3.6Common Mistakes in Pipeline Test Structure

Running Everything on Every Push

If browser tests run on every push, developers wait 20 minutes for feedback on a one-line fix. Run only fast tests on push; save expensive tests for PR and merge events.

Skipping the Integration Layer

Teams often jump from unit tests to browser tests, missing the integration layer. This means bugs in database queries, API contracts, or service interactions are only caught by slow, brittle E2E tests.

Not Failing Fast Enough

If unit tests are broken, do not waste compute running integration and browser tests. Use job dependencies (needs) to create a pipeline where each stage gates the next.

Identical Tests at Multiple Stages

If your integration tests already verify the login API, your browser tests do not need to test login through the API again. Browser tests should focus on UI behavior that cannot be tested at lower levels.