blob: 47bc933c70a28884688674a2e44b29c1fd0913a0 [file] [log] [blame]
//===----------------------------------------------------------------------===//
//
// 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
// size_type bucket(const key_type& __k) const;
#ifdef _LIBCPP_DEBUG
#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
#endif
#include <unordered_map>
#include <string>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
int main(int, char**)
{
{
typedef std::unordered_map<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"),
};
const C c(std::begin(a), std::end(a));
size_t bc = c.bucket_count();
assert(bc >= 5);
for (size_t i = 0; i < 13; ++i)
LIBCPP_ASSERT(c.bucket(i) == i % bc);
}
#if TEST_STD_VER >= 11
{
typedef std::unordered_map<int, std::string, std::hash<int>, std::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"),
};
const C c(std::begin(a), std::end(a));
size_t bc = c.bucket_count();
assert(bc >= 5);
for (size_t i = 0; i < 13; ++i)
LIBCPP_ASSERT(c.bucket(i) == i % bc);
}
#endif
#if _LIBCPP_DEBUG_LEVEL >= 1
{
typedef std::unordered_map<int, std::string> C;
C c;
(void) c.bucket(3);
assert(false);
}
#endif
return 0;
}