Review questions — Testing and quality foundations

Subject synthesis: Testing and quality foundations

Quality testing separates the requested rule, observed result, and remaining assumption. Three delivered messages establish delivery only for those attempts; they do not prove correct storage or usefulness to every user. Identify the quality attribute, environment, inputs, expected outcome and observation before making a claim. An ambiguous rule, such as a missing time-zone label, needs a clarified meaning. Test levels locate where evidence can be collected without naming an unproved root cause. Static review can expose a contradictory rule before code runs, while execution shows behaviour. Verification asks whether the implementation follows a specification; validation asks whether the service meets a user need. The subject closes with an evidence record that names passed, failed and unperformed cases and proposes the next check for each consequential gap.