Chapter 4 – Test Analysis & Design
Random Testing – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A black-box test design technique where test cases are selected, possibly using a pseudo-random generation algorithm, to match an operational profile.
In simple words
Generate inputs at random (often weighted by how users actually use the system) instead of hand-picking them.
Exam tip
Random testing complements systematic techniques — it finds surprises specification-based tests would miss.
Related terms
- Fuzz TestingBombard the system with malformed, random or unexpected inputs and see what breaks.
- Operational ProfileA weighted map of how real users spend their time in the system — used to focus testing on high-usage flows.
- Statistical TestingPick test inputs by sampling from a statistical model of real usage instead of choosing them by hand.
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