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Tests: Add test for supported operation type traits

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Daniel Bertalan 2021-07-02 20:23:35 +02:00 committed by Ali Mohammad Pur
parent 84ddecae8a
commit 9323d459b4
Notes: sideshowbarker 2024-07-18 10:31:18 +09:00 
Author: https://github.com/BertalanD
Commit: https://github.com/SerenityOS/serenity/commit/9323d459b4d
Pull-request: https://github.com/SerenityOS/serenity/pull/8391
Reviewed-by: https://github.com/alimpfard
1 changed files with 134 additions and 1 deletions
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135
Tests/AK/TestTypeTraits.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2020, the SerenityOS developers.
* Copyright (c) 2020-2021, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -33,6 +33,12 @@
STATIC_EXPECT_EQ(trait<A>, B); \
})
#define EXPECT_VARIADIC_TRAIT_TRUE(trait, ...) \
static_assert(trait<__VA_ARGS__>)
#define EXPECT_VARIADIC_TRAIT_FALSE(trait, ...) \
static_assert(!trait<__VA_ARGS__>)
struct Empty {
};
@ -113,3 +119,130 @@ TEST_CASE(RemoveCVReference)
EXPECT_EQ_WITH_TRAIT(RemoveCVReference, TestTypeList, ResultTypeList);
}
TEST_CASE(AddReference)
{
STATIC_EXPECT_EQ(AddLvalueReference<int>, int&);
STATIC_EXPECT_EQ(AddLvalueReference<int&>, int&);
STATIC_EXPECT_EQ(AddLvalueReference<int&&>, int&);
STATIC_EXPECT_EQ(AddRvalueReference<int>, int&&);
STATIC_EXPECT_EQ(AddRvalueReference<int&>, int&);
STATIC_EXPECT_EQ(AddRvalueReference<int&&>, int&&);
STATIC_EXPECT_EQ(AddLvalueReference<void>, void);
}
TEST_CASE(IsConvertible)
{
struct A {
};
struct B {
B(A);
};
struct C {
A a;
operator A() { return a; };
};
struct D {
};
EXPECT_VARIADIC_TRAIT_TRUE(IsConvertible, A, B);
EXPECT_VARIADIC_TRAIT_FALSE(IsConvertible, B, A);
EXPECT_VARIADIC_TRAIT_TRUE(IsConvertible, C, A);
EXPECT_VARIADIC_TRAIT_FALSE(IsConvertible, A, C);
EXPECT_VARIADIC_TRAIT_FALSE(IsConvertible, D, A);
EXPECT_VARIADIC_TRAIT_FALSE(IsConvertible, A, D);
}
TEST_CASE(IsAssignable)
{
EXPECT_VARIADIC_TRAIT_FALSE(IsAssignable, int, int);
EXPECT_VARIADIC_TRAIT_TRUE(IsAssignable, int&, int);
EXPECT_VARIADIC_TRAIT_FALSE(IsAssignable, int, void);
struct A {
};
EXPECT_TRAIT_TRUE(IsCopyAssignable, A);
EXPECT_TRAIT_TRUE(IsTriviallyCopyAssignable, A);
EXPECT_TRAIT_TRUE(IsMoveAssignable, A);
EXPECT_TRAIT_TRUE(IsTriviallyMoveAssignable, A);
struct B {
B& operator=(const B&) { return *this; }
B& operator=(B&&) { return *this; }
};
EXPECT_TRAIT_TRUE(IsCopyAssignable, B);
EXPECT_TRAIT_FALSE(IsTriviallyCopyAssignable, B);
EXPECT_TRAIT_TRUE(IsMoveAssignable, B);
EXPECT_TRAIT_FALSE(IsTriviallyMoveAssignable, B);
struct C {
C& operator=(const C&) = delete;
C& operator=(C&&) = delete;
};
EXPECT_TRAIT_FALSE(IsCopyAssignable, C);
EXPECT_TRAIT_FALSE(IsTriviallyCopyAssignable, C);
EXPECT_TRAIT_FALSE(IsMoveAssignable, C);
EXPECT_TRAIT_FALSE(IsTriviallyMoveAssignable, C);
}
TEST_CASE(IsConstructible)
{
struct A {
};
EXPECT_TRAIT_TRUE(IsCopyConstructible, A);
EXPECT_TRAIT_TRUE(IsTriviallyCopyConstructible, A);
EXPECT_TRAIT_TRUE(IsMoveConstructible, A);
EXPECT_TRAIT_TRUE(IsTriviallyMoveConstructible, A);
struct B {
B(const B&)
{
}
B(B&&)
{
}
};
EXPECT_TRAIT_TRUE(IsCopyConstructible, B);
EXPECT_TRAIT_FALSE(IsTriviallyCopyConstructible, B);
EXPECT_TRAIT_TRUE(IsMoveConstructible, B);
EXPECT_TRAIT_FALSE(IsTriviallyMoveConstructible, B);
struct C {
C(const C&) = delete;
C(C&&) = delete;
};
EXPECT_TRAIT_FALSE(IsCopyConstructible, C);
EXPECT_TRAIT_FALSE(IsTriviallyCopyConstructible, C);
EXPECT_TRAIT_FALSE(IsMoveConstructible, C);
EXPECT_TRAIT_FALSE(IsTriviallyMoveConstructible, C);
struct D {
D(int);
};
EXPECT_VARIADIC_TRAIT_TRUE(IsConstructible, D, int);
EXPECT_VARIADIC_TRAIT_TRUE(IsConstructible, D, char);
EXPECT_VARIADIC_TRAIT_FALSE(IsConstructible, D, const char*);
EXPECT_VARIADIC_TRAIT_FALSE(IsConstructible, D, void);
}
TEST_CASE(IsDestructible)
{
struct A {
};
EXPECT_TRAIT_TRUE(IsDestructible, A);
EXPECT_TRAIT_TRUE(IsTriviallyDestructible, A);
struct B {
~B()
{
}
};
EXPECT_TRAIT_TRUE(IsDestructible, B);
EXPECT_TRAIT_FALSE(IsTriviallyDestructible, B);
struct C {
~C() = delete;
};
EXPECT_TRAIT_FALSE(IsDestructible, C);
EXPECT_TRAIT_FALSE(IsTriviallyDestructible, C);
}