7149bb7068
The libc++ test suite has a lot of old Lit features used to XFAIL tests and mark them as UNSUPPORTED. Many of them are to workaround problems on old compilers or old platforms. As time goes by, it is good to go and clean those up to simplify the configuration of the test suite, and also to reflect the testing reality. It's not useful to have markup that gives the impression that e.g. clang-3.3 is supported, when we don't really test on it anymore (and hence several new tests probably don't have the necessary markup on them).
74 lines
2.8 KiB
C++
74 lines
2.8 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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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: c++98, c++03, c++11
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// Note: libc++ supports string_view before C++17, but literals were introduced in C++14
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#include <string_view>
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#include <cassert>
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#include "test_macros.h"
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#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
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typedef std::u8string_view u8string_view;
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#else
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typedef std::string_view u8string_view;
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#endif
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int main(int, char**)
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{
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using namespace std::literals::string_view_literals;
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static_assert ( std::is_same<decltype( "Hi"sv), std::string_view>::value, "" );
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static_assert ( std::is_same<decltype( u8"Hi"sv), u8string_view>::value, "" );
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static_assert ( std::is_same<decltype( L"Hi"sv), std::wstring_view>::value, "" );
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static_assert ( std::is_same<decltype( u"Hi"sv), std::u16string_view>::value, "" );
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static_assert ( std::is_same<decltype( U"Hi"sv), std::u32string_view>::value, "" );
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std::string_view foo;
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std::wstring_view Lfoo;
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u8string_view u8foo;
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std::u16string_view ufoo;
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std::u32string_view Ufoo;
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foo = ""sv; assert( foo.size() == 0);
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u8foo = u8""sv; assert(u8foo.size() == 0);
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Lfoo = L""sv; assert( Lfoo.size() == 0);
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ufoo = u""sv; assert( ufoo.size() == 0);
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Ufoo = U""sv; assert( Ufoo.size() == 0);
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foo = " "sv; assert( foo.size() == 1);
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u8foo = u8" "sv; assert(u8foo.size() == 1);
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Lfoo = L" "sv; assert( Lfoo.size() == 1);
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ufoo = u" "sv; assert( ufoo.size() == 1);
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Ufoo = U" "sv; assert( Ufoo.size() == 1);
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foo = "ABC"sv; assert( foo == "ABC"); assert( foo == std::string_view ( "ABC"));
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u8foo = u8"ABC"sv; assert(u8foo == u8"ABC"); assert(u8foo == u8string_view (u8"ABC"));
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Lfoo = L"ABC"sv; assert( Lfoo == L"ABC"); assert( Lfoo == std::wstring_view ( L"ABC"));
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ufoo = u"ABC"sv; assert( ufoo == u"ABC"); assert( ufoo == std::u16string_view( u"ABC"));
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Ufoo = U"ABC"sv; assert( Ufoo == U"ABC"); assert( Ufoo == std::u32string_view( U"ABC"));
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static_assert( "ABC"sv.size() == 3, "");
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static_assert(u8"ABC"sv.size() == 3, "");
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static_assert( L"ABC"sv.size() == 3, "");
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static_assert( u"ABC"sv.size() == 3, "");
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static_assert( U"ABC"sv.size() == 3, "");
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static_assert(noexcept( "ABC"sv), "");
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static_assert(noexcept(u8"ABC"sv), "");
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static_assert(noexcept( L"ABC"sv), "");
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static_assert(noexcept( u"ABC"sv), "");
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static_assert(noexcept( U"ABC"sv), "");
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return 0;
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}
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