4fc502368a
`string_view` is supported all the way back to C++03 as an extension in `libc++`, and so many of the tests run in all standards modes for all vendors. This is unlikely desired by other standard library vendors using our test suite. So, disable the tests for vendors other than `libc++` in these older standards modes. Differential Revision: https://reviews.llvm.org/D126850
69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
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// <string_view>
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// template<class Allocator>
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// basic_string_view(const basic_string<_CharT, _Traits, Allocator>& _str) noexcept
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#include <string_view>
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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struct dummy_char_traits : public std::char_traits<char> {};
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template<typename CharT, typename Traits>
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void test ( const std::basic_string<CharT, Traits> &str ) {
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typedef std::basic_string_view<CharT, Traits> SV;
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ASSERT_NOEXCEPT(SV(str));
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SV sv1 ( str );
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assert ( sv1.size() == str.size());
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assert ( sv1.data() == str.data());
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}
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int main(int, char**) {
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test ( std::string("QBCDE") );
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test ( std::string("") );
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test ( std::string() );
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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test ( std::wstring(L"QBCDE") );
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test ( std::wstring(L"") );
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test ( std::wstring() );
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#endif
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#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
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test ( std::u8string{u8"QBCDE"} );
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test ( std::u8string{u8""} );
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test ( std::u8string{} );
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#endif
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#if TEST_STD_VER >= 11
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test ( std::u16string{u"QBCDE"} );
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test ( std::u16string{u""} );
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test ( std::u16string{} );
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test ( std::u32string{U"QBCDE"} );
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test ( std::u32string{U""} );
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test ( std::u32string{} );
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#endif
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test ( std::basic_string<char, dummy_char_traits>("QBCDE") );
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test ( std::basic_string<char, dummy_char_traits>("") );
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test ( std::basic_string<char, dummy_char_traits>() );
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return 0;
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}
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