Exaplining about Testing Levels and Methods?

• Testing is the processing to test an application with an intention of finding defects or errors.
• In Testing,Four levels are available.

         They are :     1.Unit Testing

                          2.Integration Testing

                          3.System Testing

                          4.User Acceptance Testing

Note: 

  A. Unit Testing and Integration Testing combination is called "White-box Testing" & White-box testing means test the program by programmer,not the application.

  B. Collection of System Testing and User Acceptance Testing is called " Block-box Testing" & Block-box Testing means test an application by Quality Analyst/Client,not the program.

• In Testing, 2 methods are available.They are

                  1.White-Box Testing

                  2.Block-Box Testing