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 // <memory>
10 
11 // unique_ptr
12 
13 // Test unique_ptr move assignment
14 
15 #include <memory>
16 #include <cassert>
17 
18 #include "test_macros.h"
19 #include "unique_ptr_test_helper.h"
20 
21 // test assignment from null
22 
23 template <bool IsArray>
test_basic()24 TEST_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 
test()40 TEST_CONSTEXPR_CXX23 bool test() {
41   test_basic</*IsArray*/ false>();
42   test_basic<true>();
43 
44   return true;
45 }
46 
main(int,char **)47 int main(int, char**) {
48   test();
49 #if TEST_STD_VER >= 23
50   static_assert(test());
51 #endif
52 
53   return 0;
54 }
55