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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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// constexpr drop_view(V base, range_difference_t<V> count); // explicit since C++23
#include <ranges>
#include "test_convertible.h"
#include "test_macros.h"
#include "types.h"
// SFINAE tests.
#if TEST_STD_VER >= 23
static_assert(!test_convertible<std::ranges::drop_view<View>, View, std::ranges::range_difference_t<View>>(),
"This constructor must be explicit");
#else
static_assert(test_convertible<std::ranges::drop_view<View>, View, std::ranges::range_difference_t<View>>(),
"This constructor must not be explicit");
#endif // TEST_STD_VER >= 23
constexpr bool test() {
std::ranges::drop_view dropView1(MoveOnlyView(), 4);
assert(dropView1.size() == 4);
assert(dropView1.begin() == globalBuff + 4);
std::ranges::drop_view dropView2(ForwardView(), 4);
assert(base(dropView2.begin()) == globalBuff + 4);
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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