Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Error message improvement for testing security rules

See original GitHub issue

Environment info

Operating System version: Fedora 32
Browser version: Firefox 79
Firebase SDK version: 0.20.11
Firebase: 8.9.0
Firebase Product: Firestore, Emulator
node: v14.8.0
npm: 6.14.7

Test case

package.json

{
  "name": "security_rules",
  "version": "1.0.0",
  "description": "Unit testing for security rules",
  "main": "test.js",
  "scripts": {
    "test": "mocha --exit"
  },
  "author": "me",
  "license": "ISC",
  "devDependencies": {
    "@firebase/testing": "^0.20.11",
    "mocha": "^8.1.1"
  }
}

firestore_rules.json

rules_version = '1';
service cloud.firestore {
  match /databases/{database}/documents {
      match /{document=**} {
        allow read: if false;
        allow write: if false;
      }
}

test,js

const assert = require('assert');
const firebase = require("@firebase/testing");

const PROJECT_ID = "asd";
const myId = "user_abc";
const theirId = "user_xyz";
const myAuth = {uid: myId, email: "abc@example.com"};

function getFireStore(myAuth){
    return firebase.initializeTestApp({projectId: PROJECT_ID, auth: myAuth}).firestore();
}

function getFireStoreAdmin(){
    return firebase.initializeAdminApp({projectId: PROJECT_ID}).firestore();
}

beforeEach(async() => {
    await firebase.clearFirestoreData({projectId: PROJECT_ID});
});

describe("asd app", () => {

    it("get doc from firestore", async() => {
        const db = getFireStore(null);
        const testDoc = db.collection("readonly").doc("testDoc");
        await firebase.assertSucceeds(testDoc.get());
    });
})

Steps to reproduce

firebase emulators:start

npm test

Expected behavior

A clear error message what is wrong. Something like FirebaseError: PERMISSION_DENIED because security rules returned false for 'get' @ L5

Actual behavior

Running Security Rule Test fails with following unclear error:

FirebaseError: false for 'get' @ L5 at new FirestoreError (node_modules/@firebase/firestore/dist/index.node.cjs.js:1205:28) at fromRpcStatus (node_modules/@firebase/firestore/dist/index.node.cjs.js:5240:12) at fromWatchChange (node_modules/@firebase/firestore/dist/index.node.cjs.js:5476:35) at PersistentListenStream.onMessage (node_modules/@firebase/firestore/dist/index.node.cjs.js:15743:27) at /home/roman/projects/asd/test/security_rules/node_modules/@firebase/firestore/dist/index.node.cjs.js:15676:30 at /home/roman/projects/asd/test/security_rules/node_modules/@firebase/firestore/dist/index.node.cjs.js:15712:28 at /home/roman/projects/asd/test/security_rules/node_modules/@firebase/firestore/dist/index.node.cjs.js:14143:20 at processTicksAndRejections (internal/process/task_queues.js:93:5)