assign_init.pass.cpp (3443B)
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 // UNSUPPORTED: c++98, c++03 11 12 // <unordered_map> 13 14 // template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>, 15 // class Alloc = allocator<pair<const Key, T>>> 16 // class unordered_map 17 18 // unordered_map& operator=(initializer_list<value_type> il); 19 20 #include <unordered_map> 21 #include <string> 22 #include <cassert> 23 #include <cfloat> 24 #include <cmath> 25 #include <cstddef> 26 27 #include "../../../test_compare.h" 28 #include "../../../test_hash.h" 29 #include "min_allocator.h" 30 31 int main() 32 { 33 { 34 typedef std::allocator<std::pair<const int, std::string> > A; 35 typedef std::unordered_map<int, std::string, 36 test_hash<std::hash<int> >, 37 test_compare<std::equal_to<int> >, 38 A 39 > C; 40 typedef std::pair<int, std::string> P; 41 C c = { 42 P(4, "four"), 43 P(1, "four"), 44 P(2, "four"), 45 }; 46 c = { 47 P(1, "one"), 48 P(2, "two"), 49 P(3, "three"), 50 P(4, "four"), 51 P(1, "four"), 52 P(2, "four"), 53 }; 54 assert(c.bucket_count() >= 5); 55 assert(c.size() == 4); 56 assert(c.at(1) == "one"); 57 assert(c.at(2) == "two"); 58 assert(c.at(3) == "three"); 59 assert(c.at(4) == "four"); 60 assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size()); 61 assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size()); 62 assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON); 63 assert(c.max_load_factor() == 1); 64 } 65 { 66 typedef min_allocator<std::pair<const int, std::string> > A; 67 typedef std::unordered_map<int, std::string, 68 test_hash<std::hash<int> >, 69 test_compare<std::equal_to<int> >, 70 A 71 > C; 72 typedef std::pair<int, std::string> P; 73 C c = { 74 P(4, "four"), 75 P(1, "four"), 76 P(2, "four"), 77 }; 78 c = { 79 P(1, "one"), 80 P(2, "two"), 81 P(3, "three"), 82 P(4, "four"), 83 P(1, "four"), 84 P(2, "four"), 85 }; 86 assert(c.bucket_count() >= 5); 87 assert(c.size() == 4); 88 assert(c.at(1) == "one"); 89 assert(c.at(2) == "two"); 90 assert(c.at(3) == "three"); 91 assert(c.at(4) == "four"); 92 assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size()); 93 assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size()); 94 assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON); 95 assert(c.max_load_factor() == 1); 96 } 97 }