luau/tests/Error.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 "Luau/Error.h"
#include "Fixture.h"
#include "doctest.h"
using namespace Luau;
LUAU_FASTFLAG(LuauSolverV2)
TEST_SUITE_BEGIN("ErrorTests");
TEST_CASE("TypeError_code_should_return_nonzero_code")
{
auto e = TypeError{{{0, 0}, {0, 1}}, UnknownSymbol{"Foo"}};
CHECK_GE(e.code(), 1000);
}
TEST_CASE_FIXTURE(BuiltinsFixture, "metatable_names_show_instead_of_tables")
{
frontend.options.retainFullTypeGraphs = false;
CheckResult result = check(R"(
--!strict
local Account = {}
Account.__index = Account
function Account.deposit(self: Account, x: number)
self.balance += x
end
type Account = typeof(setmetatable({} :: { balance: number }, Account))
local x: Account = 5
)");
LUAU_REQUIRE_ERROR_COUNT(1, result);
CHECK_EQ("Type 'number' could not be converted into 'Account'", toString(result.errors[0]));
}
TEST_CASE_FIXTURE(BuiltinsFixture, "binary_op_type_function_errors")
{
frontend.options.retainFullTypeGraphs = false;
CheckResult result = check(R"(
--!strict
local x = 1 + "foo"
)");
LUAU_REQUIRE_ERROR_COUNT(1, result);
if (FFlag::LuauSolverV2)
CHECK_EQ(
"Operator '+' could not be applied to operands of types number and string; there is no corresponding overload for __add",
toString(result.errors[0])
);
else
CHECK_EQ("Type 'string' could not be converted into 'number'", toString(result.errors[0]));
}
TEST_CASE_FIXTURE(BuiltinsFixture, "unary_op_type_function_errors")
{
frontend.options.retainFullTypeGraphs = false;
CheckResult result = check(R"(
--!strict
local x = -"foo"
)");
if (FFlag::LuauSolverV2)
{
LUAU_REQUIRE_ERROR_COUNT(2, result);
CHECK_EQ(
"Operator '-' could not be applied to operand of type string; there is no corresponding overload for __unm", toString(result.errors[0])
);
CHECK_EQ("Type 'string' could not be converted into 'number'", toString(result.errors[1]));
}
else
{
LUAU_REQUIRE_ERROR_COUNT(1, result);
CHECK_EQ("Type 'string' could not be converted into 'number'", toString(result.errors[0]));
}
}
TEST_SUITE_END();