Black box testing is an external perspective of the object that is to be TESTED to obtain TEST cases. These tests may be functional or non functional. The valid and invalid inputs are tested by the testers to determine the correct output. Black box testing focuses on functional requirements testing.

ALSO KNOWN as glass box testing is used for testing design test cases which are internal in structure. It demands programming skills for identifying the paths through the software. The test inputs are chosen by the tester to exercise paths through the CODE to determine the outputs that are appropriate.

Black box testing is an external perspective of the object that is to be tested to obtain test cases. These tests may be functional or non functional. The valid and invalid inputs are tested by the testers to determine the correct output. Black box testing focuses on functional requirements testing.

Also known as glass box testing is used for testing design test cases which are internal in structure. It demands programming skills for identifying the paths through the software. The test inputs are chosen by the tester to exercise paths through the code to determine the outputs that are appropriate.