User Testing

  User testing is a completely different thing and nevertheless a mixture of all other black box tests . A typical user gets the whole product -- certainly including all documentations -- to work with it alone. The main goal  is to prove that the application  is not suited for the user's requirements .

The first impression about this test method is usually: is it really worth the trouble? A typical user does normally not know a lot about testing, and since he is probably not a good programmer, he does not know about probable bugs. However, these are exactly his advantages. He has a different point of view, and so he finds other bugs programmers and testers might not think of. Additionally, his tries are lots more user orientated, especially when reading the documentation or using the online help system. Since the programmers do not really use the documentation  or the online help system, the user is probably the best tester for this field.