| //===----------------------------------------------------------------------===// |
| // |
| // 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, c++11 |
| |
| // <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 |
| |
| // template <class InputIt> |
| // unordered_map(InputIt first, InputIt last, size_type n, |
| // const hasher& hash, const allocator_type& alloc); |
| |
| #include <unordered_map> |
| #include <cassert> |
| #include <string> |
| #include <cfloat> |
| #include <cmath> |
| #include <cstddef> |
| #include <iterator> |
| |
| #include "test_macros.h" |
| #include "test_iterators.h" |
| #include "../../../test_compare.h" |
| #include "../../../test_hash.h" |
| #include "test_allocator.h" |
| #include "min_allocator.h" |
| |
| template <class Allocator> |
| void test(const Allocator& alloc) |
| { |
| typedef std::unordered_map<int, std::string, |
| test_hash<int>, |
| test_equal_to<int>, |
| Allocator |
| > 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 c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a) / sizeof(a[0])), |
| 7, |
| test_hash<int>(5), |
| alloc); |
| |
| 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>(5)); |
| assert(c.key_eq() == test_equal_to<int>()); |
| assert(c.get_allocator() == alloc); |
| assert(!c.empty()); |
| assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size()); |
| assert(std::fabs(c.load_factor() - (float)c.size() / c.bucket_count()) < FLT_EPSILON); |
| assert(c.max_load_factor() == 1); |
| } |
| |
| int main(int, char**) |
| { |
| typedef std::pair<const int, std::string> P; |
| test(test_allocator<P>(10)); |
| test(min_allocator<P>()); |
| test(explicit_allocator<P>()); |
| |
| return 0; |
| } |