Homework2

Question

 

①Identify the fault.

 Software Fault: A static defect in the software

 Software Failure: External, incorrect behavior with respect to the requirements or other description of the expected behavior

 Software Error: An incorrect internal state that is the manifestation of some fault

②If possible, identify a test case that does not execute the fault. (Reachability)

test: x= NULL; y = 0

test: x= NULL

③If possible, identify a test case that executes the fault, but does not result in an error state.

test: x=[2, 3, 5]; y = 2

test: x= [0, 1, 0]

④If possible identify a test case that results in an error, but not a failure.

test: x=[2, 3, 5]; y = 1

test: x= [1, 0, 1]