Authentication Emulator returns `undefined` Multi-Factor Info for Users

[wokkaflokka]

When running the node admin SDK locally with an Authentication Emulator, user operations allow multifactor data on write, but do not reflect multifactor data on read.

[REQUIRED] Environment info

firebase-tools:

% ./node_modules/.bin/firebase --version
9.5.0

Platform:

% node -v
v12.16.3
% npm -v
6.14.4
% ./node_modules/.bin/tsc -v 
Version 4.1.3

% uname -mrsv
Darwin 20.2.0 Darwin Kernel Version 20.2.0: Wed Dec  2 20:39:59 PST 2020; root:xnu-7195.60.75~1/RELEASE_X86_64 x86_64

[REQUIRED] Test case

Assumes a typescript project with firebase-admin and jest installed, and firebase-tools installed as a dev dependency.

import firebaseAdmin from 'firebase-admin';

let app: firebaseAdmin.app.App;

beforeAll(() => {
    app = firebaseAdmin.initializeApp({
        projectId: 'run-me-in-an-emulator',
    });
});

afterAll(async () => {
    await app.delete();
});

test.only('Firebase Authentication Emulator Returns MultiFactorSettings Data', async () => {
    const user = await app.auth().createUser({
        email: `test@test.com`,
        emailVerified: true,
        password: undefined,
        multiFactor: {
            enrolledFactors: [
                {
                    phoneNumber: '+12813308004',
                    factorId: 'phone',
                    displayName: 'Mobile',
                } as firebaseAdmin.auth.CreatePhoneMultiFactorInfoRequest,
            ],
        },
    });

    expect(user.multiFactor).toBeTruthy();
});

[REQUIRED] Steps to reproduce

Run the following test with the node.js admin SDK using a local firebase authentication emulator, something like:

./node_modules/.bin/firebase emulators:exec 'npm run test firebaseRepro.test.ts'

The test does the following:

1. Create a user with multi-factor info using the node admin sdk.

[REQUIRED] Expected behavior

UserRecord object is returned with a non-null multiFactor MultiFactorSettings object.

[REQUIRED] Actual behavior

UserRecord object is returned with an undefined multiFactor MultiFactorSettings object.

 % ./node_modules/.bin/firebase emulators:exec 'npm run test firebaseRepro.test.ts'
i  emulators: Starting emulators: auth, pubsub
i  pubsub: Pub/Sub Emulator logging to pubsub-debug.log
i  Running script: npm run test firebaseRepro.test.ts

> jest "firebaseRepro.test.ts"

 FAIL  src/firebaseRepro.test.ts (5.781 s)
  ✕ Firebase Authentication Emulator Returns MultiFactorSettings Data (74 ms)

  ● Firebase Authentication Emulator Returns MultiFactorSettings Data

    expect(received).toBeTruthy()

    Received: undefined

      29 |     });                                                                                                                                                                                                                                                                               
      30 |
    > 31 |     expect(user.multiFactor).toBeTruthy();                                                                                                                                                                                                                                            
         |                              ^
      32 | });                                                                                                                                                                                                                                                                                   
      33 |

      at src/firebaseRepro.test.ts:31:30
      at fulfilled (src/firebaseRepro.test.ts:5:58)

Test Suites: 1 failed, 1 total
Tests:       1 failed, 1 total
Snapshots:   0 total
Time:        5.818 s, estimated 7 s
Ran all test suites matching /firebaseRepro.test.ts/i.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! test: `jest "firebaseRepro.test.ts"`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the test script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/wokkaflokka/.npm/_logs/2021-02-24T00_05_17_664Z-debug.log
⚠  Script exited unsuccessfully (code 1)
i  emulators: Shutting down emulators.
i  pubsub: Stopping Pub/Sub Emulator
i  auth: Stopping Authentication Emulator
i  hub: Stopping emulator hub

Error: Script "npm run test firebaseRepro.test.ts" exited with code 1

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