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Write end-to-end Playwright tests that are resilient, readable, and free of flakiness.
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Basierend auf der SOC-Berufsklassifikation
Write consumer-driven contract tests at service and API boundaries so an incompatible change fails a build instead of breaking integrations silently in production. Use when a client and a service (or two services) must stay in sync across separate deploys — adding a Pact consumer test, replaying a pact file in provider verification, publishing pacts to a Pact Broker / PactFlow, gating with can-i-deploy, or after a renamed field or changed status code broke a consumer that unit tests passed.
Produces a risk-ranked list of untested critical paths and branches, with the specific missing cases and the smallest test that buys the most safety. Use when a coverage report shows high line coverage you do not trust, when deciding what to test next, or when auditing a suite before a release cut — anytime the question is "which gap actually matters," not "what is the percentage."
Converts an acceptance criterion or user story into one maintainable Playwright or Cypress end-to-end test that reads like the journey it covers. Use when turning a Given/When/Then acceptance criterion or user story into a browser test, when asked to "write an E2E test for this AC", or when a feature's critical journey (login, checkout, signup) needs a single automated scenario. Do NOT use when writing general Playwright tests, configuring the runner, or fixing existing test flakiness — use playwright-testing or flaky-test-detangler instead.
Root-causes intermittently failing tests and eliminates the hidden dependency at its source instead of retrying around it. Use when a test passes locally but fails in CI, goes green on a CI re-run, fails roughly one run in ten, or is already tagged "flaky." Do NOT use when the task is to design the fake or stub that replaces a real dependency — use mock-stub-designer instead.
Designs the minimal set of test doubles for a unit or integration test and decides, per dependency, what to fake versus exercise for real. Use when a test touches an external boundary — an HTTP/third-party API, payment or email/SMS SDK, the database, the filesystem, the system clock, or randomness — or when existing tests over-mock and pass while the system is broken.
Runs mutation testing on already-covered code and turns each surviving mutant into a specific missing assertion, exposing tests that execute code but verify nothing. Use when line coverage is high yet a bug slipped through, when reviewing a critical module (pricing, permissions, auth, state machines) before release, or when you are asked to run Stryker, PIT, mutmut, or cosmic-ray. Do NOT use when the goal is to find which code paths are untested at all — use coverage-gap-finder instead.
| name | Playwright Testing |
| description | Write end-to-end Playwright tests that are resilient, readable, and free of flakiness. |
Tests should fail only when the app is broken — never because of timing.
getByRole, getByLabel, getByText.data-testid only when semantics aren't enough.waitForTimeout with a magic number.await expect(locator).toBeVisible()), which retry until true.