Domain primer for testers
Use the model as a patient explainer of an unfamiliar domain — insurance, payroll, logistics, clinical workflows — so you can recognise what correct looks like before you start testing.
How it works
Testing in a domain you don't know means missing the bugs that only a domain expert would notice. The model is used to get up to speed: explain the core concepts and their vocabulary, walk through a typical case end to end, list the rules practitioners rely on, and describe the edge cases that cause trouble in practice — leap years in payroll, partial shipments in logistics, retroactive changes in insurance. The most useful prompt for testing is "what would an experienced practitioner immediately notice was wrong?", because that is the oracle a newcomer lacks. Pairing the explanation with the product's own documentation lets the model point out where the product's terms differ from the domain's usual ones.
When to use it
At the start of an engagement in an unfamiliar industry; before talking to domain experts, so the time with them goes on the hard questions rather than the basics; and when test ideas keep coming out generic because the domain rules aren't yet known.
Limitations
General domain knowledge is not the client's domain knowledge: local regulation, house rules and contractual exceptions are exactly what the model won't know, and are often where the bugs are. Explanations are fluent whether or not they are right, and a newcomer is the person least able to tell. Rules change — tax rates, legal thresholds, industry standards — and the model's knowledge has a date on it.
Watch for
The primer gives the usual rule, say tax rounded per invoice, the tester uses it as the expected result, and behaviour that breaks the client’s per-line rule passes. Note where each rule you test against came from, and confirm primer-only rules with a domain expert first.
What you still own
Confirming anything you'll rely on with a domain expert or a primary source, and knowing which parts of the primer are general background versus rules for this product.
Cite this
Qlarify Labs. (2026). Domain primer for testers. Retrieved from https://labs.qlarify.fi/ai-in-testing/domain-primer-for-testers