50 lines
1.3 KiB
C++
50 lines
1.3 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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// <string>
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// template<> struct char_traits<char32_t>
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// static char_type* move(char_type* s1, const char_type* s2, size_t n);
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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TEST_CONSTEXPR_CXX20 bool test()
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{
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#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
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char32_t s1[] = {1, 2, 3};
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assert(std::char_traits<char32_t>::move(s1, s1+1, 2) == s1);
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assert(s1[0] == char32_t(2));
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assert(s1[1] == char32_t(3));
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assert(s1[2] == char32_t(3));
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s1[2] = char32_t(0);
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assert(std::char_traits<char32_t>::move(s1+1, s1, 2) == s1+1);
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assert(s1[0] == char32_t(2));
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assert(s1[1] == char32_t(2));
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assert(s1[2] == char32_t(3));
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assert(std::char_traits<char32_t>::move(NULL, s1, 0) == NULL);
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assert(std::char_traits<char32_t>::move(s1, NULL, 0) == s1);
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#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
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return true;
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}
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int main(int, char**)
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{
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test();
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#if TEST_STD_VER > 17
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static_assert(test());
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#endif
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return 0;
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}
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