69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <unordered_map>
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// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
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// class Alloc = allocator<pair<const Key, T>>>
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// class unordered_map
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// size_type bucket(const key_type& __k) const;
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#include <unordered_map>
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#include <string>
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#include <cassert>
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#include <iterator>
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#include "test_macros.h"
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#include "min_allocator.h"
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int main(int, char**)
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{
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{
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typedef std::unordered_map<int, std::string> C;
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typedef std::pair<int, std::string> P;
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P a[] =
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{
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P(1, "one"),
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P(2, "two"),
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P(3, "three"),
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P(4, "four"),
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P(1, "four"),
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P(2, "four"),
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};
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const C c(std::begin(a), std::end(a));
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size_t bc = c.bucket_count();
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assert(bc >= 5);
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for (size_t i = 0; i < 13; ++i)
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LIBCPP_ASSERT(c.bucket(i) == i % bc);
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}
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#if TEST_STD_VER >= 11
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{
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typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
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min_allocator<std::pair<const int, std::string>>> C;
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typedef std::pair<int, std::string> P;
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P a[] =
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{
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P(1, "one"),
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P(2, "two"),
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P(3, "three"),
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P(4, "four"),
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P(1, "four"),
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P(2, "four"),
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};
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const C c(std::begin(a), std::end(a));
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size_t bc = c.bucket_count();
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assert(bc >= 5);
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for (size_t i = 0; i < 13; ++i)
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LIBCPP_ASSERT(c.bucket(i) == i % bc);
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}
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#endif
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return 0;
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}
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