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source: downloads/boost_1_33_1/libs/logic/test/tribool_test.cpp @ 12

Last change on this file since 12 was 12, checked in by landauf, 17 years ago

added boost
File size: 3.0 KB
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1// Copyright Douglas Gregor 2002-2003. Use, modification and
2// distribution is subject to the Boost Software License, Version
3// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
4// http://www.boost.org/LICENSE_1_0.txt)
5
6#include <boost/logic/tribool.hpp>
7#include <boost/test/minimal.hpp>
8#include <iostream>
9
10int test_main(int, char*[])
11{
12  using namespace boost::logic;
13
14  tribool x; // false
15  tribool y(true); // true
16  tribool z(indeterminate); // indeterminate
17
18  BOOST_CHECK(!x);
19  BOOST_CHECK(x == false);
20  BOOST_CHECK(false == x);
21  BOOST_CHECK(x != true);
22  BOOST_CHECK(true != x);
23  BOOST_CHECK(indeterminate(x == indeterminate));
24  BOOST_CHECK(indeterminate(indeterminate == x));
25  BOOST_CHECK(indeterminate(x != indeterminate));
26  BOOST_CHECK(indeterminate(indeterminate != x));
27  BOOST_CHECK(x == x);
28  BOOST_CHECK(!(x != x));
29  BOOST_CHECK(!(x && true));
30  BOOST_CHECK(!(true && x));
31  BOOST_CHECK(x || true);
32  BOOST_CHECK(true || x);
33
34  BOOST_CHECK(y);
35  BOOST_CHECK(y == true);
36  BOOST_CHECK(true == y);
37  BOOST_CHECK(y != false);
38  BOOST_CHECK(false != y);
39  BOOST_CHECK(indeterminate(y == indeterminate));
40  BOOST_CHECK(indeterminate(indeterminate == y));
41  BOOST_CHECK(indeterminate(y != indeterminate));
42  BOOST_CHECK(indeterminate(indeterminate != y));
43  BOOST_CHECK(y == y);
44  BOOST_CHECK(!(y != y));
45
46  BOOST_CHECK(indeterminate(z || !z));
47  BOOST_CHECK(indeterminate(z == true));
48  BOOST_CHECK(indeterminate(true == z));
49  BOOST_CHECK(indeterminate(z == false));
50  BOOST_CHECK(indeterminate(false == z));
51  BOOST_CHECK(indeterminate(z == indeterminate));
52  BOOST_CHECK(indeterminate(indeterminate == z));
53  BOOST_CHECK(indeterminate(z != indeterminate));
54  BOOST_CHECK(indeterminate(indeterminate != z));
55  BOOST_CHECK(indeterminate(z == z));
56  BOOST_CHECK(indeterminate(z != z));
57
58  BOOST_CHECK(!(x == y));
59  BOOST_CHECK(x != y);
60  BOOST_CHECK(indeterminate(x == z));
61  BOOST_CHECK(indeterminate(x != z));
62  BOOST_CHECK(indeterminate(y == z));
63  BOOST_CHECK(indeterminate(y != z));
64
65  BOOST_CHECK(!(x && y));
66  BOOST_CHECK(x || y);
67  BOOST_CHECK(!(x && z));
68  BOOST_CHECK(indeterminate(y && z));
69  BOOST_CHECK(indeterminate(z && z));
70  BOOST_CHECK(indeterminate(z || z));
71  BOOST_CHECK(indeterminate(x || z));
72  BOOST_CHECK(y || z);
73
74  BOOST_CHECK(indeterminate(y && indeterminate));
75  BOOST_CHECK(indeterminate(indeterminate && y));
76  BOOST_CHECK(!(x && indeterminate));
77  BOOST_CHECK(!(indeterminate && x));
78
79  BOOST_CHECK(indeterminate || y);
80  BOOST_CHECK(y || indeterminate);
81  BOOST_CHECK(indeterminate(x || indeterminate));
82  BOOST_CHECK(indeterminate(indeterminate || x));
83
84  // Test the if (z) ... else (!z) ... else ... idiom
85  if (z) {
86    BOOST_CHECK(false);
87  }
88  else if (!z) {
89    BOOST_CHECK(false);
90  }
91  else {
92    BOOST_CHECK(true);
93  }
94
95  z = true;
96  if (z) {
97    BOOST_CHECK(true);
98  }
99  else if (!z) {
100    BOOST_CHECK(false);
101  }
102  else {
103    BOOST_CHECK(false);
104  }
105
106  z = false;
107  if (z) {
108    BOOST_CHECK(false);
109  }
110  else if (!z) {
111    BOOST_CHECK(true);
112  }
113  else {
114    BOOST_CHECK(false);
115  }
116
117  std::cout << "no errors detected\n";
118  return 0;
119}
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