55 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// <memory>10 11// unique_ptr12 13// Test unique_ptr move assignment14 15#include <memory>16#include <cassert>17 18#include "test_macros.h"19#include "unique_ptr_test_helper.h"20 21// test assignment from null22 23template <bool IsArray>24TEST_CONSTEXPR_CXX23 void test_basic() {25 typedef typename std::conditional<IsArray, A[], A>::type VT;26 const int expect_alive = IsArray ? 5 : 1;27 {28 std::unique_ptr<VT> s2(newValue<VT>(expect_alive));29 if (!TEST_IS_CONSTANT_EVALUATED)30 assert(A::count == expect_alive);31 s2 = nullptr;32 if (!TEST_IS_CONSTANT_EVALUATED)33 assert(A::count == 0);34 assert(s2.get() == 0);35 }36 if (!TEST_IS_CONSTANT_EVALUATED)37 assert(A::count == 0);38}39 40TEST_CONSTEXPR_CXX23 bool test() {41 test_basic</*IsArray*/ false>();42 test_basic<true>();43 44 return true;45}46 47int main(int, char**) {48 test();49#if TEST_STD_VER >= 2350 static_assert(test());51#endif52 53 return 0;54}55