builtinTypes->numberType, *requireType("b1"));
|
|
CHECK_EQ(*builtinTypes->numberType, *requireType("b2"));
|
|
|
|
CHECK_EQ(*builtinTypes->numberType, *requireType("c"));
|
|
|
|
CHECK_MESSAGE(nullptr != get<TypeMismatch>(result.errors[0]), "Expected a TypeMismatch but got " << result.errors[0]);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "any_when_indexing_into_an_unsealed_table_with_no_indexer_in_nonstrict_mode")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
--!nonstrict
|
|
|
|
local constants = {
|
|
key1 = "value1",
|
|
key2 = "value2"
|
|
}
|
|
|
|
local function getKey()
|
|
return "key1"
|
|
end
|
|
|
|
local k1 = constants[getKey()]
|
|
)");
|
|
|
|
CHECK("any" == toString(requireType("k1")));
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "disallow_indexing_into_an_unsealed_table_with_no_indexer_in_strict_mode")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local constants = {
|
|
key1 = "value1",
|
|
key2 = "value2"
|
|
}
|
|
|
|
function getConstant(key)
|
|
return constants[key]
|
|
end
|
|
|
|
local k1 = getConstant("key1")
|
|
)");
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK("unknown" == toString(requireType("k1")));
|
|
else
|
|
CHECK("any" == toString(requireType("k1")));
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "assigning_to_an_unsealed_table_with_string_literal_should_infer_new_properties_over_indexer")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {}
|
|
t["a"] = "foo"
|
|
|
|
local a = t.a
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK("string" == toString(*builtinTypes->stringType));
|
|
|
|
TypeId tType = requireType("t");
|
|
TableType* tableType = getMutable<TableType>(tType);
|
|
REQUIRE_MESSAGE(tableType != nullptr, "Expected a table but got " << toString(tType, {true}));
|
|
REQUIRE(tableType->indexer == std::nullopt);
|
|
REQUIRE(0 != tableType->props.count("a"));
|
|
|
|
TypeId propertyA = tableType->props["a"].type();
|
|
REQUIRE(propertyA != nullptr);
|
|
CHECK_EQ(*builtinTypes->stringType, *propertyA);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "oop_indexer_works")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local clazz = {}
|
|
clazz.__index = clazz
|
|
|
|
function clazz:speak()
|
|
return "hi"
|
|
end
|
|
|
|
function clazz.new()
|
|
return setmetatable({}, clazz)
|
|
end
|
|
|
|
local me = clazz.new()
|
|
local words = me:speak()
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ(*builtinTypes->stringType, *requireType("words"));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "indexer_table")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local clazz = {a="hello"}
|
|
local instanace = setmetatable({}, {__index=clazz})
|
|
local b = instanace.a
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ(*builtinTypes->stringType, *requireType("b"));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "indexer_fn")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local instanace = setmetatable({}, {__index=function() return 10 end})
|
|
local b = instanace.somemethodwedonthave
|
|
)");
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ(*builtinTypes->numberType, *requireType("b"));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "meta_add")
|
|
{
|
|
// Note: meta_add_inferred and this unit test are currently the same exact thing.
|
|
// We'll want to change this one in particular when we add real syntax for metatables.
|
|
|
|
CheckResult result = check(R"(
|
|
local mt = {
|
|
__add = function(l, r)
|
|
return l
|
|
end
|
|
}
|
|
local a = setmetatable({}, mt)
|
|
local b = setmetatable({}, mt)
|
|
local c = a + b
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ(follow(requireType("a")), follow(requireType("c")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "meta_add_inferred")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a = {}
|
|
setmetatable(a, {__add=function(a,b) return b end} )
|
|
local c = a + a
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ(*requireType("a"), *requireType("c"));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "meta_add_both_ways")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
type VectorMt = { __add: (Vector, number) -> Vector }
|
|
local vectorMt: VectorMt
|
|
type Vector = typeof(setmetatable({}, vectorMt))
|
|
local a: Vector
|
|
|
|
local b = a + 2
|
|
local c = 2 + a
|
|
)");
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ("Vector", toString(requireType("a")));
|
|
CHECK_EQ(*requireType("a"), *requireType("b"));
|
|
CHECK_EQ(*requireType("a"), *requireType("c"));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "meta_add_both_ways_lti")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
local vectorMt = {}
|
|
|
|
function vectorMt.__add(self: Vector, other: number)
|
|
return self
|
|
end
|
|
|
|
type Vector = typeof(setmetatable({}, vectorMt))
|
|
local a: Vector = setmetatable({}, vectorMt)
|
|
|
|
local b = a + 2
|
|
local c = 2 + a
|
|
)");
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ("Vector", toString(requireType("a")));
|
|
CHECK_EQ(*requireType("a"), *requireType("b"));
|
|
CHECK_EQ(*requireType("a"), *requireType("c"));
|
|
}
|
|
|
|
// This test exposed a bug where we let go of the "seen" stack while unifying table types
|
|
// As a result, type inference crashed with a stack overflow.
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "unification_of_unions_in_a_self_referential_type")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type A = {}
|
|
type AMT = { __mul: (A, A | number) -> A }
|
|
local a: A
|
|
local amt: AMT
|
|
setmetatable(a, amt)
|
|
|
|
type B = {}
|
|
type BMT = { __mul: (B, A | B | number) -> A }
|
|
local b: B
|
|
local bmt: BMT
|
|
setmetatable(b, bmt)
|
|
|
|
a = b
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
const MetatableType* amtv = get<MetatableType>(requireType("a"));
|
|
REQUIRE(amtv);
|
|
CHECK_EQ(follow(amtv->metatable), follow(requireType("amt")));
|
|
|
|
const MetatableType* bmtv = get<MetatableType>(requireType("b"));
|
|
REQUIRE(bmtv);
|
|
CHECK_EQ(follow(bmtv->metatable), follow(requireType("bmt")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "oop_polymorphic")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local animal = {}
|
|
animal.__index = animal
|
|
function animal:isAlive() return true end
|
|
function animal:speed() return 10 end
|
|
|
|
local pelican = {}
|
|
setmetatable(pelican, animal)
|
|
pelican.__index = pelican
|
|
function pelican:movement() return "fly" end
|
|
function pelican:speed() return 30 end
|
|
|
|
function pelican.new(name)
|
|
local s = {}
|
|
setmetatable(s, pelican)
|
|
s.name = name
|
|
return s
|
|
end
|
|
|
|
local scoops = pelican.new("scoops")
|
|
|
|
local alive = scoops:isAlive()
|
|
local at = scoops.isAlive
|
|
local movement = scoops:movement()
|
|
local name = scoops.name
|
|
local speed = scoops:speed()
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ(*builtinTypes->booleanType, *requireType("alive"));
|
|
CHECK_EQ(*builtinTypes->stringType, *requireType("movement"));
|
|
CHECK_EQ(*builtinTypes->stringType, *requireType("name"));
|
|
CHECK_EQ(*builtinTypes->numberType, *requireType("speed"));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "user_defined_table_types_are_named")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type Vector3 = {x: number, y: number}
|
|
|
|
local v: Vector3 = {x = 5, y = 7}
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ("Vector3", toString(requireType("v")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "result_is_always_any_if_lhs_is_any")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type Vector3MT = {
|
|
__add: (Vector3MT, Vector3MT) -> Vector3MT,
|
|
__mul: (Vector3MT, Vector3MT|number) -> Vector3MT
|
|
}
|
|
|
|
local Vector3: {new: (number?, number?, number?) -> Vector3MT}
|
|
local Vector3MT: Vector3MT
|
|
setmetatable(Vector3, Vector3MT)
|
|
|
|
type CFrameMT = {
|
|
__mul: (CFrameMT, Vector3MT|CFrameMT) -> Vector3MT|CFrameMT
|
|
}
|
|
|
|
local CFrame: {
|
|
Angles:(number, number, number) -> CFrameMT
|
|
}
|
|
local CFrameMT: CFrameMT
|
|
setmetatable(CFrame, CFrameMT)
|
|
|
|
local n: any
|
|
local a = (n + Vector3.new(0, 1.5, 0)) * CFrame.Angles(0, math.pi/2, 0)
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ("any", toString(requireType("a")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "result_is_bool_for_equality_operators_if_lhs_is_any")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function f(): (any, number)
|
|
return 5, 7
|
|
end
|
|
|
|
local a: any, b: number = f()
|
|
|
|
local c = a < b
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ("boolean", toString(requireType("c")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "inequality_operators_imply_exactly_matching_types")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function abs(n)
|
|
if n < 0 then
|
|
return -n
|
|
else
|
|
return n
|
|
end
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
CHECK_EQ("(number) -> number", toString(requireType("abs")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "nice_error_when_trying_to_fetch_property_of_boolean")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a = true
|
|
local b = a.some_prop
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
CHECK_EQ("Type 'boolean' does not have key 'some_prop'", toString(result.errors[0]));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "defining_a_method_for_a_builtin_sealed_table_must_fail")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function string.m() end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "defining_a_self_method_for_a_builtin_sealed_table_must_fail")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function string:m() end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "defining_a_method_for_a_local_sealed_table_must_fail")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function mkt() return {x = 1} end
|
|
local t = mkt()
|
|
function t.m() end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "defining_a_self_method_for_a_local_sealed_table_must_fail")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function mkt() return {x = 1} end
|
|
local t = mkt()
|
|
function t:m() end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "defining_a_method_for_a_local_unsealed_table_is_ok")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {x = 1}
|
|
function t.m() end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "defining_a_self_method_for_a_local_unsealed_table_is_ok")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {x = 1}
|
|
function t:m() end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
// This unit test could be flaky if the fix has regressed.
|
|
TEST_CASE_FIXTURE(Fixture, "pass_incompatible_union_to_a_generic_table_without_crashing")
|
|
{
|
|
CheckResult result = check(R"(
|
|
-- must be in this specific order, and with (roughly) those exact properties!
|
|
type A = {x: number, [any]: any} | {}
|
|
|
|
function f(t)
|
|
t.y = 1
|
|
end
|
|
|
|
function g(a: A)
|
|
f(a)
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK(get<TypeMismatch>(result.errors[0]));
|
|
}
|
|
|
|
// This unit test could be flaky if the fix has regressed.
|
|
TEST_CASE_FIXTURE(Fixture, "passing_compatible_unions_to_a_generic_table_without_crashing")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type A = {x: number, y: number, [any]: any} | {y: number}
|
|
|
|
function f(t)
|
|
t.y = 1
|
|
end
|
|
|
|
function g(a: A)
|
|
f(a)
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "found_like_key_in_table_function_call")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {}
|
|
function t.Foo() end
|
|
|
|
t.fOo()
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
TypeError te = result.errors[0];
|
|
UnknownPropButFoundLikeProp* error = get<UnknownPropButFoundLikeProp>(te);
|
|
REQUIRE(error);
|
|
|
|
TypeId t = requireType("t");
|
|
CHECK_EQ(*t, *error->table);
|
|
CHECK_EQ("fOo", error->key);
|
|
|
|
auto candidates = error->candidates;
|
|
CHECK_EQ(1, candidates.size());
|
|
CHECK(candidates.find("Foo") != candidates.end());
|
|
|
|
CHECK_EQ(toString(te), "Key 'fOo' not found in table 't'. Did you mean 'Foo'?");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "found_like_key_in_table_property_access")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {X = 1}
|
|
|
|
print(t.x)
|
|
)");
|
|
|
|
REQUIRE_EQ(result.errors.size(), 1);
|
|
|
|
TypeError te = result.errors[0];
|
|
UnknownPropButFoundLikeProp* error = get<UnknownPropButFoundLikeProp>(te);
|
|
REQUIRE(error);
|
|
|
|
TypeId t = requireType("t");
|
|
CHECK_EQ(*t, *error->table);
|
|
CHECK_EQ("x", error->key);
|
|
|
|
auto candidates = error->candidates;
|
|
CHECK_EQ(1, candidates.size());
|
|
CHECK(candidates.find("X") != candidates.end());
|
|
|
|
CHECK_EQ(toString(te), "Key 'x' not found in table 't'. Did you mean 'X'?");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "found_multiple_like_keys")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {Foo = 1, foO = 2}
|
|
|
|
print(t.foo)
|
|
)");
|
|
|
|
REQUIRE_EQ(result.errors.size(), 1);
|
|
|
|
TypeError te = result.errors[0];
|
|
UnknownPropButFoundLikeProp* error = get<UnknownPropButFoundLikeProp>(te);
|
|
REQUIRE(error);
|
|
|
|
TypeId t = requireType("t");
|
|
CHECK_EQ(*t, *error->table);
|
|
CHECK_EQ("foo", error->key);
|
|
|
|
auto candidates = error->candidates;
|
|
CHECK_EQ(2, candidates.size());
|
|
CHECK(candidates.find("Foo") != candidates.end());
|
|
CHECK(candidates.find("foO") != candidates.end());
|
|
|
|
CHECK_EQ(toString(te), "Key 'foo' not found in table 't'. Did you mean one of 'Foo', 'foO'?");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "dont_suggest_exact_match_keys")
|
|
{
|
|
// CLI-114977 Unsealed table writes don't account for order properly
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
local t = {}
|
|
t.foO = 1
|
|
print(t.Foo)
|
|
t.Foo = 2
|
|
)");
|
|
|
|
REQUIRE_EQ(result.errors.size(), 1);
|
|
|
|
TypeError te = result.errors[0];
|
|
UnknownPropButFoundLikeProp* error = get<UnknownPropButFoundLikeProp>(te);
|
|
REQUIRE(error);
|
|
|
|
TypeId t = requireType("t");
|
|
CHECK_EQ(*t, *error->table);
|
|
CHECK_EQ("Foo", error->key);
|
|
|
|
auto candidates = error->candidates;
|
|
CHECK_EQ(1, candidates.size());
|
|
CHECK(candidates.find("foO") != candidates.end());
|
|
CHECK(candidates.find("Foo") == candidates.end());
|
|
|
|
CHECK_EQ(toString(te), "Key 'Foo' not found in table 't'. Did you mean 'foO'?");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "getmetatable_returns_pointer_to_metatable")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {x = 1}
|
|
local mt = {__index = {y = 2}}
|
|
setmetatable(t, mt)
|
|
|
|
local returnedMT = getmetatable(t)
|
|
)");
|
|
|
|
CHECK_EQ(*requireType("mt"), *requireType("returnedMT"));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "metatable_mismatch_should_fail")
|
|
{
|
|
// This test is invalid because we now create a new type state for t1 at the assignment.
