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108 lines
3.7 KiB
C++
108 lines
3.7 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibTest/TestCase.h>
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#include <AK/StdLibExtras.h>
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#include <AK/TypeList.h>
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#define STATIC_EXPECT_EQ(lhs, rhs) \
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static_assert(IsSame<lhs, rhs>, "");
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#define STATIC_EXPECT_FALSE(Expression) \
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static_assert(!Expression, "");
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#define STATIC_EXPECT_TRUE(Expression) \
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static_assert(Expression, "");
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#define EXPECT_TRAIT_TRUE(trait, ...) \
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for_each_type<TypeList<__VA_ARGS__>>([]<typename T>(TypeWrapper<T>) { \
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STATIC_EXPECT_TRUE(trait<T>); \
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})
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#define EXPECT_TRAIT_FALSE(trait, ...) \
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for_each_type<TypeList<__VA_ARGS__>>([]<typename T>(TypeWrapper<T>) { \
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STATIC_EXPECT_FALSE(trait<T>); \
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})
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#define EXPECT_EQ_WITH_TRAIT(trait, ListA, ListB) \
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for_each_type_zipped<ListA, ListB>([]<typename A, typename B>(TypeWrapper<A>, TypeWrapper<B>) { \
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STATIC_EXPECT_EQ(trait<A>, B); \
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})
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struct Empty {
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};
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enum class Enummer : u8 {
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Dummmy,
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};
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TEST_CASE(FundamentalTypeClassification)
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{
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EXPECT_TRAIT_TRUE(IsVoid, void);
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EXPECT_TRAIT_FALSE(IsVoid, int, Empty, std::nullptr_t);
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EXPECT_TRAIT_TRUE(IsNullPointer, std::nullptr_t);
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EXPECT_TRAIT_FALSE(IsNullPointer, void, int, Empty, decltype(0));
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EXPECT_TRAIT_TRUE(IsFloatingPoint, float, double, long double);
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EXPECT_TRAIT_FALSE(IsFloatingPoint, int, Empty, std::nullptr_t, void);
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EXPECT_TRAIT_TRUE(IsArithmetic, float, double, long double, bool, size_t);
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EXPECT_TRAIT_TRUE(IsArithmetic, char, signed char, unsigned char, char8_t, char16_t, char32_t);
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EXPECT_TRAIT_TRUE(IsArithmetic, short, int, long, long long);
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EXPECT_TRAIT_TRUE(IsArithmetic, unsigned short, unsigned int, unsigned long, unsigned long long);
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EXPECT_TRAIT_FALSE(IsArithmetic, void, std::nullptr_t, Empty);
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EXPECT_TRAIT_TRUE(IsFundamental, void, std::nullptr_t);
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EXPECT_TRAIT_TRUE(IsFundamental, float, double, long double, bool, size_t);
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EXPECT_TRAIT_TRUE(IsFundamental, char, signed char, unsigned char, char8_t, char16_t, char32_t);
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EXPECT_TRAIT_TRUE(IsFundamental, short, int, long, long long);
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EXPECT_TRAIT_TRUE(IsFundamental, unsigned short, unsigned int, unsigned long, unsigned long long);
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EXPECT_TRAIT_FALSE(IsFundamental, Empty, int*, int&);
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EXPECT_TRAIT_FALSE(IsSigned, unsigned);
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EXPECT_TRAIT_FALSE(IsSigned, unsigned short);
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EXPECT_TRAIT_FALSE(IsSigned, unsigned char);
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EXPECT_TRAIT_FALSE(IsSigned, unsigned long);
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EXPECT_TRAIT_TRUE(IsSigned, int);
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EXPECT_TRAIT_TRUE(IsSigned, short);
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EXPECT_TRAIT_TRUE(IsSigned, long);
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EXPECT_TRAIT_TRUE(IsUnsigned, unsigned);
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EXPECT_TRAIT_TRUE(IsUnsigned, unsigned short);
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EXPECT_TRAIT_TRUE(IsUnsigned, unsigned char);
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EXPECT_TRAIT_TRUE(IsUnsigned, unsigned long);
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EXPECT_TRAIT_FALSE(IsUnsigned, int);
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EXPECT_TRAIT_FALSE(IsUnsigned, short);
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EXPECT_TRAIT_FALSE(IsUnsigned, long);
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EXPECT_TRAIT_TRUE(IsEnum, Enummer);
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EXPECT_TRAIT_FALSE(IsEnum, Empty);
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EXPECT_TRAIT_FALSE(IsEnum, int);
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EXPECT_TRAIT_FALSE(IsEnum, void);
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EXPECT_TRAIT_FALSE(IsEnum, std::nullptr_t);
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}
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TEST_CASE(AddConst)
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{
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// clang-format off
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using NoConstList = TypeList<int, const int, Empty, const Empty>;
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using YesConstList = TypeList<const int, const int, const Empty, const Empty>;
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// clang-format on
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EXPECT_EQ_WITH_TRAIT(AddConst, NoConstList, YesConstList);
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}
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TEST_CASE(UnderlyingType)
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{
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using Type = UnderlyingType<Enummer>;
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STATIC_EXPECT_EQ(Type, u8);
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}
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