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 // test constexpr bool test(size_t pos) const;
11 
12 #include <bitset>
13 #include <cstdlib>
14 #include <cassert>
15 
16 #include "test_macros.h"
17 
18 template <std::size_t N>
19 std::bitset<N>
make_bitset()20 make_bitset()
21 {
22     std::bitset<N> v;
23     for (std::size_t i = 0; i < N; ++i)
24         v[i] = static_cast<bool>(std::rand() & 1);
25     return v;
26 }
27 
28 template <std::size_t N>
test_test(bool test_throws)29 void test_test(bool test_throws)
30 {
31     const std::bitset<N> v1 = make_bitset<N>();
32 #ifdef TEST_HAS_NO_EXCEPTIONS
33     if (test_throws) return;
34 #else
35     try
36     {
37 #endif
38         bool b = v1.test(50);
39         if (50 >= v1.size())
40             assert(false);
41         assert(b == v1[50]);
42         assert(!test_throws);
43 #ifndef TEST_HAS_NO_EXCEPTIONS
44     }
45     catch (std::out_of_range&)
46     {
47         assert(test_throws);
48     }
49 #endif
50 }
51 
main()52 int main()
53 {
54     test_test<0>(true);
55     test_test<1>(true);
56     test_test<31>(true);
57     test_test<32>(true);
58     test_test<33>(true);
59     test_test<63>(false);
60     test_test<64>(false);
61     test_test<65>(false);
62     test_test<1000>(false);
63 }
64