1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 // UNSUPPORTED: c++03, c++11, c++14, c++17
9
10 // <chrono>
11 // class year_month;
12
13 // constexpr bool operator==(const year_month& x, const year_month& y) noexcept;
14 // Returns: x.year() == y.year() && x.month() == y.month().
15 //
16 // constexpr bool operator< (const year_month& x, const year_month& y) noexcept;
17 // Returns:
18 // If x.year() < y.year() returns true.
19 // Otherwise, if x.year() > y.year() returns false.
20 // Otherwise, returns x.month() < y.month().
21
22 #include <chrono>
23 #include <type_traits>
24 #include <cassert>
25
26 #include "test_macros.h"
27 #include "test_comparisons.h"
28
main(int,char **)29 int main(int, char**)
30 {
31 using year = std::chrono::year;
32 using month = std::chrono::month;
33 using year_month = std::chrono::year_month;
34
35 AssertComparisons6AreNoexcept<year_month>();
36 AssertComparisons6ReturnBool<year_month>();
37
38 static_assert( testComparisons6(
39 year_month{year{1234}, std::chrono::January},
40 year_month{year{1234}, std::chrono::January},
41 true, false), "");
42
43 static_assert( testComparisons6(
44 year_month{year{1234}, std::chrono::January},
45 year_month{year{1234}, std::chrono::February},
46 false, true), "");
47
48 static_assert( testComparisons6(
49 year_month{year{1234}, std::chrono::January},
50 year_month{year{1235}, std::chrono::January},
51 false, true), "");
52
53 // same year, different months
54 for (unsigned i = 1; i < 12; ++i)
55 for (unsigned j = 1; j < 12; ++j)
56 assert((testComparisons6(
57 year_month{year{1234}, month{i}},
58 year_month{year{1234}, month{j}},
59 i == j, i < j )));
60
61 // same month, different years
62 for (int i = 1000; i < 20; ++i)
63 for (int j = 1000; j < 20; ++j)
64 assert((testComparisons6(
65 year_month{year{i}, std::chrono::January},
66 year_month{year{j}, std::chrono::January},
67 i == j, i < j )));
68
69 return 0;
70 }
71