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67 lines
2.0 KiB
C++
67 lines
2.0 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<class charT, class traits>
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// constexpr bool operator<(basic_string_view<charT,traits> lhs,
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// basic_string_view<charT,traits> rhs);
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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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#include "constexpr_char_traits.hpp"
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template <class S>
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void
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test(const S& lhs, const S& rhs, bool x, bool y)
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{
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assert((lhs < rhs) == x);
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assert((rhs < lhs) == y);
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}
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int main(int, char**)
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{
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{
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typedef std::string_view S;
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test(S(""), S(""), false, false);
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test(S(""), S("abcde"), true, false);
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test(S(""), S("abcdefghij"), true, false);
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test(S(""), S("abcdefghijklmnopqrst"), true, false);
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test(S("abcde"), S(""), false, true);
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test(S("abcde"), S("abcde"), false, false);
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test(S("abcde"), S("abcdefghij"), true, false);
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test(S("abcde"), S("abcdefghijklmnopqrst"), true, false);
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test(S("abcdefghij"), S(""), false, true);
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test(S("abcdefghij"), S("abcde"), false, true);
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test(S("abcdefghij"), S("abcdefghij"), false, false);
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test(S("abcdefghij"), S("abcdefghijklmnopqrst"), true, false);
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test(S("abcdefghijklmnopqrst"), S(""), false, true);
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test(S("abcdefghijklmnopqrst"), S("abcde"), false, true);
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test(S("abcdefghijklmnopqrst"), S("abcdefghij"), false, true);
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test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false, false);
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}
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#if TEST_STD_VER > 11
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{
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typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
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constexpr SV sv1;
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constexpr SV sv2 { "abcde", 5 };
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static_assert (!(sv1 < sv1), "" );
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static_assert (!(sv2 < sv2), "" );
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static_assert ( sv1 < sv2, "" );
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static_assert (!(sv2 < sv1), "" );
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}
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#endif
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return 0;
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}
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