Equivalence Partitioning & Boundary Value Analysis

Summary

Equivalence partitioning groups inputs into classes that should behave the same way (testing one representative per class); boundary value analysis specifically tests the edges of those classes, where bugs cluster most often.

• 1Apply equivalence partitioning to a sample input field (e.g. an age field accepting 1-120).
• 2Identify the boundary values for that same field and design test cases around them.
• 3Learn why off-by-one errors make boundaries the highest-value place to focus testing.