WHAT IS BOUNDARY VALUE ANALYSIS IN SOFTWARE TESTING?
Concepts: Boundary value analysis is a methodology for designing test cases that concentrates software testing effort on cases near the limits of valid ranges Boundary value analysis is a method which refines equivalence partitioning. Boundary value analysis generates test cases that highlight errors better than equivalence partitioning. The trick is to concentrate software testing efforts at the extreme ends of the equivalence classes. At those points when input values change from valid to invalid errors are most likely to occur. As well, boundary value analysis broadens the portions of the business requirement document used to generate tests. Unlike equivalence partitioning, it takes into account the output specifications when deriving test cases. HOW DO YOU PERFORM BOUNDARY VALUE ANALYSIS? Once again, you’ll need to perform two steps: 1. Identify the equivalence classes. 2. Design test cases. But the details vary. Let’s examine each step. STEP 1: IDENTIFY EQUIVALENCE CLASSES Follow
