Table of Contents
Boundary Value Analysis (BVA) is a testing technique used to identify errors at the boundaries of input ranges. It helps testers focus on the edges where defects are most likely to occur. This method is essential for ensuring software behaves correctly under various input conditions.
What is Boundary Value Analysis?
Boundary Value Analysis involves testing the limits of input data. Instead of testing all possible inputs, testers concentrate on values at, just below, and just above the boundaries. This approach increases the likelihood of discovering defects related to input limits.
How to Apply Boundary Value Analysis
To apply BVA, identify the valid input ranges for each input parameter. Then, select test cases at the lower and upper boundaries, as well as just outside these boundaries. This ensures coverage of potential edge cases that could cause errors.
Example of Boundary Value Analysis
Consider a form that accepts age between 18 and 65. Using BVA, test cases would include:
- Age = 17 (just below the lower boundary)
- Age = 18 (at the lower boundary)
- Age = 65 (at the upper boundary)
- Age = 66 (just above the upper boundary)