template<class T>
struct assertion_traits< T >
Traits used by CPPUNIT_ASSERT* macros. 
Here is an example of specialising these traits:
template<>
{
  static bool equal( 
const std::string& x, 
const std::string& y )
 
  {
    return x == y;
  }
 
  static bool less( 
const std::string& x, 
const std::string& y )
 
  {
     return x < y;
  }
 
  static bool lessEqual( 
const std::string& x, 
const std::string& y )
 
  {
     return x <= y;
  }
 
  static std::string 
toString( 
const std::string& x )
 
  {
    std::string text = '"' + x + '"';    
    OStringStream ost;
    ost << text;
    return ost.str();
  }
};