fix(auth): correctly emit anonymous auth state

A new boolean property has been added to FirebaseAuthState, `anonymous`.
This will be set to true when the authenticated user is authenticated
via anonymous authentication.

Part of angular#229

Author: jeffbcross

src/providers/auth.spec.ts

@@ -63,6 +63,12 @@ const firebaseUser = <firebase.User> {
   }]
 };
 
+const anonymouseFirebaseUser = <firebase.User> {
+  uid: '12345',
+  isAnonymous: true,
+  providerData: []
+}
+
 const githubCredential = {
   credential: {
     accessToken: 'ACCESS_TOKEN',
@@ -114,7 +120,7 @@ describe('FirebaseAuth', () => {
     authSpy['signInWithPopup'].and.returnValue(Promise.resolve(googleCredential));
     authSpy['signInWithRedirect'].and.returnValue(Promise.resolve(AngularFireAuthState));
     authSpy['signInWithCredential'].and.returnValue(Promise.resolve(firebaseUser));
-    authSpy['signInAnonymously'].and.returnValue(Promise.resolve(firebaseUser));
+    authSpy['signInAnonymously'].and.returnValue(Promise.resolve(anonymouseFirebaseUser));
     authSpy['signInWithCustomToken'].and.returnValue(Promise.resolve(firebaseUser));
     authSpy['signInWithEmailAndPassword'].and.returnValue(Promise.resolve(firebaseUser));
     authSpy['onAuthStateChanged']
@@ -333,7 +339,7 @@ describe('FirebaseAuth', () => {
       it('will resolve the promise upon authentication', (done: any) => {
         afAuth.login(options)
           .then(result => {
-            expect(result.auth).toEqual(AngularFireAuthState.auth);
+            expect(result.auth).toEqual(anonymouseFirebaseUser);
           })
           .then(done, done.fail);
 

src/providers/auth_backend.spec.ts

@@ -22,6 +22,12 @@ const baseFBUser = {
   providerData: [{}]
 };
 
+const anonymouseFirebaseUser = <firebase.User> {
+  uid: 'fCjhqFLSmLRI1YOfFwy7MDmjBpC9',
+  isAnonymous: true,
+  providerData: []
+};
+
 const baseAuthState: FirebaseAuthState = {
   uid: baseFBUser.uid,
   provider: AuthProviders.Anonymous,
@@ -103,4 +109,19 @@ describe('auth_backend', () => {
     let actualAuthState = authDataToAuthState(facebookUser, baseFacebookCredential);
     expect(actualAuthState.facebook.accessToken).toEqual(baseFacebookCredential.accessToken);
   });
+
+
+  it('Anonymous: should return a FirebaseAuthState object', () => {
+    let anonymouseFirebaseUser = Object.assign({}, baseFBUser, {
+      providerData: [],
+      isAnonymous: true
+    });
+    let expectedAuthState = Object.assign({}, baseAuthState, {
+      facebook: baseFacebookCredential,
+      auth: anonymouseFirebaseUser
+    });
+
+    let actualAuthState = authDataToAuthState(anonymouseFirebaseUser);
+    expect(actualAuthState.anonymous).toEqual(true);
+  });
 });

src/providers/auth_backend.ts

@@ -50,6 +50,7 @@ export interface FirebaseAuthState {
   google?: GoogleCredential;
   twitter?: TwitterCredential;
   facebook?: CommonOAuthCredential;
+  anonymous?: boolean;
 }
 
 export interface CommonOAuthCredential {
@@ -69,8 +70,18 @@ export interface TwitterCredential extends CommonOAuthCredential {
 export type OAuthCredential = CommonOAuthCredential | GoogleCredential | TwitterCredential;
 
 export function authDataToAuthState(authData: firebase.User, providerData?: OAuthCredential): FirebaseAuthState {
-  let { uid, providerData: [{providerId}] } = authData;
+  let providerId;
+  let { uid } = authData;
   let authState: FirebaseAuthState = { auth: authData, uid, provider: null };
+  if (authData.isAnonymous) {
+    providerId = 'anonymous';
+    authState.provider = AuthProviders.Anonymous;
+    authState.anonymous = true;
+    return authState;
+  } else {
+    providerId = authData.providerData[0].providerId;
+  }
+
   switch (providerId) {
     case 'github.com':
       authState.github = <CommonOAuthCredential>providerData;
@@ -91,9 +102,6 @@ export function authDataToAuthState(authData: firebase.User, providerData?: OAut
     case 'password':
       authState.provider = AuthProviders.Password;
       break;
-    case 'anonymous':
-      authState.provider = AuthProviders.Anonymous;
-      break;
     case 'custom':
       authState.provider = AuthProviders.Custom;
       break;

test/e2e/auth/firebase_auth_example.ts

@@ -25,7 +25,7 @@ import { COMMON_CONFIG } from '../../../src/test-config';
       <p>
         Is Anonymous?
         <span id="is-anonymous">
-          {{ user?.isAnonymous }}
+          {{ user?.anonymous }}
         </span>
       </p>
     </blockquote>