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Add add_lvalue_ref tests for a few function types, with a note why not more

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@255513 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2015-12-14 17:34:03 +00:00
parent 563647a240
commit 633fe505fe
1 changed files with 36 additions and 0 deletions
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36
test/std/utilities/meta/meta.trans/meta.trans.ref/add_lvalue_ref.pass.cpp
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@@ -22,6 +22,26 @@ void test_add_lvalue_reference()
#endif
}
template <class F>
void test_function0()
{
static_assert((std::is_same<typename std::add_lvalue_reference<F>::type, F&>::value), "");
#if _LIBCPP_STD_VER > 11
static_assert((std::is_same<std::add_lvalue_reference_t<F>, F&>::value), "");
#endif
}
template <class F>
void test_function1()
{
static_assert((std::is_same<typename std::add_lvalue_reference<F>::type, F>::value), "");
#if _LIBCPP_STD_VER > 11
static_assert((std::is_same<std::add_lvalue_reference_t<F>, F>::value), "");
#endif
}
struct Foo {};
int main()
{
test_add_lvalue_reference<void, void>();
@@ -31,4 +51,20 @@ int main()
test_add_lvalue_reference<const int&, const int&>();
test_add_lvalue_reference<int*, int*&>();
test_add_lvalue_reference<const int*, const int*&>();
// LWG 2101 specifically talks about add_lvalue_reference and functions.
// The term of art is "a referenceable type", which a cv- or ref-qualified function is not.
test_function0<void()>();
// test_function1<void() const>();
// test_function1<void() &>();
// test_function1<void() &&>();
// test_function1<void() const &>();
// test_function1<void() const &&>();
test_function0<void (Foo::*)()>();
// test_function1<void (Foo::*)() const>();
// test_function1<void (Foo::*)() &>();
// test_function1<void (Foo::*)() &&>();
// test_function1<void (Foo::*)() const &>();
// test_function1<void (Foo::*)() const &&>();
}