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
local t1 = {x = 1}
|
|
local mt1 = {__index = {y = 2}}
|
|
setmetatable(t1, mt1)
|
|
|
|
local t2 = {x = 1}
|
|
local mt2 = {__index = function() return nil end}
|
|
setmetatable(t2, mt2)
|
|
|
|
t1 = t2
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
TypeMismatch* tm = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE(tm);
|
|
CHECK_EQ(*tm->wantedType, *requireType("t1"));
|
|
CHECK_EQ(*tm->givenType, *requireType("t2"));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "property_lookup_through_tabletypevar_metatable")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {x = 1}
|
|
local mt = {__index = {y = 2}}
|
|
setmetatable(t, mt)
|
|
|
|
print(t.x)
|
|
print(t.y)
|
|
print(t.z)
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
UnknownProperty* up = get<UnknownProperty>(result.errors[0]);
|
|
REQUIRE_MESSAGE(up, result.errors[0].data);
|
|
CHECK_EQ(up->key, "z");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "missing_metatable_for_sealed_tables_do_not_get_inferred")
|
|
{
|
|
// This test is invalid because we now create a new type state for t at the assignment.
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
local t = {x = 1}
|
|
|
|
local a = {x = 1}
|
|
local b = {__index = {y = 2}}
|
|
setmetatable(a, b)
|
|
|
|
t = a
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
TypeId a = requireType("a");
|
|
TypeId t = requireType("t");
|
|
CHECK_NE(*a, *t);
|
|
|
|
TypeError te = result.errors[0];
|
|
TypeMismatch* tm = get<TypeMismatch>(te);
|
|
REQUIRE(tm);
|
|
CHECK_EQ(tm->wantedType, t);
|
|
CHECK_EQ(tm->givenType, a);
|
|
|
|
const MetatableType* aTy = get<MetatableType>(a);
|
|
REQUIRE(aTy);
|
|
|
|
const TableType* tTy = get<TableType>(t);
|
|
REQUIRE(tTy);
|
|
}
|
|
|
|
// Could be flaky if the fix has regressed.
|
|
TEST_CASE_FIXTURE(Fixture, "right_table_missing_key")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function _(...)
|
|
end
|
|
local l7 = not _,function(l0)
|
|
_ += _((_) or {function(...)
|
|
end,["z"]=_,} or {},(function(l43,...)
|
|
end))
|
|
_ += 0 < {}
|
|
end
|
|
repeat
|
|
until _
|
|
local l0 = n4,_((_) or {} or {[30976]=_,},({}))
|
|
)");
|
|
|
|
CHECK_GE(result.errors.size(), 0);
|
|
}
|
|
|
|
// Could be flaky if the fix has regressed.
|
|
TEST_CASE_FIXTURE(Fixture, "right_table_missing_key2")
|
|
{
|
|
// CLI-114792 We don't report MissingProperties
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
function f(t: {}): { [string]: string, a: string }
|
|
return t
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
MissingProperties* mp = get<MissingProperties>(result.errors[0]);
|
|
REQUIRE_MESSAGE(mp, "Expected MissingProperties but got " << toString(result.errors[0]));
|
|
CHECK_EQ(mp->context, MissingProperties::Missing);
|
|
REQUIRE_EQ(1, mp->properties.size());
|
|
CHECK_EQ(mp->properties[0], "a");
|
|
|
|
CHECK_EQ("{| [string]: string, a: string |}", toString(mp->superType));
|
|
CHECK_EQ("{| |}", toString(mp->subType));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "casting_unsealed_tables_with_props_into_table_with_indexer")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type StringToStringMap = { [string]: string }
|
|
local rt: StringToStringMap = { ["foo"] = 1 }
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
ToStringOptions o{/* exhaustive= */ true};
|
|
TypeMismatch* tm = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE(tm);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CHECK_EQ("{ [string]: string }", toString(tm->wantedType, o));
|
|
CHECK_EQ("{ [string]: number }", toString(tm->givenType, o));
|
|
}
|
|
else
|
|
{
|
|
CHECK_EQ("{| [string]: string |}", toString(tm->wantedType, o));
|
|
|
|
// Should t now have an indexer?
|
|
// It would if the assignment to rt was correctly typed.
|
|
CHECK_EQ("{ [string]: string, foo: number }", toString(tm->givenType, o));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "casting_sealed_tables_with_props_into_table_with_indexer")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type StringToStringMap = { [string]: string }
|
|
function mkrt() return { ["foo"] = 1 } end
|
|
local rt: StringToStringMap = mkrt()
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
ToStringOptions o{/* exhaustive= */ true};
|
|
TypeMismatch* tm = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE(tm);
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CHECK_EQ("{ [string]: string }", toString(tm->wantedType, o));
|
|
CHECK_EQ("{ foo: number }", toString(tm->givenType, o));
|
|
}
|
|
else
|
|
{
|
|
CHECK_EQ("{| [string]: string |}", toString(tm->wantedType, o));
|
|
CHECK_EQ("{| foo: number |}", toString(tm->givenType, o));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "casting_tables_with_props_into_table_with_indexer2")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function foo(x: {[string]: number, a: string}) end
|
|
foo({ a = "" })
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "casting_tables_with_props_into_table_with_indexer3")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function foo(a: {[string]: number, a: string}) end
|
|
foo({ a = 1 })
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
ToStringOptions o{/* exhaustive= */ true};
|
|
TypeMismatch* tm = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE(tm);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CHECK("string" == toString(tm->wantedType));
|
|
CHECK("number" == toString(tm->givenType));
|
|
}
|
|
else
|
|
{
|
|
CHECK_EQ("{| [string]: number, a: string |}", toString(tm->wantedType, o));
|
|
CHECK_EQ("{ [string]: number, a: number }", toString(tm->givenType, o));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "casting_tables_with_props_into_table_with_indexer4")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function foo(a: {[string]: number, a: string}, i: string)
|
|
return a[i]
|
|
end
|
|
local hi: number = foo({ a = "hi" }, "a") -- shouldn't typecheck since at runtime hi is "hi"
|
|
)");
|
|
|
|
// This typechecks but shouldn't
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "table_subtyping_with_missing_props_dont_report_multiple_errors")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function f(vec1: {x: number}): {x: number, y: number, z: number}
|
|
return vec1
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CHECK_EQ(
|
|
"Type pack '{ x: number }' could not be converted into '{ x: number, y: number, z: number }';"
|
|
" at [0], { x: number } is not a subtype of { x: number, y: number, z: number }",
|
|
toString(result.errors[0])
|
|
);
|
|
}
|
|
else
|
|
{
|
|
MissingProperties* mp = get<MissingProperties>(result.errors[0]);
|
|
REQUIRE_MESSAGE(mp, result.errors[0]);
|
|
CHECK_EQ(mp->context, MissingProperties::Missing);
|
|
REQUIRE_EQ(2, mp->properties.size());
|
|
CHECK_EQ(mp->properties[0], "y");
|
|
CHECK_EQ(mp->properties[1], "z");
|
|
|
|
CHECK_EQ("{| x: number, y: number, z: number |}", toString(mp->superType));
|
|
CHECK_EQ("{| x: number |}", toString(mp->subType));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "table_subtyping_with_missing_props_dont_report_multiple_errors2")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type MixedTable = {[number]: number, x: number}
|
|
local t: MixedTable = {"fail"}
|
|
)");
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
TypeMismatch* tm = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE(tm);
|
|
|
|
CHECK("MixedTable" == toString(tm->wantedType));
|
|
CHECK("{string}" == toString(tm->givenType));
|
|
}
|
|
else
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(2, result);
|
|
|
|
MissingProperties* mp = get<MissingProperties>(result.errors[1]);
|
|
REQUIRE(mp);
|
|
CHECK_EQ(mp->context, MissingProperties::Missing);
|
|
REQUIRE_EQ(1, mp->properties.size());
|
|
CHECK_EQ(mp->properties[0], "x");
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "table_subtyping_with_extra_props_dont_report_multiple_errors")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function mkvec3() return {x = 1, y = 2, z = 3} end
|
|
function mkvec1() return {x = 1} end
|
|
|
|
local vec3: {{x: number, y: number, z: number}} = {mkvec3()}
|
|
local vec1: {{x: number}} = {mkvec1()}
|
|
|
|
vec1 = vec3
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
TypeMismatch* tm = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE(tm);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CHECK_EQ("{{ x: number }}", toString(tm->wantedType));
|
|
CHECK_EQ("{{ x: number, y: number, z: number }}", toString(tm->givenType));
|
|
}
|
|
else
|
|
{
|
|
CHECK_EQ("{{| x: number |}}", toString(tm->wantedType));
|
|
CHECK_EQ("{{| x: number, y: number, z: number |}}", toString(tm->givenType));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "table_subtyping_with_extra_props_is_ok")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local vec3 = {x = 1, y = 2, z = 3}
|
|
local vec1 = {x = 1}
|
|
|
|
vec1 = vec3
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "type_mismatch_on_massive_table_is_cut_short")
|
|
{
|
|
ScopedFastInt sfis{FInt::LuauTableTypeMaximumStringifierLength, 40};
|
|
|
|
CheckResult result = check(R"(
|
|
local t: {a: number,b: number, c: number, d: number, e: number, f: number} = nil :: any
|
|
t = 1
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
TypeMismatch* tm = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE(tm);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CHECK("{ a: number, b: number, c: number, d: number, e: number, ... 1 more ... }" == toString(requireType("t")));
|
|
CHECK_EQ("number", toString(tm->givenType));
|
|
|
|
CHECK_EQ(
|
|
"Type 'number' could not be converted into '{ a: number, b: number, c: number, d: number, e: number, ... 1 more ... }'",
|
|
toString(result.errors[0])
|
|
);
|
|
}
|
|
else
|
|
{
|
|
CHECK("{| a: number, b: number, c: number, d: number, e: number, ... 1 more ... |}" == toString(requireType("t")));
|
|
CHECK_EQ("number", toString(tm->givenType));
|
|
|
|
CHECK_EQ(
|
|
"Type 'number' could not be converted into '{| a: number, b: number, c: number, d: number, e: number, ... 1 more ... |}'",
|
|
toString(result.errors[0])
|
|
);
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "ok_to_set_nil_even_on_non_lvalue_base_expr")
|
|
{
|
|
// CLI-100076 Assigning nil to an indexer should always succeed
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
local function f(): { [string]: number }
|
|
return { ["foo"] = 1 }
|
|
end
|
|
|
|
f()["foo"] = nil
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "ok_to_provide_a_subtype_during_construction")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a: string | number = 1
|
|
local t = {a, 1}
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
// CLI-114134 Use egraphs to simplify types more consistently
|
|
CHECK("{number | number | string}" == toString(requireType("t"), {/*exhaustive*/ true}));
|
|
}
|
|
else
|
|
CHECK_EQ("{number | string}", toString(requireType("t"), {/*exhaustive*/ true}));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "reasonable_error_when_adding_a_nonexistent_property_to_an_array_like_table")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
function mkA() return {"value"} end
|
|
local A = mkA()
|
|
A.B = "Hello"
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CannotExtendTable* cet = get<CannotExtendTable>(result.errors[0]);
|
|
REQUIRE_MESSAGE(cet, "Expected CannotExtendTable but got " << result.errors[0]);
|
|
|
|
CHECK("B" == cet->prop);
|
|
}
|
|
else
|
|
{
|
|
UnknownProperty* up = get<UnknownProperty>(result.errors[0]);
|
|
REQUIRE_MESSAGE(up != nullptr, "Expected an UnknownProperty but got " << result.errors[0]);
|
|
|
|
CHECK_EQ("B", up->key);
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "shorter_array_types_actually_work")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
local A: {string | number}
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(0, result);
|
|
CHECK_EQ("{number | string}", toString(requireType("A")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "only_ascribe_synthetic_names_at_module_scope")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
local TopLevel = {}
|
|
local foo
|
|
|
|
for i = 1, 10 do
|
|
local SubScope = { 1, 2, 3 }
|
|
foo = SubScope
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(0, result);
|
|
|
|
CHECK_EQ("TopLevel", toString(requireType("TopLevel")));
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK_EQ("{number}?", toString(requireType("foo")));
|
|
else
|
|
CHECK_EQ("{number}", toString(requireType("foo")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "hide_table_error_properties")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
|
|
local function f()
|
|
local function mkt() return { x = 1 } end
|
|
local t = mkt()
|
|
|
|
function t.a() end
|
|
function t.b() end
|
|
|
|
return t
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(2, result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CHECK_EQ("Cannot add property 'a' to table '{ x: number }'", toString(result.errors[0]));
|
|
CHECK_EQ("Cannot add property 'b' to table '{ x: number }'", toString(result.errors[1]));
|
|
}
|
|
else
|
|
{
|
|
CHECK_EQ("Cannot add property 'a' to table '{| x: number |}'", toString(result.errors[0]));
|
|
CHECK_EQ("Cannot add property 'b' to table '{| x: number |}'", toString(result.errors[1]));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "builtin_table_names")
|
|
{
|
|
CheckResult result = check(R"(
|
|
os.h = 2
|
|
string.k = 3
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(2, result);
|
|
|
|
CHECK_EQ("Cannot add property 'h' to table 'typeof(os)'", toString(result.errors[0]));
|
|
CHECK_EQ("Cannot add property 'k' to table 'typeof(string)'", toString(result.errors[1]));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "persistent_sealed_table_is_immutable")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function os:bad() end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK_EQ("Cannot add property 'bad' to table 'typeof(os)'", toString(result.errors[0]));
|
|
|
|
const TableType* osType = get<TableType>(requireType("os"));
|
|
REQUIRE(osType != nullptr);
|
|
CHECK(osType->props.find("bad") == osType->props.end());
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "common_table_element_list")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type Table = {
|
|
a: number,
|
|
b: number?
