8d3252a898
This implements the requirements for the container iterator requirements for array, deque, vector, and `vector<bool>`. Implements: - LWG3352 strong_equality isn't a thing Implements parts of: - P1614R2 The Mothership has Landed Fixes: https://github.com/llvm/llvm-project/issues/62486
86 lines
2.2 KiB
C++
86 lines
2.2 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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// class iterator
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#include <cassert>
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#include <concepts>
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#include <iterator>
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#include <string_view>
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#include "test_macros.h"
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#include "make_string.h"
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template <class CharT>
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TEST_CONSTEXPR_CXX14 void test_type() {
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using C = std::basic_string_view<CharT>;
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typename C::iterator ii1 = typename C::iterator(), ii2 = typename C::iterator();
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typename C::iterator ii4 = ii1;
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typename C::const_iterator cii = typename C::const_iterator();
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assert(ii1 == ii2);
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assert(ii1 == ii4);
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assert(ii1 == cii);
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assert(!(ii1 != ii2));
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assert(!(ii1 != cii));
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#if TEST_STD_VER >= 17
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C c = MAKE_STRING_VIEW(CharT, "abc");
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assert(c.begin() == std::begin(c));
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assert(c.rbegin() == std::rbegin(c));
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assert(c.cbegin() == std::cbegin(c));
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assert(c.crbegin() == std::crbegin(c));
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assert(c.end() == std::end(c));
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assert(c.rend() == std::rend(c));
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assert(c.cend() == std::cend(c));
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assert(c.crend() == std::crend(c));
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assert(std::begin(c) != std::end(c));
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assert(std::rbegin(c) != std::rend(c));
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assert(std::cbegin(c) != std::cend(c));
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assert(std::crbegin(c) != std::crend(c));
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#endif
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#if TEST_STD_VER >= 20
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// P1614 + LWG3352
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std::same_as<std::strong_ordering> decltype(auto) r1 = ii1 <=> ii2;
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assert(r1 == std::strong_ordering::equal);
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std::same_as<std::strong_ordering> decltype(auto) r2 = ii1 <=> ii2;
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assert(r2 == std::strong_ordering::equal);
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#endif
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}
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TEST_CONSTEXPR_CXX14 bool test() {
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test_type<char>();
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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test_type<wchar_t>();
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#endif
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#ifndef TEST_HAS_NO_CHAR8_T
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test_type<char8_t>();
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#endif
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test_type<char16_t>();
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test_type<char32_t>();
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return true;
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}
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int main(int, char**) {
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test();
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#if TEST_STD_VER >= 14
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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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