a40bada91a
This applies clang-format to the std::string unit tests in preparation for landing https://reviews.llvm.org/D140550. Differential Revision: https://reviews.llvm.org/D140612
108 lines
2.9 KiB
C++
108 lines
2.9 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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// constexpr const_iterator rend() const;
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#include <string_view>
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#include <cassert>
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#include <cstddef>
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#include "test_macros.h"
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template <class S>
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void test(S s) {
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const S& cs = s;
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typename S::reverse_iterator e = s.rend();
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typename S::const_reverse_iterator ce1 = cs.rend();
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typename S::const_reverse_iterator ce2 = s.crend();
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if (s.empty()) {
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assert(e == s.rbegin());
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assert(ce1 == cs.rbegin());
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assert(ce2 == s.rbegin());
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} else {
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assert(e != s.rbegin());
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assert(ce1 != cs.rbegin());
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assert(ce2 != s.rbegin());
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}
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assert(static_cast<std::size_t>(e - s.rbegin()) == s.size());
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assert(static_cast<std::size_t>(ce1 - cs.rbegin()) == cs.size());
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assert(static_cast<std::size_t>(ce2 - s.crbegin()) == s.size());
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assert(e == ce1);
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assert(e == ce2);
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assert(ce1 == ce2);
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}
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int main(int, char**) {
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typedef std::string_view string_view;
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#ifndef TEST_HAS_NO_CHAR8_T
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typedef std::u8string_view u8string_view;
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#endif
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typedef std::u16string_view u16string_view;
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typedef std::u32string_view u32string_view;
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test(string_view());
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test(u16string_view());
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test(u32string_view());
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test(string_view("123"));
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#ifndef TEST_HAS_NO_CHAR8_T
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test(u8string_view{u8"123"});
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#endif
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#if TEST_STD_VER >= 11
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test(u16string_view{u"123"});
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test(u32string_view{U"123"});
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#endif
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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typedef std::wstring_view wstring_view;
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test(wstring_view());
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test(wstring_view(L"123"));
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#endif
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#if TEST_STD_VER > 14
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{
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constexpr string_view sv{"123", 3};
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# ifndef TEST_HAS_NO_CHAR8_T
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constexpr u8string_view u8sv{u8"123", 3};
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# endif
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constexpr u16string_view u16sv{u"123", 3};
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constexpr u32string_view u32sv{U"123", 3};
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static_assert(*--sv.rend() == sv[0], "");
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# ifndef TEST_HAS_NO_CHAR8_T
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static_assert(*--u8sv.rend() == u8sv[0], "");
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# endif
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static_assert(*--u16sv.rend() == u16sv[0], "");
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static_assert(*--u32sv.rend() == u32sv[0], "");
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static_assert(*--sv.crend() == sv[0], "");
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# ifndef TEST_HAS_NO_CHAR8_T
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static_assert(*--u8sv.crend() == u8sv[0], "");
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# endif
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static_assert(*--u16sv.crend() == u16sv[0], "");
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static_assert(*--u32sv.crend() == u32sv[0], "");
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# ifndef TEST_HAS_NO_WIDE_CHARACTERS
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{
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constexpr wstring_view wsv{L"123", 3};
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static_assert(*--wsv.rend() == wsv[0], "");
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static_assert(*--wsv.crend() == wsv[0], "");
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}
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# endif
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}
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#endif // TEST_STD_VER > 14
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return 0;
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}
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