|
|
}
|
|
|
|
local Test: {Table} = {
|
|
{ a = 1 },
|
|
{ a = 2, b = 3 }
|
|
}
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "common_table_element_general")
|
|
{
|
|
// CLI-115275 - Bidirectional inference does not always propagate indexer types into the expression
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
type Table = {
|
|
a: number,
|
|
b: number?
|
|
}
|
|
|
|
local Test: {Table} = {
|
|
[2] = { a = 1 },
|
|
[5] = { a = 2, b = 3 }
|
|
}
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "common_table_element_inner_index")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type Table = {
|
|
a: number,
|
|
b: number?
|
|
}
|
|
|
|
local Test: {{Table}} = {{
|
|
{ a = 1 },
|
|
{ a = 2, b = 3 }
|
|
},{
|
|
{ a = 3 },
|
|
{ a = 4, b = 3 }
|
|
}}
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "common_table_element_inner_prop")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type Table = {
|
|
a: number,
|
|
b: number?
|
|
}
|
|
|
|
local Test: {{x: Table, y: Table}} = {{
|
|
x = { a = 1 },
|
|
y = { a = 2, b = 3 }
|
|
},{
|
|
x = { a = 3 },
|
|
y = { a = 4 }
|
|
}}
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "common_table_element_union_assignment")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type Foo = {x: number | string}
|
|
|
|
local foos: {Foo} = {
|
|
{x = 1234567},
|
|
{x = "hello"},
|
|
}
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "quantifying_a_bound_var_works")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local clazz = {}
|
|
clazz.__index = clazz
|
|
|
|
function clazz:speak()
|
|
return "hi"
|
|
end
|
|
|
|
function clazz.new()
|
|
return setmetatable({}, clazz)
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
TypeId ty = requireType("clazz");
|
|
TableType* ttv = getMutable<TableType>(ty);
|
|
REQUIRE_MESSAGE(ttv, "Expected a table but got " << toString(ty, {true}));
|
|
REQUIRE(ttv->props.count("new"));
|
|
Property& prop = ttv->props["new"];
|
|
REQUIRE(prop.type());
|
|
const FunctionType* ftv = get<FunctionType>(follow(prop.type()));
|
|
REQUIRE(ftv);
|
|
const TypePack* res = get<TypePack>(follow(ftv->retTypes));
|
|
REQUIRE(res);
|
|
REQUIRE(res->head.size() == 1);
|
|
const MetatableType* mtv = get<MetatableType>(follow(res->head[0]));
|
|
REQUIRE(mtv);
|
|
ttv = getMutable<TableType>(follow(mtv->table));
|
|
REQUIRE(ttv);
|
|
REQUIRE_EQ(ttv->state, TableState::Sealed);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "common_table_element_union_in_call")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function foo(l: {{x: number | string}}) end
|
|
|
|
foo({
|
|
{x = 1234567},
|
|
{x = "hello"},
|
|
})
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "common_table_element_union_in_call_tail")
|
|
{
|
|
// CLI-115239 - Bidirectional checking does not work for __call metamethods
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
type Foo = {x: number | string}
|
|
local function foo(l: {Foo}, ...: {Foo}) end
|
|
|
|
foo(
|
|
{{x = 1234567}, {x = "hello"}},
|
|
{{x = 1234567}, {x = "hello"}},
|
|
{{x = 1234567}, {x = "hello"}}
|
|
)
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "common_table_element_union_in_prop")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type Foo = {x: number | string}
|
|
local t: { a: {Foo}, b: number } = {
|
|
a = {
|
|
{x = 1234567},
|
|
{x = "hello"},
|
|
},
|
|
b = 5
|
|
}
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
// It's unsound to instantiate tables containing generic methods,
|
|
// since mutating properties means table properties should be invariant.
|
|
TEST_CASE_FIXTURE(Fixture, "invariant_table_properties_means_instantiating_tables_in_assignment_is_unsound")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
local t = {}
|
|
function t.m(x) return x end
|
|
local a : string = t.m("hi")
|
|
local b : number = t.m(5)
|
|
local u : { m : (number)->number } = t -- This shouldn't typecheck
|
|
u.m = function(x) return 1+x end
|
|
local c : string = t.m("hi")
|
|
)");
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(2, result);
|
|
|
|
CHECK(get<TypeMismatch>(result.errors[0]));
|
|
CHECK(Location{{6, 45}, {6, 46}} == result.errors[0].location);
|
|
|
|
CHECK(get<ExplicitFunctionAnnotationRecommended>(result.errors[1]));
|
|
}
|
|
|
|
// TODO: test behavior is wrong with LuauInstantiateInSubtyping until we can re-enable the covariant requirement for instantiation in subtyping
|
|
else if (FFlag::LuauInstantiateInSubtyping)
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
else
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "table_insert_should_cope_with_optional_properties_in_nonstrict")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!nonstrict
|
|
local buttons = {}
|
|
table.insert(buttons, { a = 1 })
|
|
table.insert(buttons, { a = 2, b = true })
|
|
table.insert(buttons, { a = 3 })
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "table_insert_should_cope_with_optional_properties_in_strict")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
local buttons = {}
|
|
table.insert(buttons, { a = 1 })
|
|
table.insert(buttons, { a = 2, b = true })
|
|
table.insert(buttons, { a = 3 })
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "error_detailed_prop")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type A = { x: number, y: number }
|
|
type B = { x: number, y: string }
|
|
|
|
local a: A = { x = 123, y = 456 }
|
|
local b: B = a
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK(toString(result.errors.at(0)) == R"(Type 'A' could not be converted into 'B'; at [read "y"], number is not exactly string)");
|
|
else
|
|
{
|
|
const std::string expected = R"(Type 'A' could not be converted into 'B'
|
|
caused by:
|
|
Property 'y' is not compatible.
|
|
Type 'number' could not be converted into 'string' in an invariant context)";
|
|
CHECK_EQ(expected, toString(result.errors[0]));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "error_detailed_prop_nested")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type AS = { x: number, y: number }
|
|
type BS = { x: number, y: string }
|
|
|
|
type A = { a: boolean, b: AS }
|
|
type B = { a: boolean, b: BS }
|
|
|
|
local a: A = { a = false, b = { x = 123, y = 456 } }
|
|
local b: B = a
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK(toString(result.errors.at(0)) == R"(Type 'A' could not be converted into 'B'; at [read "b"][read "y"], number is not exactly string)");
|
|
else
|
|
{
|
|
const std::string expected = R"(Type 'A' could not be converted into 'B'
|
|
caused by:
|
|
Property 'b' is not compatible.
|
|
Type 'AS' could not be converted into 'BS'
|
|
caused by:
|
|
Property 'y' is not compatible.
|
|
Type 'number' could not be converted into 'string' in an invariant context)";
|
|
CHECK_EQ(expected, toString(result.errors[0]));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "error_detailed_metatable_prop")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a1 = setmetatable({ x = 2, y = 3 }, { __call = function(s) end });
|
|
local b1 = setmetatable({ x = 2, y = "hello" }, { __call = function(s) end });
|
|
local c1: typeof(a1) = b1
|
|
|
|
local a2 = setmetatable({ x = 2, y = 3 }, { __call = function(s) end });
|
|
local b2 = setmetatable({ x = 2, y = 4 }, { __call = function(s, t) end });
|
|
local c2: typeof(a2) = b2
|
|
)");
|
|
|
|
const std::string expected1 = R"(Type 'b1' could not be converted into 'a1'
|
|
caused by:
|
|
Type
|
|
'{ x: number, y: string }'
|
|
could not be converted into
|
|
'{ x: number, y: number }'
|
|
caused by:
|
|
Property 'y' is not compatible.
|
|
Type 'string' could not be converted into 'number' in an invariant context)";
|
|
const std::string expected2 = R"(Type 'b2' could not be converted into 'a2'
|
|
caused by:
|
|
Type
|
|
'{ __call: <a, b>(a, b) -> () }'
|
|
could not be converted into
|
|
'{ __call: <a>(a) -> () }'
|
|
caused by:
|
|
Property '__call' is not compatible.
|
|
Type
|
|
'<a, b>(a, b) -> ()'
|
|
could not be converted into
|
|
'<a>(a) -> ()'; different number of generic type parameters)";
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
// The assignment of c2 to b2 is, surprisingly, allowed under the new
|
|
// solver for two reasons:
|
|
//
|
|
// First, both of the __call functions have hidden ...any arguments
|
|
// because their exact definition is available.
|
|
//
|
|
// Second, nil <: unknown, so we consider that parameter to be optional.
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK("Type 'b1' could not be converted into 'a1'; at [read \"y\"], string is not exactly number" == toString(result.errors[0]));
|
|
}
|
|
else if (FFlag::LuauInstantiateInSubtyping)
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(2, result);
|
|
CHECK_EQ(expected1, toString(result.errors[0]));
|
|
|
|
const std::string expected3 = R"(Type 'b2' could not be converted into 'a2'
|
|
caused by:
|
|
Type
|
|
'{ __call: <a, b>(a, b) -> () }'
|
|
could not be converted into
|
|
'{ __call: <a>(a) -> () }'
|
|
caused by:
|
|
Property '__call' is not compatible.
|
|
Type
|
|
'<a, b>(a, b) -> ()'
|
|
could not be converted into
|
|
'<a>(a) -> ()'; different number of generic type parameters)";
|
|
|
|
CHECK_EQ(expected2, toString(result.errors[1]));
|
|
}
|
|
else
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(2, result);
|
|
CHECK_EQ(expected1, toString(result.errors[0]));
|
|
|
|
std::string expected3 = R"(Type 'b2' could not be converted into 'a2'
|
|
caused by:
|
|
Type
|
|
'{ __call: (a, b) -> () }'
|
|
could not be converted into
|
|
'{ __call: <a>(a) -> () }'
|
|
caused by:
|
|
Property '__call' is not compatible.
|
|
Type
|
|
'(a, b) -> ()'
|
|
could not be converted into
|
|
'<a>(a) -> ()'; different number of generic type parameters)";
|
|
CHECK_EQ(expected3, toString(result.errors[1]));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "error_detailed_indexer_key")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type A = { [number]: string }
|
|
type B = { [string]: string }
|
|
|
|
local a: A = { 'a', 'b' }
|
|
local b: B = a
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CHECK("Type 'A' could not be converted into 'B'; at indexer(), number is not exactly string" == toString(result.errors[0]));
|
|
}
|
|
else
|
|
{
|
|
const std::string expected = R"(Type 'A' could not be converted into 'B'
|
|
caused by:
|
|
Property '[indexer key]' is not compatible.
|
|
Type 'number' could not be converted into 'string' in an invariant context)";
|
|
CHECK_EQ(expected, toString(result.errors[0]));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "error_detailed_indexer_value")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type A = { [number]: number }
|
|
type B = { [number]: string }
|
|
|
|
local a: A = { 1, 2, 3 }
|
|
local b: B = a
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CHECK("Type 'A' could not be converted into 'B'; at indexResult(), number is not exactly string" == toString(result.errors[0]));
|
|
}
|
|
else
|
|
{
|
|
const std::string expected = R"(Type 'A' could not be converted into 'B'
|
|
caused by:
|
|
Property '[indexer value]' is not compatible.
|
|
Type 'number' could not be converted into 'string' in an invariant context)";
|
|
CHECK_EQ(expected, toString(result.errors[0]));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "explicitly_typed_table")
|
|
{
|
|
// Table properties like HasSuper.p must be invariant. The new solver rightly rejects this program.
