luau/tests/VisitType.test.cpp
vegorov-rbx d518d14b92
Sync to upstream/release/640 (#1374)
### What's new

* Fixed many of the false positive errors in indexing of table unions
and table intersections
* It is now possible to run custom checks over Luau AST during
typechecking by setting `customModuleCheck` in `FrontendOptions`
* Fixed codegen issue on arm, where number->vector cast could corrupt
that number value for the next time it's read

### New Solver

* `error` type now behaves as the bottom type during subtyping checks
* Fixed the scope that is used in subtyping with generic types
* Fixed `astOriginalCallTypes` table often used by LSP to match the old
solver

---

### Internal Contributors

Co-authored-by: Aaron Weiss <aaronweiss@roblox.com>
Co-authored-by: Andy Friesen <afriesen@roblox.com>
Co-authored-by: Vighnesh Vijay <vvijay@roblox.com>
Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
2024-08-23 09:35:30 -07:00

72 lines
1.8 KiB
C++

// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
#include "Fixture.h"
#include "Luau/RecursionCounter.h"
#include "doctest.h"
using namespace Luau;
LUAU_FASTINT(LuauVisitRecursionLimit);
LUAU_FASTFLAG(DebugLuauDeferredConstraintResolution)
TEST_SUITE_BEGIN("VisitType");
TEST_CASE_FIXTURE(Fixture, "throw_when_limit_is_exceeded")
{
if (FFlag::DebugLuauDeferredConstraintResolution)
{
CheckResult result = check(R"(
local t : {a: {b: {c: {d: {e: boolean}}}}}
)");
ScopedFastInt sfi{FInt::LuauVisitRecursionLimit, 3};
TypeId tType = requireType("t");
CHECK_THROWS_AS(toString(tType), RecursionLimitException);
}
else
{
ScopedFastInt sfi{FInt::LuauVisitRecursionLimit, 3};
CheckResult result = check(R"(
local t : {a: {b: {c: {d: {e: boolean}}}}}
)");
TypeId tType = requireType("t");
CHECK_THROWS_AS(toString(tType), RecursionLimitException);
}
}
TEST_CASE_FIXTURE(Fixture, "dont_throw_when_limit_is_high_enough")
{
ScopedFastInt sfi{FInt::LuauVisitRecursionLimit, 8};
CheckResult result = check(R"(
local t : {a: {b: {c: {d: {e: boolean}}}}}
)");
TypeId tType = requireType("t");
(void)toString(tType);
}
TEST_CASE_FIXTURE(Fixture, "some_free_types_do_not_have_bounds")
{
Type t{FreeType{TypeLevel{}}};
(void)toString(&t);
}
TEST_CASE_FIXTURE(Fixture, "some_free_types_have_bounds")
{
ScopedFastFlag sff{FFlag::DebugLuauDeferredConstraintResolution, true};
Scope scope{builtinTypes->anyTypePack};
Type t{FreeType{&scope, builtinTypes->neverType, builtinTypes->numberType}};
CHECK("('a <: number)" == toString(&t));
}
TEST_SUITE_END();