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Making assertions


Defines

#define CPPUNIT_ASSERT(condition)
 Assertions that a condition is true.

#define CPPUNIT_ASSERT_MESSAGE(message, condition)
 Assertion with a user specified message.

#define CPPUNIT_FAIL(message)
 Fails with the specified message.

#define CPPUNIT_ASSERT_EQUAL(expected, actual)
 Asserts that two values are equals.

#define CPPUNIT_ASSERT_EQUAL_MESSAGE(message, expected, actual)
 Asserts that two values are equals, provides additional messafe on failure.

#define CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, actual, delta)
 Macro for primitive value comparisons.

#define CPPUNIT_ASSERT_THROW(expression, ExceptionType)
 Asserts that the given expression throws an exception of the specified type.

#define CPPUNIT_ASSERT_NO_THROW(expression)
 Asserts that the given expression does not throw any exceptions.

#define CPPUNIT_ASSERT_ASSERTION_FAIL(assertion)   CPPUNIT_ASSERT_THROW( assertion, CPPUNIT_NS::Exception )
 Asserts that an assertion fail.

#define CPPUNIT_ASSERT_ASSERTION_PASS(assertion)   CPPUNIT_ASSERT_NO_THROW( assertion )
 Asserts that an assertion pass.

Define Documentation

#define CPPUNIT_ASSERT (  condition   ) 
 

Value:

( CPPUNIT_NS::Asserter::failIf( !(condition),                                   \
                                 CPPUNIT_NS::Message( "assertion failed",         \
                                                      "Expression: " #condition), \
                                 CPPUNIT_SOURCELINE() ) )
Assertions that a condition is true.

#define CPPUNIT_ASSERT_ASSERTION_FAIL (  assertion   )     CPPUNIT_ASSERT_THROW( assertion, CPPUNIT_NS::Exception )
 

Asserts that an assertion fail.

Use to test assertions. Example of usage: 

   CPPUNIT_ASSERT_ASSERTION_FAIL( CPPUNIT_ASSERT( 1 == 2 ) );

#define CPPUNIT_ASSERT_ASSERTION_PASS (  assertion   )     CPPUNIT_ASSERT_NO_THROW( assertion )
 

Asserts that an assertion pass.

Use to test assertions. Example of usage: 

   CPPUNIT_ASSERT_ASSERTION_PASS( CPPUNIT_ASSERT( 1 == 1 ) );

#define CPPUNIT_ASSERT_DOUBLES_EQUAL (  expected,
actual,
delta   ) 
 

Value:

( CPPUNIT_NS::assertDoubleEquals( (expected),        \
                                    (actual),          \
                                    (delta),           \
                                    CPPUNIT_SOURCELINE() ) )
Macro for primitive value comparisons.

#define CPPUNIT_ASSERT_EQUAL (  expected,
actual   ) 
 

Value:

( CPPUNIT_NS::assertEquals( (expected),              \
                              (actual),                \
                              CPPUNIT_SOURCELINE(),    \
                              "" ) )
Asserts that two values are equals.

Equality and string representation can be defined with an appropriate CppUnit::assertion_traits class.

A diagnostic is printed if actual and expected values disagree.

Requirement for expected and actual parameters:

  • They are exactly of the same type
  • They are serializable into a std::strstream using operator <<.
  • They can be compared using operator ==.

The last two requirements (serialization and comparison) can be removed by specializing the CppUnit::assertion_traits.

#define CPPUNIT_ASSERT_EQUAL_MESSAGE (  message,
expected,
actual   ) 
 

Value:

( CPPUNIT_NS::assertEquals( (expected),              \
                              (actual),                \
                              CPPUNIT_SOURCELINE(),    \
                              (message) ) )
Asserts that two values are equals, provides additional messafe on failure.

Equality and string representation can be defined with an appropriate assertion_traits class.

A diagnostic is printed if actual and expected values disagree. The message is printed in addition to the expected and actual value to provide additional information.

Requirement for expected and actual parameters:

  • They are exactly of the same type
  • They are serializable into a std::strstream using operator <<.
  • They can be compared using operator ==.

The last two requirements (serialization and comparison) can be removed by specializing the CppUnit::assertion_traits.

#define CPPUNIT_ASSERT_MESSAGE (  message,
condition   ) 
 

Value:

( CPPUNIT_NS::Asserter::failIf( !(condition),            \
                                  (message),               \
                                  CPPUNIT_SOURCELINE() ) )
Assertion with a user specified message.

Parameters:
message Message reported in diagnostic if condition evaluates to false.
condition If this condition evaluates to false then the test failed.

#define CPPUNIT_ASSERT_NO_THROW (  expression   ) 
 

Value:

try {                                                                   \
      expression;                                                          \
   } catch ( const std::exception &e ) {                                   \
      CPPUNIT_NS::Message message( "Unexpected exception caught" );        \
      message.addDetail( "Type: " +                                        \
                   CPPUNIT_EXTRACT_EXCEPTION_TYPE_( e,                     \
                                       "std::exception or derived" ) );    \
      message.addDetail( std::string("What: ") + e.what() );               \
      CPPUNIT_NS::Asserter::fail( message,                                 \
                                  CPPUNIT_SOURCELINE() );                  \
   } catch ( ... ) {                                                       \
      CPPUNIT_NS::Asserter::fail( "Unexpected exception caught",           \
                                  CPPUNIT_SOURCELINE() );                  \
   }
Asserts that the given expression does not throw any exceptions.

Example of usage: 

   std::vector<int> v;
   v.push_back( 10 );
  CPPUNIT_ASSERT_NO_THROW( v.at( 0 ) );

#define CPPUNIT_ASSERT_THROW (  expression,
ExceptionType   ) 
 

Value:

do {                                                             \
      bool cpputExceptionThrown_ = false;                           \
      try {                                                         \
         expression;                                                \
      } catch ( const ExceptionType & ) {                           \
         cpputExceptionThrown_ = true;                              \
      }                                                             \
                                                                    \
      if ( cpputExceptionThrown_ )                                  \
         break;                                                     \
                                                                    \
      CPPUNIT_NS::Asserter::fail(                                   \
                     "Expected exception: " #ExceptionType          \
                     " not thrown.",                                \
                     CPPUNIT_SOURCELINE() );                        \
   } while ( false )
Asserts that the given expression throws an exception of the specified type.

Example of usage: 

   std::vector<int> v;
  CPPUNIT_ASSERT_THROW( v.at( 50 ), std::out_of_range );

#define CPPUNIT_FAIL (  message   ) 
 

Value:

( CPPUNIT_NS::Asserter::fail( CPPUNIT_NS::Message( "forced failure",  \
                                                     message ),         \
                                CPPUNIT_SOURCELINE() ) )
Fails with the specified message.

Parameters:
message Message reported in diagnostic.

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