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
type Super = { x : number }
|
|
type Sub = { x : number, y: number }
|
|
type HasSuper = { p : Super }
|
|
type HasSub = { p : Sub }
|
|
local a: HasSuper = { p = { x = 5, y = 7 }}
|
|
a.p = { x = 9 }
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "explicitly_typed_table_error")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
type Super = { x : number }
|
|
type Sub = { x : number, y: number }
|
|
type HasSuper = { p : Super }
|
|
type HasSub = { p : Sub }
|
|
local tmp = { p = { x = 5, y = 7 }}
|
|
local a: HasSuper = tmp
|
|
a.p = { x = 9 }
|
|
-- needs to be an error because
|
|
local y: number = tmp.p.y
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK(
|
|
"Type 'tmp' could not be converted into 'HasSuper'; at [read \"p\"], { x: number, y: number } is not exactly Super" ==
|
|
toString(result.errors[0])
|
|
);
|
|
else
|
|
{
|
|
const std::string expected = R"(Type 'tmp' could not be converted into 'HasSuper'
|
|
caused by:
|
|
Property 'p' is not compatible.
|
|
Table type '{ x: number, y: number }' not compatible with type 'Super' because the former has extra field 'y')";
|
|
CHECK_EQ(expected, toString(result.errors[0]));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "explicitly_typed_table_with_indexer")
|
|
{
|
|
// CLI-114791 Bidirectional inference should be able to cause the inference engine to forget that a table literal has some property
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
type Super = { x : number }
|
|
type Sub = { x : number, y: number }
|
|
type HasSuper = { [string] : Super }
|
|
type HasSub = { [string] : Sub }
|
|
local a: HasSuper = { p = { x = 5, y = 7 }}
|
|
a.p = { x = 9 }
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "recursive_metatable_type_call")
|
|
{
|
|
// CLI-114782
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
local b
|
|
b = setmetatable({}, {__call = b})
|
|
b()
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
if (DFFlag::LuauImproveNonFunctionCallError)
|
|
CHECK_EQ(toString(result.errors[0]), R"(Cannot call a value of type t1 where t1 = { @metatable { __call: t1 }, { } })");
|
|
else
|
|
CHECK_EQ(toString(result.errors[0]), R"(Cannot call non-function t1 where t1 = { @metatable { __call: t1 }, { } })");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "table_subtyping_shouldn't_add_optional_properties_to_sealed_tables")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
local function setNumber(t: { p: number? }, x:number) t.p = x end
|
|
local function getString(t: { p: string? }):string return t.p or "" end
|
|
-- This shouldn't type-check!
|
|
local function oh(x:number): string
|
|
local t: {} = {}
|
|
setNumber(t, x)
|
|
return getString(t)
|
|
end
|
|
local s: string = oh(37)
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "top_table_type")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
type Table = { [any] : any }
|
|
type HasTable = { p: Table? }
|
|
type HasHasTable = { p: HasTable? }
|
|
local t : Table = { p = 5 }
|
|
local u : HasTable = { p = { p = 5 } }
|
|
local v : HasHasTable = { p = { p = { p = 5 } } }
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "length_operator_union")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local x: {number} | {string}
|
|
local y = #x
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "length_operator_intersection")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local x: {number} & {z:string} -- mixed tables are evil
|
|
local y = #x
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "length_operator_non_table_union")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local x: {number} | any | string
|
|
local y = #x
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "length_operator_union_errors")
|
|
{
|
|
ScopedFastFlag _{FFlag::LuauSolverV2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
local x: {number} | number | string
|
|
local y = #x
|
|
)");
|
|
|
|
// CLI-119936: This shouldn't double error but does under the new solver.
|
|
LUAU_REQUIRE_ERROR_COUNT(2, result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "dont_hang_when_trying_to_look_up_in_cyclic_metatable_index")
|
|
{
|
|
// t :: t1 where t1 = {metatable {__index: t1, __tostring: (t1) -> string}}
|
|
CheckResult result = check(R"(
|
|
local mt = {}
|
|
local t = setmetatable({}, mt)
|
|
mt.__index = t
|
|
|
|
function mt:__tostring()
|
|
return t.p
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK_EQ("Type 't' does not have key 'p'", toString(result.errors[0]));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "give_up_after_one_metatable_index_look_up")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local data = { x = 5 }
|
|
local t1 = setmetatable({}, { __index = data })
|
|
local t2 = setmetatable({}, t1) -- note: must be t1, not a new table
|
|
|
|
local x1 = t1.x -- ok
|
|
local x2 = t2.x -- nope
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK_EQ("Type 't2' does not have key 'x'", toString(result.errors[0]));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "confusing_indexing")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type T = {} & {p: number | string}
|
|
local function f(t: T)
|
|
return t.p
|
|
end
|
|
|
|
local foo = f({p = "string"})
|
|
)");
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
// CLI-114781 Bidirectional checking can't see through the intersection
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
}
|
|
else
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ("number | string", toString(requireType("foo")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "pass_a_union_of_tables_to_a_function_that_requires_a_table")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a: {x: number, y: number, [any]: any} | {y: number}
|
|
|
|
function f(t)
|
|
t.y = 1
|
|
return t
|
|
end
|
|
|
|
local b = f(a)
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
REQUIRE_EQ("{ y: number }", toString(requireType("b")));
|
|
else
|
|
REQUIRE_EQ("{- y: number -}", toString(requireType("b")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "pass_a_union_of_tables_to_a_function_that_requires_a_table_2")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a: {y: number} | {x: number, y: number, [any]: any}
|
|
|
|
function f(t)
|
|
t.y = 1
|
|
return t
|
|
end
|
|
|
|
local b = f(a)
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
REQUIRE_EQ("{ y: number }", toString(requireType("b")));
|
|
else
|
|
REQUIRE_EQ("{- y: number -}", toString(requireType("b")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "unifying_tables_shouldnt_uaf1")
|
|
{
|
|
CheckResult result = check(R"(
|
|
-- This example produced a UAF at one point, caused by pointers to table types becoming
|
|
-- invalidated by child unifiers. (Calling log.concat can cause pointers to become invalid.)
|
|
type _Entry = {
|
|
a: number,
|
|
|
|
middle: (self: _Entry) -> (),
|
|
|
|
z: number
|
|
}
|
|
|
|
export type AnyEntry = _Entry
|
|
|
|
local Entry = {}
|
|
Entry.__index = Entry
|
|
|
|
function Entry:dispose()
|
|
self:middle()
|
|
forgetChildren(self) -- unify free with sealed AnyEntry
|
|
end
|
|
|
|
function forgetChildren(parent: AnyEntry)
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "unifying_tables_shouldnt_uaf2")
|
|
{
|
|
CheckResult result = check(R"(
|
|
-- Another example that UAFd, this time found by fuzzing.
|
|
local _
|
|
do
|
|
_._ *= (_[{n0=_[{[{[_]=_,}]=_,}],}])[_]
|
|
_ = (_.n0)
|
|
end
|
|
_._ *= (_[false])[_]
|
|
_ = (_.cos)
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "cannot_call_tables")
|
|
{
|
|
CheckResult result = check("local foo = {} foo()");
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
CHECK(get<CannotCallNonFunction>(result.errors[0]) != nullptr);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "table_length")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {}
|
|
local s = #t
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK(nullptr != get<TableType>(requireType("t")));
|
|
CHECK_EQ(*builtinTypes->numberType, *requireType("s"));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "nil_assign_doesnt_hit_indexer")
|
|
{
|
|
// CLI-100076 - Assigning a table key to `nil` in the presence of an indexer should always be permitted
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check("local a = {} a[0] = 7 a[0] = nil");
|
|
LUAU_REQUIRE_ERROR_COUNT(0, result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "wrong_assign_does_hit_indexer")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a = {}
|
|
a[0] = 7
|
|
a[0] = 't'
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK((Location{Position{3, 15}, Position{3, 18}}) == result.errors[0].location);
|
|
TypeMismatch* tm = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE(tm);
|
|
CHECK(tm->wantedType == builtinTypes->numberType);
|
|
CHECK(tm->givenType == builtinTypes->stringType);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "nil_assign_doesnt_hit_no_indexer")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a = {a=1, b=2}
|
|
a['a'] = nil
|
|
)");
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK_EQ(
|
|
result.errors[0],
|
|
(TypeError{
|
|
Location{Position{2, 17}, Position{2, 20}},
|
|
TypeMismatch{
|
|
builtinTypes->numberType,
|
|
builtinTypes->nilType,
|
|
}
|
|
})
|
|
);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "free_rhs_table_can_also_be_bound")
|
|
{
|
|
check(R"(
|
|
local o
|
|
local v = o:i()
|
|
|
|
function g(u)
|
|
v = u
|
|
end
|
|
|
|
o:f(g)
|
|
o:h()
|
|
o:h()
|
|
)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "table_unifies_into_map")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local Instance: any
|
|
local UDim2: any
|
|
|
|
function Create(instanceType)
|
|
return function(data)
|
|
local obj = Instance.new(instanceType)
|
|
for k, v in pairs(data) do
|
|
if type(k) == 'number' then
|
|
--v.Parent = obj
|
|
else
|
|
obj[k] = v
|
|
end
|
|
end
|
|
return obj
|
|
end
|
|
end
|
|
|
|
local topbarShadow = Create'ImageLabel'{
|
|
Name = "TopBarShadow";
|
|
Size = UDim2.new(1, 0, 0, 3);
|
|
Position = UDim2.new(0, 0, 1, 0);
|
|
Image = "rbxasset://textures/ui/TopBar/dropshadow.png";
|
|
BackgroundTransparency = 1;
|
|
Active = false;
|
|
Visible = false;
|
|
};
|
|
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "tables_get_names_from_their_locals")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local T = {}
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ("T", toString(requireType("T")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "should_not_unblock_table_type_twice")
|
|
{
|
|
// don't run this when the DCR flag isn't set
|
|
if (!FFlag::LuauSolverV2)
|
|
return;
|
|
|
|
check(R"(
|
|
local timer = peek(timerQueue)
|
|
while timer ~= nil do
|
|
if timer.startTime <= currentTime then
|
|
timer.isQueued = true
|
|
end
|
|
timer = peek(timerQueue)
|
|
end
|
|
)");
|
|
|
|
// Just checking this is enough to satisfy the original bug.
