init_size_hash_equal.pass.cpp revision d24c465beaec2fe9a0e365e6379cd5d3acaeb2ca
1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// <unordered_map> 11 12// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>, 13// class Alloc = allocator<pair<const Key, T>>> 14// class unordered_multimap 15 16// unordered_multimap(initializer_list<value_type> il, size_type n, 17// const hasher& hf, const key_equal& eql); 18 19#include <unordered_map> 20#include <string> 21#include <cassert> 22#include <cfloat> 23#include <cmath> 24 25#include "../../../test_compare.h" 26#include "../../../test_hash.h" 27#include "test_allocator.h" 28#include "min_allocator.h" 29 30int main() 31{ 32#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 33 { 34 typedef std::unordered_multimap<int, std::string, 35 test_hash<std::hash<int> >, 36 test_compare<std::equal_to<int> >, 37 test_allocator<std::pair<const int, std::string> > 38 > C; 39 typedef std::pair<int, std::string> P; 40 C c({ 41 P(1, "one"), 42 P(2, "two"), 43 P(3, "three"), 44 P(4, "four"), 45 P(1, "four"), 46 P(2, "four"), 47 }, 48 7, 49 test_hash<std::hash<int> >(8), 50 test_compare<std::equal_to<int> >(9) 51 ); 52 assert(c.bucket_count() == 7); 53 assert(c.size() == 6); 54 typedef std::pair<C::const_iterator, C::const_iterator> Eq; 55 Eq eq = c.equal_range(1); 56 assert(std::distance(eq.first, eq.second) == 2); 57 C::const_iterator i = eq.first; 58 assert(i->first == 1); 59 assert(i->second == "one"); 60 ++i; 61 assert(i->first == 1); 62 assert(i->second == "four"); 63 eq = c.equal_range(2); 64 assert(std::distance(eq.first, eq.second) == 2); 65 i = eq.first; 66 assert(i->first == 2); 67 assert(i->second == "two"); 68 ++i; 69 assert(i->first == 2); 70 assert(i->second == "four"); 71 72 eq = c.equal_range(3); 73 assert(std::distance(eq.first, eq.second) == 1); 74 i = eq.first; 75 assert(i->first == 3); 76 assert(i->second == "three"); 77 eq = c.equal_range(4); 78 assert(std::distance(eq.first, eq.second) == 1); 79 i = eq.first; 80 assert(i->first == 4); 81 assert(i->second == "four"); 82 assert(std::distance(c.begin(), c.end()) == c.size()); 83 assert(std::distance(c.cbegin(), c.cend()) == c.size()); 84 assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON); 85 assert(c.max_load_factor() == 1); 86 assert(c.hash_function() == test_hash<std::hash<int> >(8)); 87 assert(c.key_eq() == test_compare<std::equal_to<int> >(9)); 88 assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >())); 89 } 90#if TEST_STD_VER >= 11 91 { 92 typedef std::unordered_multimap<int, std::string, 93 test_hash<std::hash<int> >, 94 test_compare<std::equal_to<int> >, 95 min_allocator<std::pair<const int, std::string> > 96 > C; 97 typedef std::pair<int, std::string> P; 98 C c({ 99 P(1, "one"), 100 P(2, "two"), 101 P(3, "three"), 102 P(4, "four"), 103 P(1, "four"), 104 P(2, "four"), 105 }, 106 7, 107 test_hash<std::hash<int> >(8), 108 test_compare<std::equal_to<int> >(9) 109 ); 110 assert(c.bucket_count() == 7); 111 assert(c.size() == 6); 112 typedef std::pair<C::const_iterator, C::const_iterator> Eq; 113 Eq eq = c.equal_range(1); 114 assert(std::distance(eq.first, eq.second) == 2); 115 C::const_iterator i = eq.first; 116 assert(i->first == 1); 117 assert(i->second == "one"); 118 ++i; 119 assert(i->first == 1); 120 assert(i->second == "four"); 121 eq = c.equal_range(2); 122 assert(std::distance(eq.first, eq.second) == 2); 123 i = eq.first; 124 assert(i->first == 2); 125 assert(i->second == "two"); 126 ++i; 127 assert(i->first == 2); 128 assert(i->second == "four"); 129 130 eq = c.equal_range(3); 131 assert(std::distance(eq.first, eq.second) == 1); 132 i = eq.first; 133 assert(i->first == 3); 134 assert(i->second == "three"); 135 eq = c.equal_range(4); 136 assert(std::distance(eq.first, eq.second) == 1); 137 i = eq.first; 138 assert(i->first == 4); 139 assert(i->second == "four"); 140 assert(std::distance(c.begin(), c.end()) == c.size()); 141 assert(std::distance(c.cbegin(), c.cend()) == c.size()); 142 assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON); 143 assert(c.max_load_factor() == 1); 144 assert(c.hash_function() == test_hash<std::hash<int> >(8)); 145 assert(c.key_eq() == test_compare<std::equal_to<int> >(9)); 146 assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >())); 147 } 148#endif 149#endif // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 150} 151