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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <string>
// template<class charT, class traits>
// constexpr bool operator==(basic_string_view<charT,traits> lhs, const charT* rhs);
// template<class charT, class traits>
// constexpr bool operator==(const charT* lhs, basic_string_view<charT,traits> rhs);
#include <string_view>
#include <cassert>
#include "test_macros.h"
#include "constexpr_char_traits.hpp"
template <class S>
void
test(S lhs, const typename S::value_type* rhs, bool x)
{
assert((lhs == rhs) == x);
assert((rhs == lhs) == x);
}
int main(int, char**)
{
{
typedef std::string_view S;
test(S(""), "", true);
test(S(""), "abcde", false);
test(S(""), "abcdefghij", false);
test(S(""), "abcdefghijklmnopqrst", false);
test(S("abcde"), "", false);
test(S("abcde"), "abcde", true);
test(S("abcde"), "abcdefghij", false);
test(S("abcde"), "abcdefghijklmnopqrst", false);
test(S("abcdefghij"), "", false);
test(S("abcdefghij"), "abcde", false);
test(S("abcdefghij"), "abcdefghij", true);
test(S("abcdefghij"), "abcdefghijklmnopqrst", false);
test(S("abcdefghijklmnopqrst"), "", false);
test(S("abcdefghijklmnopqrst"), "abcde", false);
test(S("abcdefghijklmnopqrst"), "abcdefghij", false);
test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", true);
}
#if TEST_STD_VER > 11
{
typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
constexpr SV sv1;
constexpr SV sv2 { "abcde", 5 };
static_assert ( sv1 == "", "" );
static_assert ( "" == sv1, "" );
static_assert (!(sv1 == "abcde"), "" );
static_assert (!("abcde" == sv1), "" );
static_assert ( sv2 == "abcde", "" );
static_assert ( "abcde" == sv2, "" );
static_assert (!(sv2 == "abcde0"), "" );
static_assert (!("abcde0" == sv2), "" );
}
#endif
return 0;
}
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