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init_size_hash_equal_allocator.pass.cpp
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init_size_hash_equal_allocator.pass.cpp
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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
// <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_multimap
// unordered_multimap(initializer_list<value_type> il, size_type n,
// const hasher& hf, const key_equal& eql, const allocator_type& a);
#include <unordered_map>
#include <string>
#include <set>
#include <cassert>
#include <cfloat>
#include <cmath>
#include <cstddef>
#include "test_macros.h"
#include "../../../check_consecutive.h"
#include "../../../test_compare.h"
#include "../../../test_hash.h"
#include "test_allocator.h"
#include "min_allocator.h"
int main(int, char**)
{
{
typedef std::unordered_multimap<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;
C c({
P(1, "one"),
P(2, "two"),
P(3, "three"),
P(4, "four"),
P(1, "four"),
P(2, "four"),
},
7,
test_hash<int>(8),
test_equal_to<int>(9),
test_allocator<std::pair<const int, std::string> >(10)
);
LIBCPP_ASSERT(c.bucket_count() == 7);
assert(c.size() == 6);
typedef std::pair<C::const_iterator, C::const_iterator> Eq;
Eq eq = c.equal_range(1);
assert(std::distance(eq.first, eq.second) == 2);
std::multiset<std::string> s;
s.insert("one");
s.insert("four");
CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
eq = c.equal_range(2);
assert(std::distance(eq.first, eq.second) == 2);
s.insert("two");
s.insert("four");
CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
eq = c.equal_range(3);
assert(std::distance(eq.first, eq.second) == 1);
C::const_iterator i = eq.first;
assert(i->first == 3);
assert(i->second == "three");
eq = c.equal_range(4);
assert(std::distance(eq.first, eq.second) == 1);
i = eq.first;
assert(i->first == 4);
assert(i->second == "four");
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(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)));
}
{
typedef std::unordered_multimap<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;
C c({
P(1, "one"),
P(2, "two"),
P(3, "three"),
P(4, "four"),
P(1, "four"),
P(2, "four"),
},
7,
test_hash<int>(8),
test_equal_to<int>(9),
min_allocator<std::pair<const int, std::string> >()
);
LIBCPP_ASSERT(c.bucket_count() == 7);
assert(c.size() == 6);
typedef std::pair<C::const_iterator, C::const_iterator> Eq;
Eq eq = c.equal_range(1);
assert(std::distance(eq.first, eq.second) == 2);
std::multiset<std::string> s;
s.insert("one");
s.insert("four");
CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
eq = c.equal_range(2);
assert(std::distance(eq.first, eq.second) == 2);
s.insert("two");
s.insert("four");
CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
eq = c.equal_range(3);
assert(std::distance(eq.first, eq.second) == 1);
C::const_iterator i = eq.first;
assert(i->first == 3);
assert(i->second == "three");
eq = c.equal_range(4);
assert(std::distance(eq.first, eq.second) == 1);
i = eq.first;
assert(i->first == 4);
assert(i->second == "four");
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(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> >()));
}
{
typedef explicit_allocator<std::pair<const int, std::string>> A;
typedef std::unordered_multimap<int, std::string,
test_hash<int>,
test_equal_to<int>,
A
> C;
typedef std::pair<int, std::string> P;
C c({
P(1, "one"),
P(2, "two"),
P(3, "three"),
P(4, "four"),
P(1, "four"),
P(2, "four"),
},
7,
test_hash<int>(8),
test_equal_to<int>(9),
A{}
);
LIBCPP_ASSERT(c.bucket_count() == 7);
assert(c.size() == 6);
typedef std::pair<C::const_iterator, C::const_iterator> Eq;
Eq eq = c.equal_range(1);
assert(std::distance(eq.first, eq.second) == 2);
std::multiset<std::string> s;
s.insert("one");
s.insert("four");
CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
eq = c.equal_range(2);
assert(std::distance(eq.first, eq.second) == 2);
s.insert("two");
s.insert("four");
CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
eq = c.equal_range(3);
assert(std::distance(eq.first, eq.second) == 1);
C::const_iterator i = eq.first;
assert(i->first == 3);
assert(i->second == "three");
eq = c.equal_range(4);
assert(std::distance(eq.first, eq.second) == 1);
i = eq.first;
assert(i->first == 4);
assert(i->second == "four");
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(c.hash_function() == test_hash<int>(8));
assert(c.key_eq() == test_equal_to<int>(9));
assert(c.get_allocator() == A{});
}
return 0;
}