mirror of
https://github.com/luau-lang/luau.git
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366 lines
11 KiB
C++
366 lines
11 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/TypeInfer.h"
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#include "Luau/TypeVar.h"
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#include "Fixture.h"
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#include "doctest.h"
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using namespace Luau;
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TEST_SUITE_BEGIN("DefinitionTests");
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TEST_CASE_FIXTURE(Fixture, "definition_file_simple")
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{
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loadDefinition(R"(
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declare foo: number
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declare function bar(x: number): string
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declare foo2: typeof(foo)
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)");
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TypeId globalFooTy = getGlobalBinding(frontend, "foo");
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CHECK_EQ(toString(globalFooTy), "number");
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TypeId globalBarTy = getGlobalBinding(frontend, "bar");
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CHECK_EQ(toString(globalBarTy), "(number) -> string");
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TypeId globalFoo2Ty = getGlobalBinding(frontend, "foo2");
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CHECK_EQ(toString(globalFoo2Ty), "number");
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CheckResult result = check(R"(
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local x: number = foo - 1
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local y: string = bar(x)
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local z: number | string = x
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z = y
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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, "definition_file_loading")
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{
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loadDefinition(R"(
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declare foo: number
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export type Asdf = number | string
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declare function bar(x: number): string
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declare foo2: typeof(foo)
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declare function var(...: any): string
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)");
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TypeId globalFooTy = getGlobalBinding(frontend, "foo");
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CHECK_EQ(toString(globalFooTy), "number");
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std::optional<TypeFun> globalAsdfTy = frontend.getGlobalScope()->lookupType("Asdf");
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REQUIRE(bool(globalAsdfTy));
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CHECK_EQ(toString(globalAsdfTy->type), "number | string");
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TypeId globalBarTy = getGlobalBinding(frontend, "bar");
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CHECK_EQ(toString(globalBarTy), "(number) -> string");
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TypeId globalFoo2Ty = getGlobalBinding(frontend, "foo2");
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CHECK_EQ(toString(globalFoo2Ty), "number");
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TypeId globalVarTy = getGlobalBinding(frontend, "var");
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CHECK_EQ(toString(globalVarTy), "(...any) -> string");
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CheckResult result = check(R"(
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local x: number = foo + 1
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local y: string = bar(x)
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local z: Asdf = x
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z = y
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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, "load_definition_file_errors_do_not_pollute_global_scope")
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{
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unfreeze(typeChecker.globalTypes);
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LoadDefinitionFileResult parseFailResult = loadDefinitionFile(typeChecker, typeChecker.globalScope, R"(
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declare foo
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)",
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"@test");
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freeze(typeChecker.globalTypes);
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REQUIRE(!parseFailResult.success);
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std::optional<Binding> fooTy = tryGetGlobalBinding(frontend, "foo");
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CHECK(!fooTy.has_value());
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LoadDefinitionFileResult checkFailResult = loadDefinitionFile(typeChecker, typeChecker.globalScope, R"(
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local foo: string = 123
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declare bar: typeof(foo)
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)",
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"@test");
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REQUIRE(!checkFailResult.success);
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std::optional<Binding> barTy = tryGetGlobalBinding(frontend, "bar");
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CHECK(!barTy.has_value());
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}
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TEST_CASE_FIXTURE(Fixture, "definition_file_classes")
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{
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loadDefinition(R"(
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declare class Foo
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X: number
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function inheritance(self): number
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end
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declare class Bar extends Foo
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Y: number
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function foo(self, x: number): number
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function foo(self, x: string): string
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function __add(self, other: Bar): Bar
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end
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)");
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CheckResult result = check(R"(
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local x: Bar
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local prop: number = x.Y
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local inheritedProp: number = x.X
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local method: number = x:foo(1)
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local method2: string = x:foo("string")
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local metamethod: Bar = x + x
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local inheritedMethod: number = x:inheritance()
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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CHECK_EQ(toString(requireType("prop")), "number");
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CHECK_EQ(toString(requireType("inheritedProp")), "number");
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CHECK_EQ(toString(requireType("method")), "number");
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CHECK_EQ(toString(requireType("method2")), "string");
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CHECK_EQ(toString(requireType("metamethod")), "Bar");
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CHECK_EQ(toString(requireType("inheritedMethod")), "number");
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}
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TEST_CASE_FIXTURE(Fixture, "class_definitions_cannot_overload_non_function")
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{
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unfreeze(typeChecker.globalTypes);
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LoadDefinitionFileResult result = loadDefinitionFile(typeChecker, typeChecker.globalScope, R"(
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declare class A
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X: number
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X: string
