TheRock/compiler/amd-llvm/libcxx/test/std/containers/sequences/array/empty.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
//
//===----------------------------------------------------------------------===//

// <array>

// class array

// constexpr bool empty() const noexcept;

#include <array>
#include <cassert>

#include "test_macros.h"

TEST_CONSTEXPR_CXX14 bool tests() {
  {
    typedef std::array<int, 2> C;
    C c = {};
    ASSERT_NOEXCEPT(c.empty());
    assert(!c.empty());
  }
  {
    typedef std::array<int, 0> C;
    C c = {};
    ASSERT_NOEXCEPT(c.empty());
    assert(c.empty());
  }

  return true;
}

int main(int, char**) {
  tests();
#if TEST_STD_VER >= 14
  static_assert(tests(), "");
#endif

#if TEST_STD_VER >= 11
  // Sanity check for constexpr in C++11
  {
    constexpr std::array<int, 3> array = {};
    static_assert(!array.empty(), "");
  }
#endif

  return 0;
}