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// UNSUPPORTED: c++03
10
11// <vector>
12// vector<bool>
13
14// vector& operator=(vector&& c);
15
16#include <cassert>
17#include <vector>
18
19#include "min_allocator.h"
20#include "test_allocator.h"
21#include "test_macros.h"
22
23TEST_CONSTEXPR_CXX20 void test_move_assignment(unsigned N) {
24 //
25 // Testing for container move where either POCMA = true_type or the allocators compare equal
26 //
27 { // Test with POCMA = true_type
28 std::vector<bool, other_allocator<bool> > l(N, true, other_allocator<bool>(5));
29 std::vector<bool, other_allocator<bool> > lo(N, true, other_allocator<bool>(5));
30 std::vector<bool, other_allocator<bool> > l2(N + 10, false, other_allocator<bool>(42));
31 l2 = std::move(l);
32 assert(l2 == lo);
33 LIBCPP_ASSERT(l.empty()); // After move, source vector is in a vliad but unspecified state. libc++ leaves it empty.
34 assert(l2.get_allocator() == lo.get_allocator());
35 }
36 { // Test with POCMA = false_type and allocators compare equal
37 std::vector<bool, test_allocator<bool> > l(N, true, test_allocator<bool>(5));
38 std::vector<bool, test_allocator<bool> > lo(N, true, test_allocator<bool>(5));
39 std::vector<bool, test_allocator<bool> > l2(N + 10, false, test_allocator<bool>(5));
40 l2 = std::move(l);
41 assert(l2 == lo);
42 LIBCPP_ASSERT(l.empty());
43 assert(l2.get_allocator() == lo.get_allocator());
44 }
45 { // Test with POCMA = false_type and allocators compare equal
46 std::vector<bool, min_allocator<bool> > l(N, true, min_allocator<bool>{});
47 std::vector<bool, min_allocator<bool> > lo(N, true, min_allocator<bool>{});
48 std::vector<bool, min_allocator<bool> > l2(N + 10, false, min_allocator<bool>{});
49 l2 = std::move(l);
50 assert(l2 == lo);
51 LIBCPP_ASSERT(l.empty());
52 assert(l2.get_allocator() == lo.get_allocator());
53 }
54
55 //
56 // Testing for element-wise move where POCMA = false_type and allocators compare unequal
57 //
58 { // Test with reallocation during the element-wise move due to empty destination vector.
59 std::vector<bool, test_allocator<bool> > l(N, true, test_allocator<bool>(5));
60 std::vector<bool, test_allocator<bool> > lo(N, true, test_allocator<bool>(5));
61 std::vector<bool, test_allocator<bool> > l2(test_allocator<bool>(42));
62 l2 = std::move(l);
63 assert(l2 == lo);
64 LIBCPP_ASSERT(!l.empty());
65 assert(l2.get_allocator() == test_allocator<bool>(42));
66 }
67 { // Test with reallocation occurs during the element-wise move due to insufficient destination space.
68 std::vector<bool, test_allocator<bool> > l(N + 64, true, test_allocator<bool>(5));
69 std::vector<bool, test_allocator<bool> > lo(N + 64, true, test_allocator<bool>(5));
70 std::vector<bool, test_allocator<bool> > l2(10, false, test_allocator<bool>(42));
71 l2 = std::move(l);
72 assert(l2 == lo);
73 LIBCPP_ASSERT(!l.empty());
74 assert(l2.get_allocator() == test_allocator<bool>(42));
75 }
76 { // Test without reallocation where source vector elements fit within destination size.
77 std::vector<bool, test_allocator<bool> > l(N, true, test_allocator<bool>(5));
78 std::vector<bool, test_allocator<bool> > lo(N, true, test_allocator<bool>(5));
79 std::vector<bool, test_allocator<bool> > l2(N * 2, false, test_allocator<bool>(42));
80 l2 = std::move(l);
81 assert(l2 == lo);
82 LIBCPP_ASSERT(!l.empty());
83 assert(l2.get_allocator() == test_allocator<bool>(42));
84 }
85}
86
87TEST_CONSTEXPR_CXX20 bool tests() {
88 test_move_assignment(N: 3);
89 test_move_assignment(N: 18);
90 test_move_assignment(N: 33);
91 test_move_assignment(N: 65);
92 test_move_assignment(N: 299);
93
94 return true;
95}
96
97int main(int, char**) {
98 tests();
99#if TEST_STD_VER > 17
100 static_assert(tests());
101#endif
102 return 0;
103}
104

source code of libcxx/test/std/containers/sequences/vector.bool/assign_move.pass.cpp