Hey everyone! I’ve been working on a Gmail extension that uses external API calls and shows information using cards. Although it’s working correctly, I’m unsure how to test it properly. I need to set up unit and integration tests that can run on continuous integration platforms. The challenge is that the extension depends on classes like CardService, OAuth2, and GmailApp that only work in the App Script environment. Mocking all these functions is quite challenging. Has anyone successfully created tests for their Gmail extensions that run on CI services? Any advice would be much appreciated!
I’ve faced similar challenges with Gmail extensions. One approach that worked well for me was to create a mock environment that simulates the Apps Script context. I built wrapper classes for CardService, OAuth2, and GmailApp that mimicked their behavior. This allowed me to run tests locally and in CI pipelines.
For API calls, I used a library like Nock to intercept and mock HTTP requests. This way, I could test different API response scenarios without hitting real endpoints.
To handle the OAuth flow, I set up a separate test account and generated long-lived tokens for testing. This isn’t ideal, but it helped cover more ground in integration tests.
Remember, while these methods aren’t perfect, they can significantly improve your test coverage and catch many issues before they reach production. It’s a balance between effort and benefit, but in my experience, it’s worth investing time in a solid testing strategy for Gmail extensions.
hey mate, i’ve been there. testing gmail extensions is a pain! have u tried mocking the api calls? that might help. also, u could set up a test environment that mimics the apps script stuff. it’s not perfect, but it’s better than nothing. good luck!
As someone who’s developed and tested Gmail extensions, I can share a few strategies that have worked for me.
First, focus on unit testing the core logic of your extension that doesn’t directly interact with Google services. This approach allows you to validate much of your functionality independently.
For integration testing, I’ve found success by employing a combination of mocking libraries and creating stub versions of the Google services. Although it’s not a perfect solution, it covers many scenarios.
Additionally, consider setting up a separate test account and using Google Apps Script’s built-in testing features for end-to-end validation to catch issues that automated tests might overlook.