Another expectation class is ConstraintList. It is similar to the former ExpectationList but offers more flexibility by using constraint classes to check the validity of the actual parameters. Instead of a value you pass the according object which is then used to verify the actual value. The usage of the constraint classes is explained in the chapter about ChainingMockObjects.

  ConstraintList <int> cl ("verifyValue", 0);

  cl.addExpected(new IsGreaterOrEqual<int>(10)); 
  cl.addExpected(new IsLessOrEqual<int>(20));    

  cl.addActual(13);
  cl.addActual(23);