Test quarantine

What it covers

Test quarantine clarifies who runs it, when it runs, and what decision its result supports. Start by naming the risk or behavior, then choose observations that can distinguish an acceptable result from a failure. Good test design records enough context for another engineer to understand why the check exists, what it proves, and what it deliberately leaves to another layer. This makes test results useful during development, review, release decisions, and later investigation.

How teams apply it

Consider an API that accepts a request, writes an order, and emits an event. A test quarantine example should name the boundary under test, use controlled data, and verify the observable contract. The test can stay small while still exposing an important integration risk. The surrounding workflow should keep the test close enough to the change to provide timely feedback, while still preserving the independence and realism needed for the claim. Teams can document setup, inputs, expected results, cleanup, and ownership so maintenance does not depend on tribal knowledge.

Limitations

The main limitation is scope. A passing test quarantine check can miss behavior outside its chosen boundary, unusual data, configuration differences, or a failure in the test itself. Keep the claim narrower than the result. Use the result with test coverage, code review, production signals, and incident learning as appropriate. A quality practice is strongest when its evidence is connected to the risk it is meant to reduce.

How Weave relates

Weave can provide delivery and engineering-intelligence context around test quarantine, including change activity, review signals, rework, and quality outcomes. That context can help teams see whether a testing practice is improving feedback or correlates with recurring failure patterns. Weave does not execute tests, certify assertions, or replace the test system as the source of truth.