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end
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)",
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"@test");
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freeze(typeChecker.globalTypes);
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REQUIRE(!result.success);
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CHECK_EQ(result.parseResult.errors.size(), 0);
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REQUIRE(bool(result.module));
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REQUIRE_EQ(result.module->errors.size(), 1);
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GenericError* ge = get<GenericError>(result.module->errors[0]);
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REQUIRE(ge);
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CHECK_EQ("Cannot overload non-function class member 'X'", ge->message);
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}
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TEST_CASE_FIXTURE(Fixture, "class_definitions_cannot_extend_non_class")
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{
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unfreeze(typeChecker.globalTypes);
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LoadDefinitionFileResult result = loadDefinitionFile(typeChecker, typeChecker.globalScope, R"(
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type NotAClass = {}
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declare class Foo extends NotAClass
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end
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)",
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"@test");
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freeze(typeChecker.globalTypes);
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REQUIRE(!result.success);
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CHECK_EQ(result.parseResult.errors.size(), 0);
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REQUIRE(bool(result.module));
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REQUIRE_EQ(result.module->errors.size(), 1);
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GenericError* ge = get<GenericError>(result.module->errors[0]);
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REQUIRE(ge);
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CHECK_EQ("Cannot use non-class type 'NotAClass' as a superclass of class 'Foo'", ge->message);
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}
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TEST_CASE_FIXTURE(Fixture, "no_cyclic_defined_classes")
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{
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unfreeze(typeChecker.globalTypes);
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LoadDefinitionFileResult result = loadDefinitionFile(typeChecker, typeChecker.globalScope, R"(
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declare class Foo extends Bar
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end
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declare class Bar extends Foo
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end
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)",
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"@test");
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freeze(typeChecker.globalTypes);
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REQUIRE(!result.success);
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}
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TEST_CASE_FIXTURE(Fixture, "declaring_generic_functions")
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{
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loadDefinition(R"(
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declare function f<a, b>(a: a, b: b): string
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declare function g<a..., b...>(...: a...): b...
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declare function h<a, b>(a: a, b: b): (b, a)
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)");
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CheckResult result = check(R"(
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local x = f(1, true)
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local y: number, z: string = g("foo", 123)
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local w, u = h(1, true)
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local f = f
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local g = g
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local h = h
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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CHECK_EQ(toString(requireType("x")), "string");
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CHECK_EQ(toString(requireType("w")), "boolean");
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CHECK_EQ(toString(requireType("u")), "number");
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CHECK_EQ(toString(requireType("f")), "<a, b>(a, b) -> string");
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CHECK_EQ(toString(requireType("g")), "<a..., b...>(a...) -> (b...)");
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CHECK_EQ(toString(requireType("h")), "<a, b>(a, b) -> (b, a)");
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}
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TEST_CASE_FIXTURE(Fixture, "class_definition_function_prop")
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{
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loadDefinition(R"(
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declare class Foo
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X: (number) -> string
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end
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)");
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CheckResult result = check(R"(
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local x: Foo
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local prop = x.X
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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CHECK_EQ(toString(requireType("prop")), "(number) -> string");
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}
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TEST_CASE_FIXTURE(Fixture, "definition_file_class_function_args")
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{
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loadDefinition(R"(
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declare class Foo
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function foo1(self, x: number): number
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function foo2(self, x: number, y: string): number
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y: (a: number, b: string) -> string
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end
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)");
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CheckResult result = check(R"(
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local x: Foo
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local methodRef1 = x.foo1
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local methodRef2 = x.foo2
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local prop = x.y
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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ToStringOptions opts;
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opts.functionTypeArguments = true;
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CHECK_EQ(toString(requireType("methodRef1"), opts), "(self: Foo, x: number) -> number");
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CHECK_EQ(toString(requireType("methodRef2"), opts), "(self: Foo, x: number, y: string) -> number");
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CHECK_EQ(toString(requireType("prop"), opts), "(a: number, b: string) -> string");
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}
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TEST_CASE_FIXTURE(Fixture, "definitions_documentation_symbols")
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{
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loadDefinition(R"(
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declare x: string
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export type Foo = string | number
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declare class Bar
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prop: string
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end
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declare y: {
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x: number,
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}
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)");
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std::optional<Binding> xBinding = typeChecker.globalScope->linearSearchForBinding("x");
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REQUIRE(bool(xBinding));
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// note: loadDefinition uses the @test package name.
