test/std/ranges/range.factories/range.single.view/range_concept_conformance.compile.pass.cpp

//===----------------------------------------------------------------------===//
//
// 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
// UNSUPPORTED: libcpp-no-concepts
// UNSUPPORTED: gcc-10
// UNSUPPORTED: libcpp-has-no-incomplete-ranges

// Test that single_view conforms to range and view concepts.

#include <ranges>

#include <cassert>
#include <concepts>

#include "test_iterators.h"

struct Empty {};

static_assert(std::ranges::contiguous_range<std::ranges::single_view<Empty>>);
static_assert(std::ranges::contiguous_range<const std::ranges::single_view<Empty>>);
static_assert(std::ranges::view<std::ranges::single_view<Empty>>);
static_assert(std::ranges::view<std::ranges::single_view<const Empty>>);
static_assert(std::ranges::contiguous_range<const std::ranges::single_view<const Empty>>);
static_assert(std::ranges::view<std::ranges::single_view<int>>);
static_assert(std::ranges::view<std::ranges::single_view<const int>>);
static_assert(std::ranges::contiguous_range<const std::ranges::single_view<const int>>);