Chapter 4 – Test Analysis & Design
Loop Testing – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A white-box test design technique in which test cases are designed to exercise loops.
In simple words
Test loops with zero, one, two, typical, N-1, N and N+1 iterations to catch boundary and off-by-one bugs.
Exam tip
Loop testing is a structural technique often paired with boundary value analysis on the loop counter.
Related terms
- Boundary Value AnalysisBugs cluster at the edges of allowed ranges. So if a field accepts 1–100, you test 0, 1, 100, and 101 instead of only picking a value from the middle.
- Path TestingDesign tests so each independent path from entry to exit of a function is executed.
- White-Box TestingYou design tests using knowledge of the code — branches, statements, paths — to hit specific structural coverage targets.
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