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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++98, c++03
// <unordered_set>
// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
// class Alloc = allocator<Value>>
// class unordered_set
// unordered_set(unordered_set&& u);
#include <unordered_set>
#include <cassert>
#include <cfloat>
#include <cmath>
#include <cstddef>
#include "test_macros.h"
#include "../../../test_compare.h"
#include "../../../test_hash.h"
#include "test_allocator.h"
#include "min_allocator.h"
int main()
{
{
typedef std::unordered_set<int,
test_hash<std::hash<int> >,
test_compare<std::equal_to<int> >,
test_allocator<int>
> C;
C c0(7,
test_hash<std::hash<int> >(8),
test_compare<std::equal_to<int> >(9),
test_allocator<int>(10)
);
C c = std::move(c0);
LIBCPP_ASSERT(c.bucket_count() == 7);
assert(c.size() == 0);
assert(c.hash_function() == test_hash<std::hash<int> >(8));
assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
assert(c.get_allocator() == test_allocator<int>(10));
assert(c.empty());
assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
assert(c.load_factor() == 0);
assert(c.max_load_factor() == 1);
assert(c0.empty());
}
{
typedef std::unordered_set<int,
test_hash<std::hash<int> >,
test_compare<std::equal_to<int> >,
test_allocator<int>
> C;
typedef int P;
P a[] =
{
P(1),
P(2),
P(3),
P(4),
P(1),
P(2)
};
C c0(a, a + sizeof(a)/sizeof(a[0]),
7,
test_hash<std::hash<int> >(8),
test_compare<std::equal_to<int> >(9),
test_allocator<int>(10)
);
C c = std::move(c0);
LIBCPP_ASSERT(c.bucket_count() == 7);
assert(c.size() == 4);
assert(c.count(1) == 1);
assert(c.count(2) == 1);
assert(c.count(3) == 1);
assert(c.count(4) == 1);
assert(c.hash_function() == test_hash<std::hash<int> >(8));
assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
assert(c.get_allocator() == test_allocator<int>(10));
assert(!c.empty());
assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
assert(c.max_load_factor() == 1);
assert(c0.empty());
}
{
typedef std::unordered_set<int,
test_hash<std::hash<int> >,
test_compare<std::equal_to<int> >,
min_allocator<int>
> C;
C c0(7,
test_hash<std::hash<int> >(8),
test_compare<std::equal_to<int> >(9),
min_allocator<int>()
);
C c = std::move(c0);
LIBCPP_ASSERT(c.bucket_count() == 7);
assert(c.size() == 0);
assert(c.hash_function() == test_hash<std::hash<int> >(8));
assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
assert(c.get_allocator() == min_allocator<int>());
assert(c.empty());
assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
assert(c.load_factor() == 0);
assert(c.max_load_factor() == 1);
assert(c0.empty());
}
{
typedef std::unordered_set<int,
test_hash<std::hash<int> >,
test_compare<std::equal_to<int> >,
min_allocator<int>
> C;
typedef int P;
P a[] =
{
P(1),
P(2),
P(3),
P(4),
P(1),
P(2)
};
C c0(a, a + sizeof(a)/sizeof(a[0]),
7,
test_hash<std::hash<int> >(8),
test_compare<std::equal_to<int> >(9),
min_allocator<int>()
);
C c = std::move(c0);
LIBCPP_ASSERT(c.bucket_count() == 7);
assert(c.size() == 4);
assert(c.count(1) == 1);
assert(c.count(2) == 1);
assert(c.count(3) == 1);
assert(c.count(4) == 1);
assert(c.hash_function() == test_hash<std::hash<int> >(8));
assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
assert(c.get_allocator() == min_allocator<int>());
assert(!c.empty());
assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
assert(c.max_load_factor() == 1);
assert(c0.empty());
}
#if _LIBCPP_DEBUG >= 1
{
std::unordered_set<int> s1 = {1, 2, 3};
std::unordered_set<int>::iterator i = s1.begin();
int k = *i;
std::unordered_set<int> s2 = std::move(s1);
assert(*i == k);
s2.erase(i);
assert(s2.size() == 2);
}
#endif
}
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