insert_const_lvalue.pass.cpp revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976 
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_set>
11
12// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
13//           class Alloc = allocator<Value>>
14// class unordered_set
15
16// pair<iterator, bool> insert(const value_type& x);
17
18#include <unordered_set>
19#include <cassert>
20
21int main()
22{
23    {
24        typedef std::unordered_set<double> C;
25        typedef std::pair<C::iterator, bool> R;
26        typedef C::value_type P;
27        C c;
28        R r = c.insert(P(3.5));
29        assert(c.size() == 1);
30        assert(*r.first == 3.5);
31        assert(r.second);
32
33        r = c.insert(P(3.5));
34        assert(c.size() == 1);
35        assert(*r.first == 3.5);
36        assert(!r.second);
37
38        r = c.insert(P(4.5));
39        assert(c.size() == 2);
40        assert(*r.first == 4.5);
41        assert(r.second);
42
43        r = c.insert(P(5.5));
44        assert(c.size() == 3);
45        assert(*r.first == 5.5);
46        assert(r.second);
47    }
48}
49