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74 lines
2.4 KiB
C++
74 lines
2.4 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, class Allocator>
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// constexpr bool operator<=(const charT* lhs, basic_string_wiew<charT,traits> rhs);
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// template<class charT, class traits, class Allocator>
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// constexpr bool operator<=(basic_string_wiew<charT,traits> lhs, const charT* 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 typename S::value_type* 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(""), true, true);
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test("", S("abcde"), true, false);
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test("", S("abcdefghij"), true, false);
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test("", S("abcdefghijklmnopqrst"), true, false);
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test("abcde", S(""), false, true);
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test("abcde", S("abcde"), true, true);
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test("abcde", S("abcdefghij"), true, false);
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test("abcde", S("abcdefghijklmnopqrst"), true, false);
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test("abcdefghij", S(""), false, true);
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test("abcdefghij", S("abcde"), false, true);
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test("abcdefghij", S("abcdefghij"), true, true);
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test("abcdefghij", S("abcdefghijklmnopqrst"), true, false);
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test("abcdefghijklmnopqrst", S(""), false, true);
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test("abcdefghijklmnopqrst", S("abcde"), false, true);
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test("abcdefghijklmnopqrst", S("abcdefghij"), false, true);
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test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), true, true);
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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 <= "", "" );
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static_assert ( "" <= sv1, "" );
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static_assert ( sv1 <= "abcde", "" );
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static_assert (!("abcde" <= sv1), "" );
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static_assert (!(sv2 <= ""), "" );
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static_assert ( "" <= sv2, "" );
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static_assert ( sv2 <= "abcde", "" );
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static_assert ( "abcde" <= sv2, "" );
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static_assert ( sv2 <= "abcde0", "" );
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static_assert (!("abcde0" <= sv2), "" );
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}
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#endif
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return 0;
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}
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