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_map
15
16 // unordered_map& operator=(initializer_list<value_type> il);
17
18 #include <unordered_map>
19 #include <string>
20 #include <cassert>
21 #include <cfloat>
22
23 #include "../../../test_compare.h"
24 #include "../../../test_hash.h"
25 #include "min_allocator.h"
26
main()27 int main()
28 {
29 #ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
30 {
31 typedef std::allocator<std::pair<const int, std::string> > A;
32 typedef std::unordered_map<int, std::string,
33 test_hash<std::hash<int> >,
34 test_compare<std::equal_to<int> >,
35 A
36 > C;
37 typedef std::pair<int, std::string> P;
38 C c = {
39 P(4, "four"),
40 P(1, "four"),
41 P(2, "four"),
42 };
43 c = {
44 P(1, "one"),
45 P(2, "two"),
46 P(3, "three"),
47 P(4, "four"),
48 P(1, "four"),
49 P(2, "four"),
50 };
51 assert(c.bucket_count() >= 5);
52 assert(c.size() == 4);
53 assert(c.at(1) == "one");
54 assert(c.at(2) == "two");
55 assert(c.at(3) == "three");
56 assert(c.at(4) == "four");
57 assert(std::distance(c.begin(), c.end()) == c.size());
58 assert(std::distance(c.cbegin(), c.cend()) == c.size());
59 assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
60 assert(c.max_load_factor() == 1);
61 }
62 #if __cplusplus >= 201103L
63 {
64 typedef min_allocator<std::pair<const int, std::string> > A;
65 typedef std::unordered_map<int, std::string,
66 test_hash<std::hash<int> >,
67 test_compare<std::equal_to<int> >,
68 A
69 > C;
70 typedef std::pair<int, std::string> P;
71 C c = {
72 P(4, "four"),
73 P(1, "four"),
74 P(2, "four"),
75 };
76 c = {
77 P(1, "one"),
78 P(2, "two"),
79 P(3, "three"),
80 P(4, "four"),
81 P(1, "four"),
82 P(2, "four"),
83 };
84 assert(c.bucket_count() >= 5);
85 assert(c.size() == 4);
86 assert(c.at(1) == "one");
87 assert(c.at(2) == "two");
88 assert(c.at(3) == "three");
89 assert(c.at(4) == "four");
90 assert(std::distance(c.begin(), c.end()) == c.size());
91 assert(std::distance(c.cbegin(), c.cend()) == c.size());
92 assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
93 assert(c.max_load_factor() == 1);
94 }
95 #endif
96 #endif // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
97 }
98