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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
// <string_view>
// constexpr basic_string_view () noexcept;
#include <string_view>
#include <cassert>
#include "test_macros.h"
template<typename T>
void test () {
#if TEST_STD_VER > 11
{
ASSERT_NOEXCEPT(T());
constexpr T sv1;
static_assert ( sv1.size() == 0, "" );
static_assert ( sv1.empty(), "");
}
#endif
{
T sv1;
assert ( sv1.size() == 0 );
assert ( sv1.empty());
}
}
int main(int, char**) {
test<std::string_view> ();
test<std::u16string_view> ();
#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
test<std::u8string_view> ();
#endif
test<std::u32string_view> ();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test<std::wstring_view> ();
#endif
return 0;
}
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