luau/tests/VisitType.test.cpp
aaron b23d43496b
Sync to upstream/release/641 (#1382)
### What's new

* Light update this week, mostly fast flag cleanups.

### New Solver

* Rename flag to enable new solver from
`DebugLuauDeferredConstraintResolution` to `LuauSolverV2`
* Added support for magic functions for the new type checker (as opposed
to the type inference component)
* Improved handling of `string.format` with magic function improvements
* Cleaning up some of the reported errors by the new type checker
* Minor refactoring of `TypeChecker2.cpp` that happens to make the diff
very hard to read.

---

### 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>

---------

Co-authored-by: Alexander McCord <amccord@roblox.com>
Co-authored-by: Andy Friesen <afriesen@roblox.com>
Co-authored-by: Vighnesh <vvijay@roblox.com>
Co-authored-by: Aviral Goel <agoel@roblox.com>
Co-authored-by: David Cope <dcope@roblox.com>
Co-authored-by: Lily Brown <lbrown@roblox.com>
Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
Co-authored-by: Junseo Yoo <jyoo@roblox.com>
2024-08-30 13:16:51 -07:00

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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 "Luau/RecursionCounter.h"
#include "doctest.h"
using namespace Luau;
LUAU_FASTINT(LuauVisitRecursionLimit);
LUAU_FASTFLAG(LuauSolverV2)
TEST_SUITE_BEGIN("VisitType");
TEST_CASE_FIXTURE(Fixture, "throw_when_limit_is_exceeded")
{
if (FFlag::LuauSolverV2)
{
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::LuauSolverV2, true};
Scope scope{builtinTypes->anyTypePack};
Type t{FreeType{&scope, builtinTypes->neverType, builtinTypes->numberType}};
CHECK("('a <: number)" == toString(&t));
}
TEST_SUITE_END();