ceph/src/boost/libs/any/test/test.hpp

   1 // what:  simple unit test framework
   2 // who:   developed by Kevlin Henney
   3 // when:  November 2000
   4 // where: tested with BCC 5.5, MSVC 6.0, and g++ 2.91
   5
   6 #ifndef TEST_INCLUDED
   7 #define TEST_INCLUDED
   8
   9 #include <boost/config.hpp>
  10 #include <exception>
  11 #include <iostream>
  12 #ifdef BOOST_NO_STRINGSTREAM
  13 #include <strstream> // for out-of-the-box g++ pre-2.95.3
  14 #else
  15 #include <sstream>
  16 #endif
  17 #include <string>
  18
  19 namespace any_tests // test tuple comprises name and nullary function (object)
  20 {
  21     template<typename string_type, typename function_type>
  22     struct test
  23     {
  24         string_type   name;
  25         function_type action;
  26
  27         static test make(string_type name, function_type action)
  28         {
  29             test result; // MSVC aggreggate initializer bugs
  30             result.name   = name;
  31             result.action = action;
  32             return result;
  33         }
  34     };
  35 }
  36
  37 namespace any_tests // failure exception used to indicate checked test failures
  38 {
  39     class failure : public std::exception
  40     {
  41     public: // struction (default cases are OK)
  42
  43         failure(const std::string & why) throw()
  44           : reason(why)
  45         {
  46         }
  47
  48               ~failure() throw() {}
  49
  50     public: // usage
  51
  52         virtual const char * what() const throw()
  53         {
  54             return reason.c_str();
  55         }
  56
  57     private: // representation
  58
  59         std::string reason;
  60
  61     };
  62 }
  63
  64 namespace any_tests // not_implemented exception used to mark unimplemented tests
  65 {
  66     class not_implemented : public std::exception
  67     {
  68     public: // usage (default ctor and dtor are OK)
  69
  70         virtual const char * what() const throw()
  71         {
  72             return "not implemented";
  73         }
  74
  75     };
  76 }
  77
  78 namespace any_tests // test utilities
  79 {
  80     inline void check(bool condition, const std::string & description)
  81     {
  82         if(!condition)
  83         {
  84             throw failure(description);
  85         }
  86     }
  87
  88     inline void check_true(bool value, const std::string & description)
  89     {
  90         check(value, "expected true: " + description);
  91     }
  92
  93     inline void check_false(bool value, const std::string & description)
  94     {
  95         check(!value, "expected false: " + description);
  96     }
  97
  98     template<typename lhs_type, typename rhs_type>
  99     void check_equal(
 100         const lhs_type & lhs, const rhs_type & rhs,
 101         const std::string & description)
 102     {
 103         check(lhs == rhs, "expected equal values: " + description);
 104     }
 105
 106     template<typename lhs_type, typename rhs_type>
 107     void check_unequal(
 108         const lhs_type & lhs, const rhs_type & rhs,
 109         const std::string & description)
 110     {
 111         check(lhs != rhs, "expected unequal values: " + description);
 112     }
 113
 114     inline void check_null(const void * ptr, const std::string & description)
 115     {
 116         check(!ptr, "expected null pointer: " + description);
 117     }
 118
 119     inline void check_non_null(const void * ptr, const std::string & description)
 120     {
 121         check(ptr != 0, "expected non-null pointer: " + description);
 122     }
 123 }
 124
 125 #define TEST_CHECK_THROW(expression, exception, description) \
 126     try \
 127     { \
 128         expression; \
 129         throw ::any_tests::failure(description); \
 130     } \
 131     catch(exception &) \
 132     { \
 133     }
 134
 135 namespace any_tests // memory tracking (enabled if test new and delete linked in)
 136 {
 137     class allocations
 138     {
 139     public: // singleton access
 140
 141         static allocations & instance()
 142         {
 143             static allocations singleton;
 144             return singleton;
 145         }
 146
 147     public: // logging
 148
 149         void clear()
 150         {
 151             alloc_count = dealloc_count = 0;
 152         }
 153
 154         void allocation()
 155         {
 156             ++alloc_count;
 157         }
 158
 159         void deallocation()
 160         {
 161             ++dealloc_count;
 162         }
 163
 164     public: // reporting
 165
 166         unsigned long allocated() const
 167         {
