n8n-integration-testing-patterns

Integration testing for n8n nodes validates API connectivity, authentication flows, and operation responses end-to-end. Contract testing verifies that external services return expected data formats and status codes, catching breaking changes before workflows run in production.

Yes. Testing authentication flows covers both OAuth2 and API Key variants, verifying credentials are valid and permissions are correctly scoped. This ensures workflows fail gracefully when auth fails rather than during live execution.

Rate-limit behavior testing simulates throttling scenarios and verifies your workflows respect API quotas. Testing these constraints upfront prevents runtime failures when external services enforce rate limits on repeated calls.

Error scenario testing checks that n8n nodes handle malformed responses, missing fields, and service failures correctly. This pattern applies across common services like Slack, Google Sheets, Jira, and GitHub to ensure consistent error resilience.

Yes. Contract and version compatibility testing validates that API responses match expected schemas across service versions. Drift detection identifies when external APIs change, alerting you to incompatibilities before deployment.

Integration tests execute independently of your workflows, validating connectivity, operations, and error handling in a controlled environment. This isolation lets you verify integrations work before adding them to production workflows.