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// { dg-do compile { target c++23 } }
// Copyright (C) 2021-2024 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// basic_string_view contains
#include <string_view>
void
test01()
{
constexpr std::wstring_view haystack = L"no place for needles";
static_assert(haystack.contains(std::wstring_view(L"")));
static_assert(haystack.contains(std::wstring_view(L"no")));
static_assert(haystack.contains(std::wstring_view(L"needles")));
static_assert(haystack.contains(std::wstring_view(L" for ")));
static_assert(!haystack.contains(std::wstring_view(L"places")));
static_assert(!haystack.contains('\0'));
static_assert(haystack.contains('n'));
static_assert(haystack.contains('e'));
static_assert(haystack.contains('s'));
static_assert(!haystack.contains('x'));
static_assert(haystack.contains(L""));
static_assert(haystack.contains(L"no"));
static_assert(haystack.contains(L"needles"));
static_assert(haystack.contains(L" for "));
static_assert(!haystack.contains(L"places"));
constexpr std::wstring_view nothing;
static_assert(nothing.contains(L""));
static_assert(!nothing.contains('\0'));
}
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