Automated Testing Strategy for Web App

14 items · Technical · Hard difficulty · 2 hours

Plan and implement a reliable automated testing strategy for your web app.

• Define testing pyramid and target ratios

  Document desired % split across unit/integration/E2E for your app and team constraints.

• Set unit test target percentage

  Pick a realistic range (e.g., 60–80%) and record it as the primary coverage goal.

• Set integration and E2E target percentages

  Assign remaining coverage to integration (e.g., 20%) and minimal E2E (e.g., 5–10%).

• Define unit coverage thresholds and enforcement

  Choose line/branch targets and configure CI to fail builds when thresholds drop.

• Design API integration test suite and environments

  Specify contract, auth, edge-case, and error-path tests and where they run (staging/ci).

• Select critical E2E user paths to test

  Prioritize high-value flows like signup, login, checkout, and main data workflows.

• Create test data management plan

  Define fixtures, factories, seeding, isolation, and teardown approach for reliable tests.

• Implement CI gates for test stages

  Enforce order: unit → integration → gated E2E; block merges on failures above thresholds.

• Configure parallel and staged test execution in CI

  Split suites, use workers and caching to keep overall CI time manageable.

• Set flaky test detection and quarantine policy

  Automatically tag flaky tests after repeat failures and require triage within a timeframe.

• Establish test reporting and dashboard visibility

  Expose pass rates, failure trends, and flaky counts to the team via dashboards or PR badges.

• Automate test environment provisioning and cleanup

  Use containers, infra-as-code, and teardown scripts to ensure consistent test environments.

• Schedule periodic test suite review and pruning

  Review tests monthly/quarterly to remove duplicates and slow or brittle tests.

• Train team on writing reliable tests and anti-flakiness patterns

  Share guidelines: avoid sleeps, use stable selectors, mock external services when appropriate.

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