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "generalize_table_argument")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function foo(arr)
|
|
local work = {}
|
|
for i = 1, #arr do
|
|
work[i] = arr[i]
|
|
end
|
|
|
|
return arr
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
const FunctionType* fooType = get<FunctionType>(requireType("foo"));
|
|
REQUIRE(fooType);
|
|
|
|
std::optional<TypeId> fooArg1 = first(fooType->argTypes);
|
|
REQUIRE(fooArg1);
|
|
|
|
const TableType* fooArg1Table = get<TableType>(follow(*fooArg1));
|
|
REQUIRE(fooArg1Table);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK_EQ(fooArg1Table->state, TableState::Sealed);
|
|
else
|
|
CHECK_EQ(fooArg1Table->state, TableState::Generic);
|
|
}
|
|
|
|
/*
|
|
* This test case exposed an oversight in the treatment of free tables.
|
|
* Free tables, like free Types, need to record the scope depth where they were created so that
|
|
* we do not erroneously let-generalize them when they are used in a nested lambda.
|
|
*
|
|
* For more information about let-generalization, see <http://okmij.org/ftp/ML/generalization.html>
|
|
*
|
|
* The important idea here is that the return type of Counter.new is a table with some metatable.
|
|
* That metatable *must* be the same Type as the type of Counter. If it is a copy (produced by
|
|
* the generalization process), then it loses the knowledge that its metatable will have an :incr()
|
|
* method.
|
|
*/
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "dont_quantify_table_that_belongs_to_outer_scope")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local Counter = {}
|
|
Counter.__index = Counter
|
|
|
|
function Counter.new()
|
|
local self = setmetatable({count=0}, Counter)
|
|
return self
|
|
end
|
|
|
|
function Counter:incr()
|
|
self.count = 1
|
|
return self.count
|
|
end
|
|
|
|
local self = Counter.new()
|
|
print(self:incr())
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
TableType* counterType = getMutable<TableType>(requireType("Counter"));
|
|
REQUIRE(counterType);
|
|
|
|
REQUIRE(counterType->props.count("new"));
|
|
const FunctionType* newType = get<FunctionType>(follow(counterType->props["new"].type()));
|
|
REQUIRE(newType);
|
|
|
|
std::optional<TypeId> newRetType = *first(newType->retTypes);
|
|
REQUIRE(newRetType);
|
|
|
|
const MetatableType* newRet = get<MetatableType>(follow(*newRetType));
|
|
REQUIRE(newRet);
|
|
|
|
const TableType* newRetMeta = get<TableType>(follow(newRet->metatable));
|
|
REQUIRE(newRetMeta);
|
|
|
|
CHECK(newRetMeta->props.count("incr"));
|
|
CHECK_EQ(follow(newRet->metatable), follow(requireType("Counter")));
|
|
}
|
|
|
|
// TODO: CLI-39624
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "instantiate_tables_at_scope_level")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
local Option = {}
|
|
Option.__index = Option
|
|
function Option.Is(obj)
|
|
return (type(obj) == "table" and getmetatable(obj) == Option)
|
|
end
|
|
return Option
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "inferring_crazy_table_should_also_be_quick")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
function f(U)
|
|
U(w:s(an):c()():c():U(s):c():c():U(s):c():U(s):cU()):c():U(s):c():U(s):c():c():U(s):c():U(s):cU()
|
|
end
|
|
)");
|
|
|
|
ModulePtr module = getMainModule();
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK_GE(500, module->internalTypes.types.size());
|
|
else
|
|
CHECK_GE(100, module->internalTypes.types.size());
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "MixedPropertiesAndIndexers")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local x = {}
|
|
x.a = "a"
|
|
x[0] = true
|
|
x.b = 37
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "setmetatable_cant_be_used_to_mutate_global_types")
|
|
{
|
|
{
|
|
Fixture fix;
|
|
|
|
// inherit env from parent fixture checker
|
|
fix.frontend.globals.globalScope = frontend.globals.globalScope;
|
|
|
|
fix.check(R"(
|
|
--!nonstrict
|
|
type MT = typeof(setmetatable)
|
|
function wtf(arg: {MT}): typeof(table)
|
|
arg = wtf(arg)
|
|
end
|
|
)");
|
|
}
|
|
|
|
// validate sharedEnv post-typecheck; valuable for debugging some typeck crashes but slows fuzzing down
|
|
// note: it's important for typeck to be destroyed at this point!
|
|
{
|
|
for (auto& p : frontend.globals.globalScope->bindings)
|
|
{
|
|
toString(p.second.typeId); // toString walks the entire type, making sure ASAN catches access to destroyed type arenas
|
|
}
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "evil_table_unification")
|
|
{
|
|
// this code re-infers the type of _ while processing fields of _, which can cause use-after-free
|
|
check(R"(
|
|
--!nonstrict
|
|
_ = ...
|
|
_:table(_,string)[_:gsub(_,...,n0)],_,_:gsub(_,string)[""],_:split(_,...,table)._,n0 = nil
|
|
do end
|
|
)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "dont_crash_when_setmetatable_does_not_produce_a_metatabletypevar")
|
|
{
|
|
CheckResult result = check("local x = setmetatable({})");
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
// CLI-114665: Generic parameters should not also be optional.
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
else
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK_EQ("Argument count mismatch. Function 'setmetatable' expects 2 arguments, but only 1 is specified", toString(result.errors[0]));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "instantiate_table_cloning")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!nonstrict
|
|
local l0:any,l61:t0<t32> = _,math
|
|
while _ do
|
|
_()
|
|
end
|
|
function _():t0<t0>
|
|
end
|
|
type t0<t32> = any
|
|
)");
|
|
|
|
std::optional<TypeId> ty = requireType("math");
|
|
REQUIRE(ty);
|
|
|
|
const TableType* ttv = get<TableType>(*ty);
|
|
REQUIRE(ttv);
|
|
CHECK(ttv->instantiatedTypeParams.empty());
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "instantiate_table_cloning_2")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type X<T> = T
|
|
type K = X<typeof(math)>
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
std::optional<TypeId> ty = requireType("math");
|
|
REQUIRE(ty);
|
|
|
|
const TableType* ttv = get<TableType>(*ty);
|
|
REQUIRE(ttv);
|
|
CHECK(ttv->instantiatedTypeParams.empty());
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "instantiate_table_cloning_3")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type X<T> = T
|
|
local a = {}
|
|
a.x = 4
|
|
local b: X<typeof(a)>
|
|
a.y = 5
|
|
local c: X<typeof(a)>
|
|
c = b
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
std::optional<TypeId> ty = requireType("a");
|
|
REQUIRE(ty);
|
|
|
|
const TableType* ttv = get<TableType>(*ty);
|
|
REQUIRE(ttv);
|
|
CHECK(0 == ttv->instantiatedTypeParams.size());
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "record_location_of_inserted_table_properties")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a = {}
|
|
a.foo = 1234
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
const TableType* tt = get<TableType>(requireType("a"));
|
|
REQUIRE(tt);
|
|
|
|
REQUIRE(tt->props.count("foo"));
|
|
|
|
const Property& prop = tt->props.find("foo")->second;
|
|
CHECK(Location{{2, 10}, {2, 13}} == prop.location);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "table_indexing_error_location")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local foo = {42}
|
|
local bar: number?
|
|
local baz = foo[bar]
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
CHECK_EQ(result.errors[0].location, Location{Position{3, 16}, Position{3, 19}});
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "table_call_metamethod_basic")
|
|
{
|
|
if (!FFlag::LuauSolverV2)
|
|
return;
|
|
|
|
CheckResult result = check(R"(
|
|
local a = setmetatable({
|
|
a = 1,
|
|
}, {
|
|
__call = function(self, b: number)
|
|
return self.a * b
|
|
end,
|
|
})
|
|
|
|
local foo = a(12)
|
|
)");
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK(get<ExplicitFunctionAnnotationRecommended>(result.errors[0]));
|
|
}
|
|
else
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
CHECK(requireType("foo") == builtinTypes->numberType);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "table_call_metamethod_must_be_callable")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a = setmetatable({}, {
|
|
__call = 123,
|
|
})
|
|
|
|
local foo = a()
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
if (!FFlag::LuauSolverV2)
|
|
{
|
|
TypeError e{
|
|
Location{{5, 20}, {5, 21}},
|
|
CannotCallNonFunction{builtinTypes->numberType},
|
|
};
|
|
CHECK(result.errors[0] == e);
|
|
}
|
|
else if (DFFlag::LuauImproveNonFunctionCallError)
|
|
{
|
|
CHECK("Cannot call a value of type a" == toString(result.errors[0]));
|
|
}
|
|
else
|
|
{
|
|
CHECK("Cannot call non-function a" == toString(result.errors[0]));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "table_call_metamethod_generic")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a = setmetatable({}, {
|
|
__call = function<T>(self, b: T)
|
|
return b
|
|
end,
|
|
})
|
|
|
|
local foo = a(12)
|
|
local bar = a("bar")
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
CHECK(requireType("foo") == builtinTypes->numberType);
|
|
CHECK(requireType("bar") == builtinTypes->stringType);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "table_simple_call")
|
|
{
|
|
// The new solver can see that this function is safe to oversaturate.
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
local a = setmetatable({ x = 2 }, {
|
|
__call = function(self)
|
|
return (self.x :: number) * 2 -- should work without annotation in the future
|
|
end
|
|
})
|
|
local b = a()
|
|
local c = a(2) -- too many arguments
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK_EQ("Argument count mismatch. Function 'a' expects 1 argument, but 2 are specified", toString(result.errors[0]));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "access_index_metamethod_that_returns_variadic")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type Foo = {x: string}
|
|
local t = {}
|
|
setmetatable(t, {
|
|
__index = function(x: string): ...Foo
|
|
return {x = x}
|
|
end
|
|
})
|
|
|
|
local foo = t.bar
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
ToStringOptions o;
|
|
o.exhaustive = true;
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK_EQ("{ x: string }", toString(requireType("foo"), o));
|
|
else
|
|
CHECK_EQ("{| x: string |}", toString(requireType("foo"), o));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "dont_invalidate_the_properties_iterator_of_free_table_when_rolled_back")
|
|
{
|
|
fileResolver.source["Module/Backend/Types"] = R"(
|
|
export type Fiber = {
|
|
return_: Fiber?
|
|
}
|
|
return {}
|
|
)";
|
|
|
|
fileResolver.source["Module/Backend"] = R"(
|
|
local Types = require(script.Types)
|
|
type Fiber = Types.Fiber
|
|
type ReactRenderer = { findFiberByHostInstance: () -> Fiber? }
|
|
|
|
local function attach(renderer): ()
|
|
local function getPrimaryFiber(fiber)
|
|
local alternate = fiber.alternate
|
|
return fiber
|
|
end
|
|
|
|
local function getFiberIDForNative()
|
|
local fiber = renderer.findFiberByHostInstance()
|
|
fiber = fiber.return_
|
|
return getPrimaryFiber(fiber)
|
|
end
|
|
end
|
|
|
|
function culprit(renderer: ReactRenderer): ()
|
|
attach(renderer)
|
|
end
|
|
|
|
return culprit
|
|
)";
|
|
|
|
CheckResult result = frontend.check("Module/Backend");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "checked_prop_too_early")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t: {x: number?}? = {x = nil}
|
|
local u = t.x and t or 5
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CHECK_EQ("Value of type '{ x: number? }?' could be nil", toString(result.errors[0]));
|
|
CHECK_EQ("number | { x: number }", toString(requireType("u")));
|
|
}
|
|
else
|
|
{
|
|
CHECK_EQ("Value of type '{| x: number? |}?' could be nil", toString(result.errors[0]));
|
|
CHECK_EQ("number | {| x: number? |}", toString(requireType("u")));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "accidentally_checked_prop_in_opposite_branch")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t: {x: number?}? = {x = nil}
|
|
local u = t and t.x == 5 or t.x == 31337
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK_EQ("Value of type '{ x: number? }?' could be nil", toString(result.errors[0]));
|
|
else
|
|
CHECK_EQ("Value of type '{| x: number? |}?' could be nil", toString(result.errors[0]));
|
|
CHECK_EQ("boolean", toString(requireType("u")));
|
|
}
|
|
|
|
/*
|
|
* We had an issue where part of the type of pairs() was an unsealed table.
|
|
* This test depends on FFlagDebugLuauFreezeArena to trigger it.
|
|
*/
|
|
TEST_CASE_FIXTURE(Fixture, "pairs_parameters_are_not_unsealed_tables")
|
|
{
|
|
check(R"(
|
|
function _(l0:{n0:any})
|
|
_ = pairs
|
|
end
|
|
)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "table_function_check_use_after_free")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {}
|
|
|
|
function t.x(value)
|
|
for k,v in pairs(t) do end
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
/*
|
|
* When we add new properties to an unsealed table, we should do a level check and promote the property type to be at
|
|
* the level of the table.
|
|
*/
|
|
TEST_CASE_FIXTURE(Fixture, "inferred_properties_of_a_table_should_start_with_the_same_TypeLevel_of_that_table")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
local T = {}
|
|
|
|
local function f(prop)
|
|
T[1] = {
|
|
prop = prop,
|
|
}
|
|
end
|
|
|
|
local function g()
|
|
local l = T[1].prop
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
// The real bug here was that we weren't always uncondionally typechecking a trailing return statement last.
