How to Write Tests for CMS Integrations
AdvancedQuick Answer
TL;DR
Testing a content management system integration means covering three layers: unit tests for content transformation functions, integration tests for API queries and data fetching, and end-to-end tests for content rendering. Mock CMS API responses in unit and integration tests to avoid hitting the live API. Focus your test coverage on schema validation, content rendering with varied data shapes, error handling for missing fields, and preview mode behavior.
Key Takeaways
- Test content transformers and serializers with unit tests using fixture data
- Mock the CMS client/SDK in integration tests — don't hit the live API in CI
- Write end-to-end tests for critical content rendering paths and preview mode
- Test error states: missing fields, null references, malformed content
- Use typed fixture data that matches your CMS schema to catch shape mismatches early