Explain about 3 coverage schemes in white box testing.

Explain about 3 coverage schemes in white box testing.

Statement Coverage: In this scheme, statements of the code are tested for a successful test that checks all the statements lying on the path of a successful scenario.
Branch Coverage: In this scheme, all the possible branches of decision structures are tested. Therefore, sequences of statements following a decision are tested. 
Path Coverage: In path coverage, all possible paths of a program from input instruction to the output instruction are tested. An exhaustive list of test cases is generated and tested against the code.