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "dont_leak_free_table_props")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function a(state)
|
|
print(state.blah)
|
|
end
|
|
|
|
local function b(state) -- The bug was that we inferred state: {blah: any, gwar: any}
|
|
print(state.gwar)
|
|
end
|
|
|
|
return function()
|
|
return function(state)
|
|
a(state)
|
|
b(state)
|
|
end
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CHECK_EQ("({ read blah: unknown }) -> ()", toString(requireType("a")));
|
|
CHECK_EQ("({ read gwar: unknown }) -> ()", toString(requireType("b")));
|
|
CHECK_EQ("(...any) -> ({ read blah: unknown, read gwar: unknown }) -> ()", toString(getMainModule()->returnType));
|
|
}
|
|
else
|
|
{
|
|
CHECK_EQ("<a>({+ blah: a +}) -> ()", toString(requireType("a")));
|
|
CHECK_EQ("<a>({+ gwar: a +}) -> ()", toString(requireType("b")));
|
|
CHECK_EQ("() -> <a, b>({+ blah: a, gwar: b +}) -> ()", toString(getMainModule()->returnType));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "mixed_tables_with_implicit_numbered_keys")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t: { [string]: number } = { 5, 6, 7 }
|
|
)");
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK(
|
|
"Type '{number}' could not be converted into '{ [string]: number }'; at indexer(), number is not exactly string" ==
|
|
toString(result.errors[0])
|
|
);
|
|
}
|
|
else
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(3, result);
|
|
|
|
CHECK_EQ("Type 'number' could not be converted into 'string'", toString(result.errors[0]));
|
|
CHECK_EQ("Type 'number' could not be converted into 'string'", toString(result.errors[1]));
|
|
CHECK_EQ("Type 'number' could not be converted into 'string'", toString(result.errors[2]));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "expected_indexer_value_type_extra")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type X = { { x: boolean?, y: boolean? } }
|
|
|
|
local l1: {[string]: X} = { key = { { x = true }, { y = true } } }
|
|
local l2: {[any]: X} = { key = { { x = true }, { y = true } } }
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "expected_indexer_value_type_extra_2")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type X = {[any]: string | boolean}
|
|
|
|
local x: X = { key = "str" }
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "expected_indexer_from_table_union")
|
|
{
|
|
LUAU_REQUIRE_NO_ERRORS(check(R"(local a: {[string]: {number | string}} = {a = {2, 's'}})"));
|
|
LUAU_REQUIRE_NO_ERRORS(check(R"(local a: {[string]: {number | string}}? = {a = {2, 's'}})"));
|
|
LUAU_REQUIRE_NO_ERRORS(check(R"(local a: {[string]: {[string]: {string?}}?} = {["a"] = {["b"] = {"a", "b"}}})"));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "prop_access_on_key_whose_types_mismatches")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t: {number} = {}
|
|
local x = t.x
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK_EQ("Key 'x' not found in table '{number}'", toString(result.errors[0]));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "prop_access_on_unions_of_indexers_where_key_whose_types_mismatches")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t: { [number]: number } | { [boolean]: number } = {}
|
|
local u = t.x
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK_EQ("Type '{ [boolean]: number } | {number}' does not have key 'x'", toString(result.errors[0]));
|
|
else
|
|
CHECK_EQ("Type '{number} | {| [boolean]: number |}' does not have key 'x'", toString(result.errors[0]));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "leaking_bad_metatable_errors")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a = setmetatable({}, 1)
|
|
local b = a.x
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(2, result);
|
|
CHECK_EQ("Metatable was not a table", toString(result.errors[0]));
|
|
CHECK_EQ("Type 'a' does not have key 'x'", toString(result.errors[1]));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "scalar_is_a_subtype_of_a_compatible_polymorphic_shape_type")
|
|
{
|
|
// CLI-115087 The new solver cannot infer that a table-like type is actually string
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
local function f(s)
|
|
return s:lower()
|
|
end
|
|
|
|
f("foo" :: string)
|
|
f("bar" :: "bar")
|
|
f("baz" :: "bar" | "baz")
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "scalar_is_not_a_subtype_of_a_compatible_polymorphic_shape_type")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function f(s)
|
|
return s:absolutely_no_scalar_has_this_method()
|
|
end
|
|
|
|
f("foo" :: string)
|
|
f("bar" :: "bar")
|
|
f("baz" :: "bar" | "baz")
|
|
)");
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
// CLI-115090 Error reporting is quite bad in this case.
|
|
|
|
// This should be just 3
|
|
LUAU_REQUIRE_ERROR_COUNT(4, result);
|
|
|
|
TypeMismatch* tm1 = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE(tm1);
|
|
CHECK("typeof(string)" == toString(tm1->givenType));
|
|
CHECK("t1 where t1 = { read absolutely_no_scalar_has_this_method: (t1) -> (a...) }" == toString(tm1->wantedType));
|
|
|
|
TypeMismatch* tm2 = get<TypeMismatch>(result.errors[1]);
|
|
REQUIRE(tm2);
|
|
CHECK("typeof(string)" == toString(tm2->givenType));
|
|
CHECK("t1 where t1 = { read absolutely_no_scalar_has_this_method: (t1) -> (a...) }" == toString(tm2->wantedType));
|
|
|
|
TypeMismatch* tm3 = get<TypeMismatch>(result.errors[2]);
|
|
REQUIRE(tm3);
|
|
CHECK("typeof(string)" == toString(tm3->givenType));
|
|
CHECK("t1 where t1 = { read absolutely_no_scalar_has_this_method: (t1) -> (a...) }" == toString(tm3->wantedType));
|
|
|
|
TypeMismatch* tm4 = get<TypeMismatch>(result.errors[3]);
|
|
REQUIRE(tm4);
|
|
CHECK("typeof(string)" == toString(tm4->givenType));
|
|
CHECK("t1 where t1 = { read absolutely_no_scalar_has_this_method: (t1) -> (a...) }" == toString(tm4->wantedType));
|
|
}
|
|
else
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(3, result);
|
|
|
|
const std::string expected1 =
|
|
R"(Type 'string' could not be converted into 't1 where t1 = {- absolutely_no_scalar_has_this_method: (t1) -> (a...) -}'
|
|
caused by:
|
|
The former's metatable does not satisfy the requirements.
|
|
Table type 'typeof(string)' not compatible with type 't1 where t1 = {- absolutely_no_scalar_has_this_method: (t1) -> (a...) -}' because the former is missing field 'absolutely_no_scalar_has_this_method')";
|
|
CHECK_EQ(expected1, toString(result.errors[0]));
|
|
|
|
const std::string expected2 =
|
|
R"(Type '"bar"' could not be converted into 't1 where t1 = {- absolutely_no_scalar_has_this_method: (t1) -> (a...) -}'
|
|
caused by:
|
|
The former's metatable does not satisfy the requirements.
|
|
Table type 'typeof(string)' not compatible with type 't1 where t1 = {- absolutely_no_scalar_has_this_method: (t1) -> (a...) -}' because the former is missing field 'absolutely_no_scalar_has_this_method')";
|
|
CHECK_EQ(expected2, toString(result.errors[1]));
|
|
|
|
const std::string expected3 = R"(Type
|
|
'"bar" | "baz"'
|
|
could not be converted into
|
|
't1 where t1 = {- absolutely_no_scalar_has_this_method: (t1) -> (a...) -}'
|
|
caused by:
|
|
Not all union options are compatible.
|
|
Type '"bar"' could not be converted into 't1 where t1 = {- absolutely_no_scalar_has_this_method: (t1) -> (a...) -}'
|
|
caused by:
|
|
The former's metatable does not satisfy the requirements.
|
|
Table type 'typeof(string)' not compatible with type 't1 where t1 = {- absolutely_no_scalar_has_this_method: (t1) -> (a...) -}' because the former is missing field 'absolutely_no_scalar_has_this_method')";
|
|
CHECK_EQ(expected3, toString(result.errors[2]));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "a_free_shape_can_turn_into_a_scalar_if_it_is_compatible")
|
|
{
|
|
// CLI-115087 The new solver cannot infer that a table-like type is actually string
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
local function f(s): string
|
|
local foo = s:lower()
|
|
return s
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
CHECK_EQ("(string) -> string", toString(requireType("f")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "a_free_shape_cannot_turn_into_a_scalar_if_it_is_not_compatible")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function f(s): string
|
|
local foo = s:absolutely_no_scalar_has_this_method()
|
|
return s
|
|
end
|
|
)");
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(4, result);
|
|
|
|
CHECK(toString(result.errors[0]) == "Parameter 's' has been reduced to never. This function is not callable with any possible value.");
|
|
// FIXME: These free types should have been generalized by now.
|
|
CHECK(
|
|
toString(result.errors[1]) ==
|
|
"Parameter 's' is required to be a subtype of '{- read absolutely_no_scalar_has_this_method: ('a <: (never) -> ('b, c...)) -}' here."
|
|
);
|
|
CHECK(toString(result.errors[2]) == "Parameter 's' is required to be a subtype of 'string' here.");
|
|
CHECK(get<CannotCallNonFunction>(result.errors[3]));
|
|
|
|
CHECK_EQ("(never) -> string", toString(requireType("f")));
|
|
}
|
|
else
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
const std::string expected =
|
|
R"(Type 't1 where t1 = {+ absolutely_no_scalar_has_this_method: (t1) -> (a, b...) +}' could not be converted into 'string'
|
|
caused by:
|
|
The former's metatable does not satisfy the requirements.
|
|
Table type 'typeof(string)' not compatible with type 't1 where t1 = {+ absolutely_no_scalar_has_this_method: (t1) -> (a, b...) +}' because the former is missing field 'absolutely_no_scalar_has_this_method')";
|
|
CHECK_EQ(expected, toString(result.errors[0]));
|
|
|
|
CHECK_EQ("<a, b...>(t1) -> string where t1 = {+ absolutely_no_scalar_has_this_method: (t1) -> (a, b...) +}", toString(requireType("f")));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "a_free_shape_can_turn_into_a_scalar_directly")
|
|
{
|
|
// We need egraphs to simplify the type of `out` here. CLI-114134
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, false};
|
|
|
|
CheckResult result = check(R"(
|
|
local function stringByteList(str)
|
|
local out = {}
|
|
for i = 1, #str do
|
|
table.insert(out, string.byte(str, i))
|
|
end
|
|
return table.concat(out, ",")
|
|
end
|
|
|
|
local x = stringByteList("xoo")
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "invariant_table_properties_means_instantiating_tables_in_call_is_unsound")
|
|
{
|
|
ScopedFastFlag sff[]{
|
|
{FFlag::LuauInstantiateInSubtyping, true},
|
|
};
|
|
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
local t = {}
|
|
function t.m<T>(x: T) return x end
|
|
local a : string = t.m("hi")
|
|
local b : number = t.m(5)
|
|
function f(x : { m : (number)->number })
|
|
x.m = function(x: number) return 1+x end
|
|
end
|
|
|
|
f(t) -- This shouldn't typecheck
|
|
|
|
local c : string = t.m("hi")
|
|
)");
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
// FIXME. We really should be reporting just one error in this case. CLI-114509
|
|
LUAU_REQUIRE_ERROR_COUNT(3, result);
|
|
|
|
CHECK(get<TypePackMismatch>(result.errors[0]));
|
|
CHECK(get<TypeMismatch>(result.errors[1]));
|
|
CHECK(get<TypeMismatch>(result.errors[2]));
|
|
}
|
|
else
|
|
{
|
|
// TODO: test behavior is wrong until we can re-enable the covariant requirement for instantiation in subtyping
|
|
// LUAU_REQUIRE_ERRORS(result);
|
|
// CHECK_EQ(toString(result.errors[0]), R"(Type 't' could not be converted into '{| m: (number) -> number |}'
|
|
// caused by:
|
|
// Property 'm' is not compatible. Type '<a>(a) -> a' could not be converted into '(number) -> number'; different number of generic type
|
|
// parameters)");
|
|
// // this error message is not great since the underlying issue is that the context is invariant,
|
|
// and `(number) -> number` cannot be a subtype of `<a>(a) -> a`.
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "generic_table_instantiation_potential_regression")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
|
|
function f(x)
|
|
x.p = 5
|
|
return x
|
|
end
|
|
local g : ({ p : number, q : string }) -> ({ p : number, r : boolean }) = f
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
const TypeMismatch* error = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE_MESSAGE(error, "Expected TypeMismatch but got " << result.errors[0]);
|
|
|
|
CHECK("({ p: number, q: string }) -> { p: number, r: boolean }" == toString(error->wantedType));
|
|
CHECK("({ p: number }) -> { p: number }" == toString(error->givenType));
|
|
}
|
|
else
|
|
{
|
|
const MissingProperties* error = get<MissingProperties>(result.errors[0]);
|
|
REQUIRE_MESSAGE(error != nullptr, "Expected MissingProperties but got " << result.errors[0]);
|
|
|
|
REQUIRE(error->properties.size() == 1);
|
|
CHECK_EQ("r", error->properties[0]);
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "setmetatable_has_a_side_effect")
|
|
{
|
|
if (!FFlag::LuauSolverV2)
|
|
return;
|
|
|
|
CheckResult result = check(R"(
|
|
local mt = {
|
|
__add = function(x, y)
|
|
return 123
|
|
end,
|
|
}
|
|
|
|
local foo = {}
|
|
setmetatable(foo, mt)
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
CHECK(toString(requireType("foo")) == "{ @metatable mt, foo }");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "tables_should_be_fully_populated")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local t = {
|
|
x = 5 :: NonexistingTypeWhichEndsUpReturningAnErrorType,
|
|
y = 5
|
|
}
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
ToStringOptions opts;
|
|
opts.exhaustive = true;
|
|
CHECK_EQ("{ x: *error-type*, y: number }", toString(requireType("t"), opts));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "fuzz_table_indexer_unification_can_bound_owner_to_string")
|
|
{
|
|
CheckResult result = check(R"(
|
|
sin,_ = nil
|
|
_ = _[_.sin][_._][_][_]._
|
|
_[_] = _
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "fuzz_table_extra_prop_unification_can_bound_owner_to_string")
|
|
{
|
|
CheckResult result = check(R"(
|
|
l0,_ = nil
|
|
_ = _,_[_.n5]._[_][_][_]._
|
|
_._.foreach[_],_ = _[_],_._
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "fuzz_typelevel_promote_on_changed_table_type")
|
|
{
|
|
CheckResult result = check(R"(
|
|
_._,_ = nil
|
|
_ = _.foreach[_]._,_[_.n5]._[_.foreach][_][_]._
|
|
_ = _._
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "fuzz_table_unify_instantiated_table")
|
|
{
|
|
ScopedFastFlag sff[]{
|
|
{FFlag::LuauInstantiateInSubtyping, true},
|
|
};
|
|
|
|
CheckResult result = check(R"(
|
|
function _(...)