 168             return alloc_count;
 169         }
 170
 171         unsigned long deallocated() const
 172         {
 173             return dealloc_count;
 174         }
 175
 176         bool balanced() const
 177         {
 178             return alloc_count == dealloc_count;
 179         }
 180
 181     private: // structors (default dtor is fine)
 182
 183         allocations()
 184           : alloc_count(0), dealloc_count(0)
 185         {
 186         }
 187
 188     private: // prevention
 189
 190         allocations(const allocations &);
 191         allocations & operator=(const allocations &);
 192
 193     private: // state
 194
 195         unsigned long alloc_count, dealloc_count;
 196
 197     };
 198 }
 199
 200 namespace any_tests // tester is the driver class for a sequence of tests
 201 {
 202     template<typename test_iterator>
 203     class tester
 204     {
 205     public: // structors (default destructor is OK)
 206
 207         tester(test_iterator first_test, test_iterator after_last_test)
 208           : begin(first_test), end(after_last_test)
 209         {
 210         }
 211
 212     public: // usage
 213
 214         bool operator()(); // returns true if all tests passed
 215
 216     private: // representation
 217
 218         test_iterator begin, end;
 219
 220     private: // prevention
 221
 222         tester(const tester &);
 223         tester &operator=(const tester &);
 224
 225     };
 226
 227 #if defined(__GNUC__) && defined(__SGI_STL_PORT) && (__GNUC__ < 3)
 228     // function scope using declarations don't work:
 229     using namespace std;
 230 #endif
 231
 232     template<typename test_iterator>
 233     bool tester<test_iterator>::operator()()
 234     {
 235         using std::cerr;
 236         using std::endl;
 237         using std::ends;
 238         using std::exception;
 239         using std::flush;
 240         using std::string;
 241
 242         unsigned long passed = 0, failed = 0, unimplemented = 0;
 243
 244         for(test_iterator current = begin; current != end; ++current)
 245         {
 246             cerr << "[" << current->name << "] " << flush;
 247             string result = "passed"; // optimistic
 248
 249             try
 250             {
 251                 allocations::instance().clear();
 252                 current->action();
 253
 254                 if(!allocations::instance().balanced())
 255                 {
 256                     unsigned long allocated   = allocations::instance().allocated();
 257                     unsigned long deallocated = allocations::instance().deallocated();
 258 #ifdef BOOST_NO_STRINGSTREAM
 259                     std::ostrstream report;
 260 #else
 261                     std::ostringstream report;
 262 #endif
 263                     report << "new/delete ("
 264                            << allocated << " allocated, "
 265                            << deallocated << " deallocated)"
 266                            << ends;
 267                     const string text = report.str();
 268 #ifdef BOOST_NO_STRINGSTREAM
 269                     report.freeze(false);
 270 #endif
 271                     throw failure(text);
 272                 }
 273
 274                 ++passed;
 275             }
 276             catch(const failure & caught)
 277             {
 278                 (result = "failed: ") += caught.what();
 279                 ++failed;
 280             }
 281             catch(const not_implemented &)
 282             {
 283                 result = "not implemented";
 284                 ++unimplemented;
 285             }
 286             catch(const exception & caught)
 287             {
 288                 (result = "exception: ") += caught.what();
 289                 ++failed;
 290             }
 291             catch(...)
 292             {
 293                 result = "failed with unknown exception";
 294                 ++failed;
 295             }
 296
 297             cerr << result << endl;
 298         }
 299
 300         cerr << (passed + failed) << " tests: "
 301              << passed << " passed, "
 302              << failed << " failed";
 303
 304         if(unimplemented)
 305         {
 306             cerr << " (" << unimplemented << " not implemented)";
 307         }
 308
 309         cerr << endl;
 310
 311         return failed == 0;
 312     }
 313 }
 314
 315 #endif
 316
 317 // Copyright Kevlin Henney, 2000. All rights reserved.
 318 //
 319 // Distributed under the Boost Software License, Version 1.0. (See
 320 // accompanying file LICENSE_1_0.txt or copy at
 321 // http://www.boost.org/LICENSE_1_0.txt)