Table of Contents
Boundary Value Analysis (BVA) is a testing technique used to identify errors at the boundaries of input domains. It helps ensure that software handles edge cases correctly. This article demonstrates a step-by-step calculation approach to applying BVA in real-world scenarios.
Understanding Boundary Value Analysis
BVA focuses on testing the values at the edges of input ranges, as these are common points where errors occur. Typically, for an input range from minimum to maximum, test cases are created for values just below, at, and just above these boundaries.
Step-by-Step Calculation Approach
The process involves several steps to identify critical test cases based on input boundaries:
- Identify input ranges: Determine the valid input intervals for each parameter.
- Determine boundary values: Find the minimum and maximum values, including values just outside these boundaries.
- Create test cases: Generate test inputs at these boundary points and slightly inside/outside the range.
Example Calculation
Suppose a system accepts an age between 18 and 65. The boundary values are 18 and 65. The test cases would include:
- Age = 17 (just below minimum)
- Age = 18 (minimum boundary)
- Age = 19 (just above minimum)
- Age = 64 (just below maximum)
- Age = 65 (maximum boundary)
- Age = 66 (just above maximum)
These test cases help verify that the system correctly handles boundary conditions and potential edge errors.