|
|
end
|
|
local function l0():typeof(_()()[_()()[_]])
|
|
end
|
|
return _[_()()[_]] <= _
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "fuzz_table_unify_instantiated_table_with_prop_realloc")
|
|
{
|
|
ScopedFastFlag sff[]{
|
|
{FFlag::LuauInstantiateInSubtyping, true},
|
|
};
|
|
|
|
CheckResult result = check(R"(
|
|
function _(l0,l0)
|
|
do
|
|
_ = _().n0
|
|
end
|
|
l0(_()._,_)
|
|
end
|
|
_(_,function(...)
|
|
end)
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "fuzz_table_unify_prop_realloc")
|
|
{
|
|
CheckResult result = check(R"(
|
|
n3,_ = nil
|
|
_ = _[""]._,_[l0][_._][{[_]=_,_=_,}][_G].number
|
|
_ = {_,}
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "when_augmenting_an_unsealed_table_with_an_indexer_apply_the_correct_scope_to_the_indexer_type")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local events = {}
|
|
local mockObserveEvent = function(_, key, callback)
|
|
events[key] = callback
|
|
end
|
|
|
|
events['FriendshipNotifications']({
|
|
EventArgs = {
|
|
UserId2 = '2'
|
|
},
|
|
Type = 'FriendshipDeclined'
|
|
})
|
|
)");
|
|
|
|
TypeId ty = follow(requireType("events"));
|
|
const TableType* tt = get<TableType>(ty);
|
|
REQUIRE_MESSAGE(tt, "Expected table but got " << toString(ty, {true}));
|
|
|
|
CHECK(tt->props.empty());
|
|
REQUIRE(tt->indexer);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK("unknown" == toString(tt->indexer->indexType));
|
|
else
|
|
CHECK("string" == toString(tt->indexer->indexType));
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "dont_extend_unsealed_tables_in_rvalue_position")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local testDictionary = {
|
|
FruitName = "Lemon",
|
|
FruitColor = "Yellow",
|
|
Sour = true
|
|
}
|
|
|
|
local print: any
|
|
|
|
print(testDictionary[""])
|
|
)");
|
|
|
|
TypeId ty = follow(requireType("testDictionary"));
|
|
const TableType* ttv = get<TableType>(ty);
|
|
REQUIRE(ttv);
|
|
|
|
CHECK(0 == ttv->props.count(""));
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
else
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "extend_unsealed_table_with_metatable")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local T = setmetatable({}, {
|
|
__call = function(_, name: string?)
|
|
end,
|
|
})
|
|
|
|
T.for_ = "for_"
|
|
|
|
return T
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "top_table_type_is_isomorphic_to_empty_sealed_table_type")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local None = newproxy(true)
|
|
local mt = getmetatable(None)
|
|
mt.__tostring = function()
|
|
return "Object.None"
|
|
end
|
|
|
|
function assign(...)
|
|
for index = 1, select("#", ...) do
|
|
local rest = select(index, ...)
|
|
|
|
if rest ~= nil and typeof(rest) == "table" then
|
|
for key, value in pairs(rest) do
|
|
end
|
|
end
|
|
end
|
|
end
|
|
)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "luau-polyfill.Array.includes")
|
|
{
|
|
|
|
CheckResult result = check(R"(
|
|
type Array<T> = { [number]: T }
|
|
|
|
function indexOf<T>(array: Array<T>, searchElement: any, fromIndex: number?): number
|
|
return -1
|
|
end
|
|
|
|
return function<T>(array: Array<T>, searchElement: any, fromIndex: number?): boolean
|
|
return -1 ~= indexOf(array, searchElement, fromIndex)
|
|
end
|
|
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "certain_properties_of_table_literal_arguments_can_be_covariant")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function f(a: {[string]: string | {any} | nil })
|
|
return a
|
|
end
|
|
|
|
local x = f({
|
|
title = "Feature.VirtualEvents.EnableNotificationsModalTitle",
|
|
body = "Feature.VirtualEvents.EnableNotificationsModalBody",
|
|
notNow = "Feature.VirtualEvents.NotNowButton",
|
|
getNotified = "Feature.VirtualEvents.GetNotifiedButton",
|
|
})
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "subproperties_can_also_be_covariantly_tested")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type T = {
|
|
[string]: {[string]: (string | number)?}
|
|
}
|
|
|
|
function f(t: T)
|
|
return t
|
|
end
|
|
|
|
local x = f({
|
|
subprop={x="hello"}
|
|
})
|
|
|
|
local y = f({
|
|
subprop={x=41}
|
|
})
|
|
|
|
local z = f({
|
|
subprop={}
|
|
})
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "cyclic_shifted_tables")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function id<a>(x: a): a
|
|
return x
|
|
end
|
|
|
|
-- Remove name from cyclic table
|
|
local foo = id({})
|
|
foo.foo = id({})
|
|
foo.foo.foo = id({})
|
|
foo.foo.foo.foo = id({})
|
|
foo.foo.foo.foo.foo = foo
|
|
|
|
local almostFoo = id({})
|
|
almostFoo.foo = id({})
|
|
almostFoo.foo.foo = id({})
|
|
almostFoo.foo.foo.foo = id({})
|
|
almostFoo.foo.foo.foo.foo = almostFoo
|
|
-- Shift
|
|
almostFoo = almostFoo.foo.foo
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "cli_84607_missing_prop_in_array_or_dict")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauFixIndexerSubtypingOrdering, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type Thing = { name: string, prop: boolean }
|
|
|
|
local arrayOfThings : {Thing} = {
|
|
{ name = "a" }
|
|
}
|
|
|
|
local dictOfThings : {[string]: Thing} = {
|
|
a = { name = "a" }
|
|
}
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(2, result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
const TypeMismatch* err1 = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE_MESSAGE(err1, "Expected TypeMismatch but got " << result.errors[0]);
|
|
|
|
CHECK("{Thing}" == toString(err1->wantedType));
|
|
CHECK("{{ name: string }}" == toString(err1->givenType));
|
|
|
|
const TypeMismatch* err2 = get<TypeMismatch>(result.errors[1]);
|
|
REQUIRE_MESSAGE(err2, "Expected TypeMismatch but got " << result.errors[1]);
|
|
|
|
CHECK("{ [string]: Thing }" == toString(err2->wantedType));
|
|
CHECK("{ [string]: { name: string } }" == toString(err2->givenType));
|
|
}
|
|
else
|
|
{
|
|
TypeError& err1 = result.errors[0];
|
|
MissingProperties* error1 = get<MissingProperties>(err1);
|
|
REQUIRE(error1);
|
|
REQUIRE(error1->properties.size() == 1);
|
|
|
|
CHECK_EQ("prop", error1->properties[0]);
|
|
|
|
TypeError& err2 = result.errors[1];
|
|
TypeMismatch* mismatch = get<TypeMismatch>(err2);
|
|
REQUIRE(mismatch);
|
|
MissingProperties* error2 = get<MissingProperties>(*mismatch->error);
|
|
REQUIRE(error2);
|
|
REQUIRE(error2->properties.size() == 1);
|
|
|
|
CHECK_EQ("prop", error2->properties[0]);
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "simple_method_definition")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local T = {}
|
|
|
|
function T:m()
|
|
return 5
|
|
end
|
|
|
|
return T
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK_EQ("{ m: (unknown) -> number }", toString(getMainModule()->returnType, ToStringOptions{true}));
|
|
else
|
|
CHECK_EQ("{| m: <a>(a) -> number |}", toString(getMainModule()->returnType, ToStringOptions{true}));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "identify_all_problematic_table_fields")
|
|
{
|
|
ScopedFastFlag sff_LuauSolverV2{FFlag::LuauSolverV2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type T = {
|
|
a: number,
|
|
b: string,
|
|
c: boolean,
|
|
}
|
|
|
|
local a: T = {
|
|
a = "foo",
|
|
b = false,
|
|
c = 123,
|
|
}
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
std::string expected =
|
|
"Type '{ a: string, b: boolean, c: number }' could not be converted into 'T'; at [read \"a\"], string is not exactly number"
|
|
"\n\tat [read \"b\"], boolean is not exactly string"
|
|
"\n\tat [read \"c\"], number is not exactly boolean";
|
|
CHECK(toString(result.errors[0]) == expected);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "read_and_write_only_table_properties_are_unsupported")
|
|
{
|
|
ScopedFastFlag sff[] = {
|
|
{FFlag::LuauSolverV2, false},
|
|
};
|
|
|
|
CheckResult result = check(R"(
|
|
type W = {read x: number}
|
|
type X = {write x: boolean}
|
|
|
|
type Y = {read ["prop"]: boolean}
|
|
type Z = {write ["prop"]: string}
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(4, result);
|
|
|
|
CHECK("read keyword is illegal here" == toString(result.errors[0]));
|
|
CHECK(Location{{1, 18}, {1, 22}} == result.errors[0].location);
|
|
CHECK("write keyword is illegal here" == toString(result.errors[1]));
|
|
CHECK(Location{{2, 18}, {2, 23}} == result.errors[1].location);
|
|
CHECK("read keyword is illegal here" == toString(result.errors[2]));
|
|
CHECK(Location{{4, 18}, {4, 22}} == result.errors[2].location);
|
|
CHECK("write keyword is illegal here" == toString(result.errors[3]));
|
|
CHECK(Location{{5, 18}, {5, 23}} == result.errors[3].location);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "read_ond_write_only_indexers_are_unsupported")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type T = {read [string]: number}
|
|
type U = {write [string]: boolean}
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(2, result);
|
|
|
|
CHECK("read keyword is illegal here" == toString(result.errors[0]));
|
|
CHECK(Location{{1, 18}, {1, 22}} == result.errors[0].location);
|
|
CHECK("write keyword is illegal here" == toString(result.errors[1]));
|
|
CHECK(Location{{2, 18}, {2, 23}} == result.errors[1].location);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "infer_write_property")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
function f(t)
|
|
t.y = 1
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK("({ y: number }) -> ()" == toString(requireType("f")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "table_subtyping_error_suppression")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function one(tbl: {x: any}) end
|
|
function two(tbl: {x: string}) one(tbl) end -- ok, string <: any and any <: string
|
|
|
|
function three(tbl: {x: any, y: string}) end
|
|
function four(tbl: {x: string, y: string}) three(tbl) end -- ok, string <: any, any <: string, string <: string
|
|
function five(tbl: {x: string, y: number}) three(tbl) end -- error, string <: any, any <: string, but number </: string
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
TypeMismatch* tm = get<TypeMismatch>(result.errors[0]);
|
|
REQUIRE(tm);
|
|
|
|
|
|
// the new solver reports specifically the inner mismatch, rather than the whole table
|
|
// honestly not sure which of these is a better developer experience.
