assertion.h
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1 /*
2  * Copyright (C) 2005-2008 by Dr. Marc Boris Duerner
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
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11  * instantiate templates or use macros or inline functions from this
12  * file, or you compile this file and link it with other files to
13  * produce an executable, this file does not by itself cause the
14  * resulting executable to be covered by the GNU General Public
15  * License. This exception does not however invalidate any other
16  * reasons why the executable file might be covered by the GNU Library
17  * General Public License.
18  *
19  * This library is distributed in the hope that it will be useful,
20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22  * Lesser General Public License for more details.
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27  */
28 #ifndef CXXTOOLS_ASSERTION_H
29 #define CXXTOOLS_ASSERTION_H
30 
31 #include "cxxtools/sourceinfo.h"
32 #include <stdexcept>
33 #include <iostream>
34 #include <sstream>
35 
36 namespace cxxtools {
37 
38 namespace unit {
39 
59  class Assertion
60  {
61  public:
72  Assertion(const std::string& what, const SourceInfo& si);
73 
74  const SourceInfo& sourceInfo() const;
75 
76  const char* what() const { return _what.c_str(); }
77 
78  private:
79  SourceInfo _sourceInfo;
80  std::string _what;
81  };
82 
83  #define CXXTOOLS_UNIT_ASSERT(cond) \
84  do { \
85  if( !(cond) ) \
86  throw cxxtools::unit::Assertion(#cond, CXXTOOLS_SOURCEINFO); \
87  } while (false)
88 
89  #define CXXTOOLS_UNIT_ASSERT_MSG(cond, what) \
90  do { \
91  if( !(cond) ) \
92  { \
93  std::ostringstream _cxxtools_msg; \
94  _cxxtools_msg << what; \
95  throw cxxtools::unit::Assertion(_cxxtools_msg.str(), CXXTOOLS_SOURCEINFO); \
96  } \
97  } while (false)
98 
99  #define CXXTOOLS_UNIT_ASSERT_EQUALS(value1, value2) \
100  do { \
101  if( ! ((value1) == (value2)) ) \
102  { \
103  std::ostringstream _cxxtools_msg; \
104  _cxxtools_msg << "not equal:\n\tvalue1 (" #value1 ")=\n\t\t<" << value1 << ">\n\tvalue2 (" #value2 ")=\n\t\t<" << value2 << '>'; \
105  throw cxxtools::unit::Assertion(_cxxtools_msg.str(), CXXTOOLS_SOURCEINFO); \
106  } \
107  } while (false)
108 
109  #define CXXTOOLS_UNIT_ASSERT_THROW(cond, EX) \
110  do { \
111  struct _cxxtools_ex { }; \
112  try \
113  { \
114  cond; \
115  throw _cxxtools_ex(); \
116  } \
117  catch(const _cxxtools_ex &) \
118  { \
119  std::ostringstream _cxxtools_msg; \
120  _cxxtools_msg << "exception of type " #EX " expected in " #cond; \
121  throw cxxtools::unit::Assertion(_cxxtools_msg.str(), CXXTOOLS_SOURCEINFO); \
122  } \
123  catch(const EX &) \
124  {} \
125  } while (false)
126 
127  #define CXXTOOLS_UNIT_ASSERT_NOTHROW(cond) \
128  do { \
129  try { \
130  \
131  cond; \
132  } \
133  catch(const std::exception& e) \
134  { \
135  throw cxxtools::unit::Assertion( \
136  std::string("unexpected exception of type ") + typeid(e).name() + ": " + e.what(), \
137  CXXTOOLS_SOURCEINFO); \
138  } \
139  catch(const cxxtools::unit::Assertion&) \
140  { \
141  throw; \
142  } \
143  catch(...) \
144  { \
145  throw cxxtools::unit::Assertion("unexpected exception." , CXXTOOLS_SOURCEINFO); \
146  } \
147  } while (false)
148 
149  #define CXXTOOLS_UNIT_FAIL(what) \
150  do { \
151  std::ostringstream _cxxtools_msg; \
152  _cxxtools_msg << what; \
153  throw cxxtools::unit::Assertion(_cxxtools_msg.str(), CXXTOOLS_SOURCEINFO); \
154  } while (false)
155 
156 } // namespace unit
157 
158 } // namespace cxxtools
159 
160 #endif