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// <array>
10
11// An array is a contiguous container
12
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 only
42 static_assert(tests(), "");
43#endif
44 return 0;
45}
46

source code of libcxx/test/std/containers/sequences/array/contiguous.pass.cpp