Boundary Value Testing is the most well-known and simple technique of test design, which helps the tester choose the most effective values from the ranges of values. This technique is applicable at all levels of testing – unit, integration, system, and system-integration test levels.
We consider the steps of using of the equivalence classes technique:
1.Determining the range of values (usually, the equivalence class).
2.Determination of the boundary range.
3.Creating three test cases for each boundary – one that checks the border value; second that checks the value below boundary; and the third that checks the value above boundary.