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
CHECK_EQ(*tm->wantedType, *builtinTypes->stringType);
|
|
CHECK_EQ(*tm->givenType, *builtinTypes->numberType);
|
|
}
|
|
else
|
|
{
|
|
CHECK_EQ("{| x: any, y: string |}", toString(tm->wantedType));
|
|
CHECK_EQ("{| x: string, y: number |}", toString(tm->givenType));
|
|
}
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "write_to_read_only_property")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
function f(t: {read x: number})
|
|
t.x = 5
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
CHECK("Property x of table '{ read x: number }' is read-only" == toString(result.errors[0]));
|
|
|
|
PropertyAccessViolation* pav = get<PropertyAccessViolation>(result.errors[0]);
|
|
REQUIRE(pav);
|
|
|
|
CHECK("{ read x: number }" == toString(pav->table, {true}));
|
|
CHECK("x" == pav->key);
|
|
CHECK(PropertyAccessViolation::CannotWrite == pav->context);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "write_to_unusually_named_read_only_property")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
function f(t: {read ["hello world"]: number})
|
|
t["hello world"] = 5
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
CHECK("Property \"hello world\" of table '{ read [\"hello world\"]: number }' is read-only" == toString(result.errors[0]));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "write_annotations_are_unsupported_even_with_the_new_solver")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
function f(t: {write foo: number})
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
CHECK("write keyword is illegal here" == toString(result.errors[0]));
|
|
CHECK(Location{{1, 23}, {1, 28}} == result.errors[0].location);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "read_and_write_only_table_properties_are_unsupported")
|
|
{
|
|
ScopedFastFlag sff[] = {{FFlag::LuauSolverV2, false}};
|
|
|
|
CheckResult result = check(R"(
|
|
type W = {read x: number}
|
|
type X = {write x: boolean}
|
|
|
|
type Y = {read ["prop"]: boolean}
|
|
type Z = {write ["prop"]: string}
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(4, result);
|
|
|
|
CHECK("read keyword is illegal here" == toString(result.errors[0]));
|
|
CHECK(Location{{1, 18}, {1, 22}} == result.errors[0].location);
|
|
CHECK("write keyword is illegal here" == toString(result.errors[1]));
|
|
CHECK(Location{{2, 18}, {2, 23}} == result.errors[1].location);
|
|
CHECK("read keyword is illegal here" == toString(result.errors[2]));
|
|
CHECK(Location{{4, 18}, {4, 22}} == result.errors[2].location);
|
|
CHECK("write keyword is illegal here" == toString(result.errors[3]));
|
|
CHECK(Location{{5, 18}, {5, 23}} == result.errors[3].location);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "read_ond_write_only_indexers_are_unsupported")
|
|
{
|
|
ScopedFastFlag sff[] = {{FFlag::LuauSolverV2, false}};
|
|
|
|
CheckResult result = check(R"(
|
|
type T = {read [string]: number}
|
|
type U = {write [string]: boolean}
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(2, result);
|
|
|
|
CHECK("read keyword is illegal here" == toString(result.errors[0]));
|
|
CHECK(Location{{1, 18}, {1, 22}} == result.errors[0].location);
|
|
CHECK("write keyword is illegal here" == toString(result.errors[1]));
|
|
CHECK(Location{{2, 18}, {2, 23}} == result.errors[1].location);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "table_writes_introduce_write_properties")
|
|
{
|
|
if (!FFlag::LuauSolverV2)
|
|
return;
|
|
|
|
ScopedFastFlag sff[] = {{FFlag::LuauSolverV2, true}};
|
|
|
|
CheckResult result = check(R"(
|
|
function oc(player, speaker)
|
|
local head = speaker.Character:FindFirstChild('Head')
|
|
speaker.Character = player[1].Character
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK(
|
|
"<a, b...>({{ read Character: t1 }}, { Character: t1 }) -> () "
|
|
"where "
|
|
"t1 = { read FindFirstChild: (t1, string) -> (a, b...) }" == toString(requireType("oc"))
|
|
);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "tables_can_have_both_metatables_and_indexers")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a = {}
|
|
a[1] = 5
|
|
a[2] = 17
|
|
|
|
local t = {}
|
|
setmetatable(a, t)
|
|
|
|
local c = a[1]
|
|
print(a[1])
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK("number" == toString(requireType("c")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "refined_thing_can_be_an_array")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function foo(x, y)
|
|
if x then
|
|
return x[1]
|
|
else
|
|
return y
|
|
end
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK("<a>({a}, a) -> a" == toString(requireType("foo")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "parameter_was_set_an_indexer_and_bounded_by_string")
|
|
{
|
|
if (!FFlag::LuauSolverV2)
|
|
return;
|
|
|
|
CheckResult result = check(R"(
|
|
function f(t)
|
|
local s: string = t
|
|
t[5] = 7
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(3, result);
|
|
|
|
CHECK_EQ("Parameter 't' has been reduced to never. This function is not callable with any possible value.", toString(result.errors[0]));
|
|
CHECK_EQ("Parameter 't' is required to be a subtype of 'string' here.", toString(result.errors[1]));
|
|
CHECK_EQ("Parameter 't' is required to be a subtype of '{number}' here.", toString(result.errors[2]));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "parameter_was_set_an_indexer_and_bounded_by_another_parameter")
|
|
{
|
|
if (!FFlag::LuauSolverV2)
|
|
return;
|
|
|
|
CheckResult result = check(R"(
|
|
function f(t1, t2)
|
|
t1[5] = 7 -- 't1 <: {number}
|
|
t2 = t1 -- 't1 <: 't2
|
|
t1[5] = 7 -- 't1 <: {number}
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
// FIXME CLI-114134. We need to simplify types more consistently.
|
|
CHECK_EQ("(unknown & {number} & {number}, unknown) -> ()", toString(requireType("f")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "write_to_union_property_not_all_present")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type Animal = {tag: "Cat", meow: boolean} | {tag: "Dog", woof: boolean}
|
|
function f(t: Animal)
|
|
t.tag = "Dog"
|
|
end
|
|
)");
|
|
|
|
// this should fail because `t` may be a `Cat` variant, and `"Dog"` is not a subtype of `"Cat"`.
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
|
|
CannotAssignToNever* tm = get<CannotAssignToNever>(result.errors[0]);
|
|
REQUIRE(tm);
|
|
|
|
CHECK(builtinTypes->stringType == tm->rhsType);
|
|
CHECK(CannotAssignToNever::Reason::PropertyNarrowed == tm->reason);
|
|
REQUIRE(tm->cause.size() == 2);
|
|
CHECK("\"Cat\"" == toString(tm->cause[0]));
|
|
CHECK("\"Dog\"" == toString(tm->cause[1]));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "mymovie_read_write_tables_bug")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type MockedResponseBody = string | (() -> MockedResponseBody)
|
|
type MockedResponse = { type: 'body', body: MockedResponseBody } | { type: 'error' }
|
|
|
|
local function mockedResponseToHttpResponse(mockedResponse: MockedResponse)
|
|
assert(mockedResponse.type == 'body', 'Mocked response is not a body')
|
|
if typeof(mockedResponse.body) == 'string' then
|
|
else
|
|
return mockedResponseToHttpResponse(mockedResponse)
|
|
end
|
|
end
|
|
)");
|
|
|
|
// we're primarily interested in knowing that this does not crash.
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "mymovie_read_write_tables_bug_2")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type MockedResponse = { type: 'body' } | { type: 'error' }
|
|
|
|
local function mockedResponseToHttpResponse(mockedResponse: MockedResponse)
|
|
assert(mockedResponse.type == 'body', 'Mocked response is not a body')
|
|
|
|
if typeof(mockedResponse.body) == 'string' then
|
|
elseif typeof(mockedResponse.body) == 'table' then
|
|
else
|
|
return mockedResponseToHttpResponse(mockedResponse)
|
|
end
|
|
end
|
|
)");
|
|
|
|
// we're primarily interested in knowing that this does not crash.
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "instantiated_metatable_frozen_table_clone_mutation")
|
|
{
|
|
fileResolver.source["game/worker"] = R"(
|
|
type WorkerImpl<T..., R...> = {
|
|
destroy: (self: Worker<T..., R...>) -> boolean,
|
|
}
|
|
|
|
type WorkerProps = { id: number }
|
|
|
|
export type Worker<T..., R...> = typeof(setmetatable({} :: WorkerProps, {} :: WorkerImpl<T..., R...>))
|
|
|
|
return {}
|
|
)";
|
|
|
|
fileResolver.source["game/library"] = R"(
|
|
local Worker = require(game.worker)
|
|
|
|
export type Worker<T..., R...> = Worker.Worker<T..., R...>
|
|
|
|
return {}
|
|
)";
|
|
|
|
CheckResult result = frontend.check("game/library");
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "setprop_on_a_mutating_local_in_both_loops_and_functions")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local _ = 5
|
|
|
|
while (_) do
|
|
_._ = nil
|
|
function _()
|
|
_ = nil
|
|
end
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "cant_index_this")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local a: number = 9
|
|
a[18] = "tomfoolery"
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
|
|
NotATable* notATable = get<NotATable>(result.errors[0]);
|
|
REQUIRE(notATable);
|
|
|
|
CHECK("number" == toString(notATable->ty));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "setindexer_multiple_tables_intersection")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauSolverV2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
local function f(t: { [string]: number } & { [thread]: boolean }, x)
|
|
local k = "a"
|
|
t[k] = x
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(2, result);
|
|
CHECK("({ [string]: number } & { [thread]: boolean }, never) -> ()" == toString(requireType("f")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "insert_a_and_f_of_a_into_table_res_in_a_loop")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function f(t)
|
|
local res = {}
|
|
|
|
for k, a in t do
|
|
res[k] = f(a)
|
|
res[k] = a
|
|
end
|
|
end
|
|
)");
|
|
|
|
if (FFlag::LuauSolverV2)
|
|
{
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK(get<FunctionExitsWithoutReturning>(result.errors[0]));
|
|
}
|
|
else
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "ipairs_adds_an_unbounded_indexer")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
|
|
local a = {}
|
|
ipairs(a)
|
|
)");
|
|
|
|
// The old solver erroneously leaves a free type dangling here. The new
|
|
// solver does better.
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK("{unknown}" == toString(requireType("a"), {true}));
|
|
else
|
|
CHECK("{a}" == toString(requireType("a"), {true}));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "index_results_compare_to_nil")
|
|
{
|
|
CheckResult result = check(R"(
|
|
--!strict
|
|
|
|
function foo(tbl: {number})
|
|
if tbl[2] == nil then
|
|
print("foo")
|
|
end
|
|
|
|
if tbl[3] ~= nil then
|
|
print("bar")
|
|
end
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "fuzzer_normalization_preserves_tbl_scopes")
|
|
{
|
|
CheckResult result = check(R"(
|
|
Module 'l0':
|
|
do end
|
|
|
|
Module 'l1':
|
|
local _ = {n0=nil,}
|
|
if if nil then _ then
|
|
if nil and (_)._ ~= (_)._ then
|
|
do end
|
|
while _ do
|
|
_ = _
|
|
do end
|
|
end
|
|
end
|
|
do end
|
|
end
|
|
local l0
|
|
while _ do
|
|
_ = nil
|
|
(_[_])._ %= `{# _}{bit32.extract(# _,1)}`
|
|
end
|
|
|
|
)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "table_literal_inference_assert")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local buttons = {
|
|
buttons = {};
|
|
}
|
|
|
|
buttons.Button = {
|
|
call = nil;
|
|
lightParts = nil;
|
|
litPropertyOverrides = nil;
|
|
model = nil;
|
|
pivot = nil;
|
|
unlitPropertyOverrides = nil;
|
|
}
|
|
buttons.Button.__index = buttons.Button
|
|
|
|
local lightFuncs: { (self: types.Button, lit: boolean) -> nil } = {
|
|
['\x00'] = function(self: types.Button, lit: boolean)
|
|
end;
|
|
}
|
|
)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "metatable_table_assertion_crash")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local NexusInstance = {}
|
|
function NexusInstance:__InitMetaMethods(): ()
|
|
local Metatable = {}
|
|
local OriginalIndexTable = getmetatable(self).__index
|
|
setmetatable(self, Metatable)
|
|
|
|
Metatable.__newindex = function(_, Index: string, Value: any): ()
|
|
--Return if the new and old values are the same.
|
|
if self[Index] == Value then
|
|
end
|
|
end
|
|
end
|
|
)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "table::insert_should_not_report_errors_when_correct_overload_is_picked")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type cs = { GetTagged : (cs, string) -> any}
|
|
local destroyQueue: {any} = {} -- pair of (time, coin)
|
|
local tick : () -> any
|
|
local CS : cs
|
|
local DESTROY_DELAY
|
|
local function SpawnCoin()
|
|
local spawns = CS:GetTagged('CoinSpawner')
|
|
local n : any
|
|
local StartPos = spawns[n].CFrame
|
|
local Coin = script.Coin:Clone()
|
|
Coin.CFrame = StartPos
|
|
Coin.Parent = workspace.Coins
|
|
|
|
table.insert(destroyQueue, {tick() + DESTROY_DELAY, Coin})
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "indexing_branching_table")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauAcceptIndexingTableUnionsIntersections, true};
|
|
|
|
CheckResult result = check(R"(
|
|
local test = if true then { "meow", "woof" } else { 4, 81 }
|
|
local test2 = test[1]
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
// unfortunate type duplication in the union
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK("number | string | string" == toString(requireType("test2")));
|
|
else
|
|
CHECK("number | string" == toString(requireType("test2")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "indexing_branching_table2")
|
|
{
|
|
ScopedFastFlag sff{FFlag::LuauAcceptIndexingTableUnionsIntersections, true};
|
|
|
|
CheckResult result = check(R"(
|
|
local test = if true then {} else {}
|
|
local test2 = test[1]
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
// unfortunate type duplication in the union
|
|
if (FFlag::LuauSolverV2)
|
|
CHECK("unknown | unknown" == toString(requireType("test2")));
|
|
else
|
|
CHECK("any" == toString(requireType("test2")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "length_of_array_is_number")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function TestFunc(ranges: {number}): number
|
|
if true then
|
|
ranges = {} :: {number}
|
|
end
|
|
local numRanges: number = #ranges
|
|
return numRanges
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_SUITE_END();
|