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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03
// <vector>
// vector<bool>
// vector& operator=(vector&& c);
#include <cassert>
#include <vector>
#include "min_allocator.h"
#include "test_allocator.h"
#include "test_macros.h"
TEST_CONSTEXPR_CXX20 void test_move_assignment(unsigned N) {
//
// Testing for container move where either POCMA = true_type or the allocators compare equal
//
{ // Test with POCMA = true_type
std::vector<bool, other_allocator<bool> > l(N, true, other_allocator<bool>(5));
std::vector<bool, other_allocator<bool> > lo(N, true, other_allocator<bool>(5));
std::vector<bool, other_allocator<bool> > l2(N + 10, false, other_allocator<bool>(42));
l2 = std::move(l);
assert(l2 == lo);
LIBCPP_ASSERT(l.empty()); // After move, source vector is in a vliad but unspecified state. libc++ leaves it empty.
assert(l2.get_allocator() == lo.get_allocator());
}
{ // Test with POCMA = false_type and allocators compare equal
std::vector<bool, test_allocator<bool> > l(N, true, test_allocator<bool>(5));
std::vector<bool, test_allocator<bool> > lo(N, true, test_allocator<bool>(5));
std::vector<bool, test_allocator<bool> > l2(N + 10, false, test_allocator<bool>(5));
l2 = std::move(l);
assert(l2 == lo);
LIBCPP_ASSERT(l.empty());
assert(l2.get_allocator() == lo.get_allocator());
}
{ // Test with POCMA = false_type and allocators compare equal
std::vector<bool, min_allocator<bool> > l(N, true, min_allocator<bool>{});
std::vector<bool, min_allocator<bool> > lo(N, true, min_allocator<bool>{});
std::vector<bool, min_allocator<bool> > l2(N + 10, false, min_allocator<bool>{});
l2 = std::move(l);
assert(l2 == lo);
LIBCPP_ASSERT(l.empty());
assert(l2.get_allocator() == lo.get_allocator());
}
//
// Testing for element-wise move where POCMA = false_type and allocators compare unequal
//
{ // Test with reallocation during the element-wise move due to empty destination vector.
std::vector<bool, test_allocator<bool> > l(N, true, test_allocator<bool>(5));
std::vector<bool, test_allocator<bool> > lo(N, true, test_allocator<bool>(5));
std::vector<bool, test_allocator<bool> > l2(test_allocator<bool>(42));
l2 = std::move(l);
assert(l2 == lo);
LIBCPP_ASSERT(!l.empty());
assert(l2.get_allocator() == test_allocator<bool>(42));
}
{ // Test with reallocation occurs during the element-wise move due to insufficient destination space.
std::vector<bool, test_allocator<bool> > l(N + 64, true, test_allocator<bool>(5));
std::vector<bool, test_allocator<bool> > lo(N + 64, true, test_allocator<bool>(5));
std::vector<bool, test_allocator<bool> > l2(10, false, test_allocator<bool>(42));
l2 = std::move(l);
assert(l2 == lo);
LIBCPP_ASSERT(!l.empty());
assert(l2.get_allocator() == test_allocator<bool>(42));
}
{ // Test without reallocation where source vector elements fit within destination size.
std::vector<bool, test_allocator<bool> > l(N, true, test_allocator<bool>(5));
std::vector<bool, test_allocator<bool> > lo(N, true, test_allocator<bool>(5));
std::vector<bool, test_allocator<bool> > l2(N * 2, false, test_allocator<bool>(42));
l2 = std::move(l);
assert(l2 == lo);
LIBCPP_ASSERT(!l.empty());
assert(l2.get_allocator() == test_allocator<bool>(42));
}
}
TEST_CONSTEXPR_CXX20 bool tests() {
test_move_assignment(3);
test_move_assignment(18);
test_move_assignment(33);
test_move_assignment(65);
test_move_assignment(299);
return true;
}
int main(int, char**) {
tests();
#if TEST_STD_VER > 17
static_assert(tests());
#endif
return 0;
}
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