Random Testing
Random testing is a test technique in which test inputs are selected randomly from the input domain rather than being derived from specific test design techniques.
“A black-box test technique in which input values are randomly generated.”
(Definition reproduced from the ISTQB Glossary. Copyright belongs to ISTQB.)
View the complete ISTQB GlossaryWhat is Random Testing?
Random testing can expose unexpected defects by exploring combinations and scenarios that structured techniques may not intentionally select.
Random selection: Test cases are generated without predefined patterns.
Broad exploration: May reveal unusual defects.
Complementary approach: Often supplements systematic testing.
Real World Example
A regulated product team is preparing a release where Random testing appears in reviews, test design conversations, or defect triage rather than as an isolated glossary word.
The risk is that the team treats Random testing as interchangeable with nearby ISTQB terms. That makes test scope blurry and can lead to weak evidence for the release decision.
The tester anchors the discussion in the official definition, asks where the concept appears in the product, and designs examples that show the difference between Random testing and similar ideas.
The page becomes useful in practice because Random testing is connected to a specific testing decision, not memorized as a detached definition.
Practice Questions
Question 1
Which statement BEST describes Random testing in the context of ISTQB terminology?
Question 2
A tester needs to explain Random testing to a non‑technical stakeholder. Which approach is MOST appropriate?
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