46 lines · 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-exception6//7//===----------------------------------------------------------------------===//8 9// <array>10 11// An array is a contiguous container12 13#include <array>14#include <cassert>15#include <memory>16 17#include "test_macros.h"18 19template <class Container>20TEST_CONSTEXPR_CXX14 void assert_contiguous(Container const& c) {21 for (std::size_t i = 0; i < c.size(); ++i)22 assert(*(c.begin() + i) == *(std::addressof(*c.begin()) + i));23}24 25TEST_CONSTEXPR_CXX17 bool tests() {26 assert_contiguous(std::array<double, 0>());27 assert_contiguous(std::array<double, 1>());28 assert_contiguous(std::array<double, 2>());29 assert_contiguous(std::array<double, 3>());30 31 assert_contiguous(std::array<char, 0>());32 assert_contiguous(std::array<char, 1>());33 assert_contiguous(std::array<char, 2>());34 assert_contiguous(std::array<char, 3>());35 36 return true;37}38 39int main(int, char**) {40 tests();41#if TEST_STD_VER >= 17 // begin() & friends are constexpr in >= C++17 only42 static_assert(tests(), "");43#endif44 return 0;45}46