56 lines
1.7 KiB
C++
56 lines
1.7 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: c++03, c++11, c++14, c++17
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// <string_view>
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// template <contiguous_iterator _It, sized_sentinel_for<_It> _End>
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// basic_string_view(_It, _End) -> basic_string_view<iter_value_t<_It>>;
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#include <string_view>
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#include <cassert>
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#include "make_string.h"
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#include "test_macros.h"
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#include "test_iterators.h"
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template<class It, class Sentinel, class CharT>
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constexpr void test_ctad(std::basic_string_view<CharT> val) {
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auto sv = std::basic_string_view(It(val.data()), Sentinel(It(val.data() + val.size())));
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ASSERT_SAME_TYPE(decltype(sv), std::basic_string_view<CharT>);
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assert(sv.data() == val.data());
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assert(sv.size() == val.size());
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}
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template<class CharT>
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constexpr void test_with_char() {
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const auto val = MAKE_STRING_VIEW(CharT, "test");
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test_ctad<CharT*, CharT*>(val);
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test_ctad<CharT*, const CharT*>(val);
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test_ctad<const CharT*, CharT*>(val);
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test_ctad<const CharT*, sized_sentinel<const CharT*>>(val);
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test_ctad<contiguous_iterator<const CharT*>, contiguous_iterator<const CharT*>>(val);
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test_ctad<contiguous_iterator<const CharT*>, sized_sentinel<contiguous_iterator<const CharT*>>>(val);
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}
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constexpr void test() {
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test_with_char<char>();
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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test_with_char<wchar_t>();
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#endif
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test_with_char<char8_t>();
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test_with_char<char16_t>();
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test_with_char<char32_t>();
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}
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int main(int, char**) {
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test();
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return 0;
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}
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