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 // <vector>
10 
11 // class vector
12 
13 // bool empty() const noexcept;
14 
15 #include <vector>
16 #include <cassert>
17 
18 #include "test_macros.h"
19 #include "min_allocator.h"
20 
tests()21 TEST_CONSTEXPR_CXX20 bool tests() {
22     {
23     typedef std::vector<int> C;
24     C c;
25     ASSERT_NOEXCEPT(c.empty());
26     assert(c.empty());
27     c.push_back(C::value_type(1));
28     assert(!c.empty());
29     c.clear();
30     assert(c.empty());
31     }
32 #if TEST_STD_VER >= 11
33     {
34     typedef std::vector<int, min_allocator<int>> C;
35     C c;
36     ASSERT_NOEXCEPT(c.empty());
37     assert(c.empty());
38     c.push_back(C::value_type(1));
39     assert(!c.empty());
40     c.clear();
41     assert(c.empty());
42     }
43 #endif
44 
45     return true;
46 }
47 
main(int,char **)48 int main(int, char**)
49 {
50     tests();
51 #if TEST_STD_VER > 17
52     static_assert(tests());
53 #endif
54     return 0;
55 }
56