firestore-testing-repro

Overview

See: firebase-js-sdk issue #5825

This repository demonstrates a bug with @firebase/rules-unit-testing and/or firebase-js-sdk/firestore (incompatibility between the two).

With @firebase/rules-unit-testing@2.0.1 and firebase >=9.0.0 <=9.1.3, the test utilities work whether loaded as a cjs require or an es6 module. After upgrading to firebase >=9.2.0, the utilities no longer work when loaded as es6 module, but still work when loaded with cjs require.

Steps to reproduce

1. install dependency: Firebase Emulators

2. clone this repository and install npm modules

   git clone https://github.com/kenkunz/firestore-testing-repro.git
   cd firestore-testing-repro
   npm install

3. run the tests

   npm run test

   Note that both test.js and test.cjs complete successfully

4. upgrade to firebase@9.2.0 (or greater)

   npm i -D firebase@9.2.0

5. run the tests again

   npm run test

   Note that test.cjs still passes but test.js fails (see error output below)

Error output

FirebaseError: Expected first argument to collection() to be a CollectionReference, a DocumentReference or FirebaseFirestore
at doc (file:///Users/ken/Code/firestore-testing-repro/node_modules/@firebase/firestore/dist/index.node.mjs:19998:19)
at file:///Users/ken/Code/firestore-testing-repro/test.js:8:20
at RulesTestEnvironmentImpl.<anonymous> (node_modules/@firebase/rules-unit-testing/dist/index.cjs.js:310:46)
at step (node_modules/@firebase/rules-unit-testing/dist/index.cjs.js:74:23)
at Object.next (node_modules/@firebase/rules-unit-testing/dist/index.cjs.js:55:53)
at /Users/ken/Code/firestore-testing-repro/node_modules/@firebase/rules-unit-testing/dist/index.cjs.js:48:71
at new Promise (<anonymous>)
at __awaiter (node_modules/@firebase/rules-unit-testing/dist/index.cjs.js:44:12)
at RulesTestEnvironmentImpl.withSecurityRulesDisabled (node_modules/@firebase/rules-unit-testing/dist/index.cjs.js:300:16)
at Context.<anonymous> (file:///Users/ken/Code/firestore-testing-repro/test.js:7:19)
at processTicksAndRejections (node:internal/process/task_queues:96:5)