//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <unordered_map>
// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
// class Alloc = allocator<pair<const Key, T>>>
// class unordered_map
// unordered_map(unordered_map&& u);
// UNSUPPORTED: c++03
#include <unordered_map>
#include <string>
#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(int, char**)
{
{
typedef std::unordered_map<int, std::string,
test_hash<int>,
test_equal_to<int>,
test_allocator<std::pair<const int, std::string> >
> C;
C c0(7,
test_hash<int>(8),
test_equal_to<int>(9),
test_allocator<std::pair<const int, std::string> >(10)
);
C::iterator it0 = c0.begin();
C c = std::move(c0);
LIBCPP_ASSERT(c.bucket_count() == 7);
assert(c.size() == 0);
assert(c.hash_function() == test_hash<int>(8));
assert(c.key_eq() == test_equal_to<int>(9));
assert(c.get_allocator() ==
(test_allocator<std::pair<const int, std::string> >(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(it0 == c.begin()); // Iterators remain valid
assert(c0.empty());
}
{
typedef std::unordered_map<int, std::string,
test_hash<int>,
test_equal_to<int>,
test_allocator<std::pair<const int, std::string> >
> C;
typedef std::pair<int, std::string> P;
P a[] =
{
P(1, "one"),
P(2, "two"),
P(3, "three"),
P(4, "four"),
P(1, "four"),
P(2, "four"),
};
C c0(a, a + sizeof(a)/sizeof(a[0]),
7,
test_hash<int>(8),
test_equal_to<int>(9),
test_allocator<std::pair<const int, std::string> >(10)
);
C::iterator it0 = c0.begin();
C c = std::move(c0);
LIBCPP_ASSERT(c.bucket_count() == 7);
assert(c.size() == 4);
assert(c.at(1) == "one");
assert(c.at(2) == "two");
assert(c.at(3) == "three");
assert(c.at(4) == "four");
assert(c.hash_function() == test_hash<int>(8));
assert(c.key_eq() == test_equal_to<int>(9));
assert(c.get_allocator() ==
(test_allocator<std::pair<const int, std::string> >(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(it0 == c.begin()); // Iterators remain valid
assert(c0.empty());
}
{
typedef std::unordered_map<int, std::string,
test_hash<int>,
test_equal_to<int>,
min_allocator<std::pair<const int, std::string> >
> C;
C c0(7,
test_hash<int>(8),
test_equal_to<int>(9),
min_allocator<std::pair<const int, std::string> >()
);
C::iterator it0 = c0.begin();
C c = std::move(c0);
LIBCPP_ASSERT(c.bucket_count() == 7);
assert(c.size() == 0);
assert(c.hash_function() == test_hash<int>(8));
assert(c.key_eq() == test_equal_to<int>(9));
assert(c.get_allocator() ==
(min_allocator<std::pair<const int, std::string> >()));
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(it0 == c.begin()); // Iterators remain valid
assert(c0.empty());
}
{
typedef std::unordered_map<int, std::string,
test_hash<int>,
test_equal_to<int>,
min_allocator<std::pair<const int, std::string> >
> C;
typedef std::pair<int, std::string> P;
P a[] =
{
P(1, "one"),
P(2, "two"),
P(3, "three"),
P(4, "four"),
P(1, "four"),
P(2, "four"),
};
C c0(a, a + sizeof(a)/sizeof(a[0]),
7,
test_hash<int>(8),
test_equal_to<int>(9),
min_allocator<std::pair<const int, std::string> >()
);
C::iterator it0 = c0.begin();
C c = std::move(c0);
LIBCPP_ASSERT(c.bucket_count() == 7);
assert(c.size() == 4);
assert(c.at(1) == "one");
assert(c.at(2) == "two");
assert(c.at(3) == "three");
assert(c.at(4) == "four");
assert(c.hash_function() == test_hash<int>(8));
assert(c.key_eq() == test_equal_to<int>(9));
assert(c.get_allocator() ==
(min_allocator<std::pair<const int, std::string> >()));
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(it0 == c.begin()); // Iterators remain valid
assert(c0.empty());
}
return 0;
}
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