110 lines
2.4 KiB
C++
110 lines
2.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <array>
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// reference at (size_type); // constexpr in C++17
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#include <array>
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#include <cassert>
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#ifndef TEST_HAS_NO_EXCEPTIONS
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#include <stdexcept>
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#endif
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#include "test_macros.h"
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TEST_CONSTEXPR_CXX17 bool tests()
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{
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{
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typedef double T;
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typedef std::array<T, 3> C;
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C c = {1, 2, 3.5};
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typename C::reference r1 = c.at(0);
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assert(r1 == 1);
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r1 = 5.5;
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assert(c[0] == 5.5);
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typename C::reference r2 = c.at(2);
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assert(r2 == 3.5);
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r2 = 7.5;
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assert(c[2] == 7.5);
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}
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return true;
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}
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void test_exceptions()
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{
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#ifndef TEST_HAS_NO_EXCEPTIONS
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{
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std::array<int, 4> array = {1, 2, 3, 4};
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try {
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TEST_IGNORE_NODISCARD array.at(4);
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assert(false);
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} catch (std::out_of_range const&) {
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// pass
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} catch (...) {
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assert(false);
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}
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try {
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TEST_IGNORE_NODISCARD array.at(5);
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assert(false);
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} catch (std::out_of_range const&) {
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// pass
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} catch (...) {
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assert(false);
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}
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try {
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TEST_IGNORE_NODISCARD array.at(6);
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assert(false);
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} catch (std::out_of_range const&) {
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// pass
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} catch (...) {
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assert(false);
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}
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try {
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using size_type = decltype(array)::size_type;
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TEST_IGNORE_NODISCARD array.at(static_cast<size_type>(-1));
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assert(false);
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} catch (std::out_of_range const&) {
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// pass
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} catch (...) {
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assert(false);
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}
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}
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{
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std::array<int, 0> array = {};
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try {
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TEST_IGNORE_NODISCARD array.at(0);
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assert(false);
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} catch (std::out_of_range const&) {
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// pass
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} catch (...) {
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assert(false);
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}
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}
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#endif
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}
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int main(int, char**)
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{
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tests();
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test_exceptions();
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#if TEST_STD_VER >= 17
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static_assert(tests(), "");
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#endif
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return 0;
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}
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