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

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03, c++11, c++14, c++17
  10
  11 // Test that single_view conforms to range and view concepts.
  12
  13 #include <ranges>
  14
  15 #include <cassert>
  16 #include <concepts>
  17
  18 #include "test_iterators.h"
  19
  20 struct Empty {};
  21
  22 static_assert(std::ranges::contiguous_range<std::ranges::single_view<Empty>>);
  23 static_assert(std::ranges::contiguous_range<const std::ranges::single_view<Empty>>);
  24 static_assert(std::ranges::view<std::ranges::single_view<Empty>>);
  25 static_assert(std::ranges::view<std::ranges::single_view<const Empty>>);
  26 static_assert(std::ranges::contiguous_range<const std::ranges::single_view<const Empty>>);
  27 static_assert(std::ranges::view<std::ranges::single_view<int>>);
  28 static_assert(std::ranges::view<std::ranges::single_view<const int>>);
  29 static_assert(std::ranges::contiguous_range<const std::ranges::single_view<const int>>);