luau/tests/TypeInfer.negations.test.cpp
vegorov-rbx 4a2e8013c7
Sync to upstream/release/560 (#810)
* For autocomplete, additional information is included in Scope for type
alias name locations and names of imported modules
* Improved autocomplete suggestions in 'for' and 'while' loop headers
* String match functions return types are now optional strings and
numbers because match is not guaranteed at runtime
* Fixed build issue on gcc 11 and up (Fixes
https://github.com/Roblox/luau/issues/806)
2023-01-20 12:27:03 -08:00

50 lines
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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 "doctest.h"
#include "Luau/Common.h"
#include "ScopedFlags.h"
using namespace Luau;
namespace
{
struct NegationFixture : Fixture
{
TypeArena arena;
NegationFixture()
{
registerHiddenTypes(&frontend);
}
};
} // namespace
TEST_SUITE_BEGIN("Negations");
TEST_CASE_FIXTURE(NegationFixture, "negated_string_is_a_subtype_of_string")
{
CheckResult result = check(R"(
function foo(arg: string) end
local a: string & Not<"Hello">
foo(a)
)");
LUAU_REQUIRE_NO_ERRORS(result);
}
TEST_CASE_FIXTURE(NegationFixture, "string_is_not_a_subtype_of_negated_string")
{
CheckResult result = check(R"(
function foo(arg: string & Not<"hello">) end
local a: string
foo(a)
)");
LUAU_REQUIRE_ERROR_COUNT(1, result);
}
TEST_SUITE_END();