n8n-workflow-testing-fundamentals

Data-flow validation checks inter-node connections and mappings to ensure data passes correctly between workflow steps. This Skill traces how output from one node connects to input fields in downstream nodes, catching mismatches, missing fields, and transformation errors before execution.

Error handling testing builds and validates retry logic, fallback paths, and failure responses across workflow nodes. This Skill assesses error branches, credentials under failure conditions, and execution states to ensure workflows recover gracefully from integration failures and data issues.

End-to-end workflow testing validates the complete execution lifecycle—start, run, and end states—using realistic test data across triggers, actions, logic, and integrations. This Skill applies TypeScript test suites and rule-based validation to confirm structural integrity and functional requirements.

Credential verification automates authentication and integration setup validation across workflow nodes. This Skill checks that credentials are correctly configured and accessible before deployment, preventing runtime authentication failures in development, staging, and pre-deployment scenarios.

Structural validation detects connection gaps, missing credentials, invalid node configurations, and unhandled failure paths. This Skill enforces technical and functional requirements through automated checks, identifying issues in triggers, actions, logic nodes, and integrations before workflows reach production.

Performance testing evaluates execution efficiency across integrated services and data mappings. This Skill includes performance validation alongside structural and data-flow checks to ensure workflows execute reliably under typical operational conditions.