jpokrzyk / firebase-functions-jest

Demonstrates how to write unit tests in Jest for Firebase Cloud Functions

firebase-functions-jest

Demonstrates how to write unit tests in Jest for Firebase Cloud Functions

Why

The Firebase Cloud Functions Unit Testing documentation and quickstart samples only describe how to write unit tests using Mocha with Sinon and Chai.

I prefer to use Jest for unit tests. For all others who feel the same, I wanted to share my code that replicates the Mocha tests in Jest.

What

5 different quickstarts showing how to mock and test various aspects of Firebase Cloud Functions.

• email-users
• pubsub-helloworld
• thumbnails
• time-server
• uppercase

What's new in each quickstart project (all interesting code is in the functions folder of each project):

• test/test.spec.js is the new Jest test
• package.json contains a new testWithJest script which will run the Jest test (in addition to the new dev dependencies)

I also threw in some eslint for fun.