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CHECK_EQ(xBinding->documentationSymbol, "@test/global/x");
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std::optional<TypeFun> fooTy = typeChecker.globalScope->lookupType("Foo");
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REQUIRE(bool(fooTy));
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CHECK_EQ(fooTy->type->documentationSymbol, "@test/globaltype/Foo");
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std::optional<TypeFun> barTy = typeChecker.globalScope->lookupType("Bar");
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REQUIRE(bool(barTy));
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CHECK_EQ(barTy->type->documentationSymbol, "@test/globaltype/Bar");
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ClassTypeVar* barClass = getMutable<ClassTypeVar>(barTy->type);
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REQUIRE(bool(barClass));
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REQUIRE_EQ(barClass->props.count("prop"), 1);
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CHECK_EQ(barClass->props["prop"].documentationSymbol, "@test/globaltype/Bar.prop");
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std::optional<Binding> yBinding = typeChecker.globalScope->linearSearchForBinding("y");
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REQUIRE(bool(yBinding));
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CHECK_EQ(yBinding->documentationSymbol, "@test/global/y");
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TableTypeVar* yTtv = getMutable<TableTypeVar>(yBinding->typeId);
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REQUIRE(bool(yTtv));
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REQUIRE_EQ(yTtv->props.count("x"), 1);
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CHECK_EQ(yTtv->props["x"].documentationSymbol, "@test/global/y.x");
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}
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TEST_CASE_FIXTURE(Fixture, "documentation_symbols_dont_attach_to_persistent_types")
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{
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loadDefinition(R"(
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export type Evil = string
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)");
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std::optional<TypeFun> ty = typeChecker.globalScope->lookupType("Evil");
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REQUIRE(bool(ty));
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CHECK_EQ(ty->type->documentationSymbol, std::nullopt);
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}
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TEST_CASE_FIXTURE(Fixture, "single_class_type_identity_in_global_types")
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{
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loadDefinition(R"(
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declare class Cls
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end
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declare GetCls: () -> (Cls)
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)");
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CheckResult result = check(R"(
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local s : Cls = GetCls()
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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, "class_definition_overload_metamethods")
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{
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loadDefinition(R"(
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declare class Vector3
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end
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declare class CFrame
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function __mul(self, other: CFrame): CFrame
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function __mul(self, other: Vector3): Vector3
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end
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declare function newVector3(): Vector3
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declare function newCFrame(): CFrame
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)");
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CheckResult result = check(R"(
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local base = newCFrame()
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local shouldBeCFrame = base * newCFrame()
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local shouldBeVector = base * newVector3()
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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CHECK_EQ(toString(requireType("shouldBeCFrame")), "CFrame");
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CHECK_EQ(toString(requireType("shouldBeVector")), "Vector3");
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}
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TEST_SUITE_END();
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