Use auth impl object instead of mock auth object (#3098)

Author: sam-gc

packages-exp/auth-exp/src/core/auth/auth_impl.ts

@@ -38,7 +38,7 @@ export const DEFAULT_TOKEN_API_HOST = 'securetoken.googleapis.com';
 export const DEFAULT_API_HOST = 'identitytoolkit.googleapis.com';
 export const DEFAULT_API_SCHEME = 'https';
 
-class AuthImpl implements Auth {
+export class AuthImpl implements Auth {
   currentUser: User | null = null;
   private operations = Promise.resolve();
   private persistenceManager?: PersistenceUserManager;

packages-exp/auth-exp/test/mock_auth.ts

@@ -15,38 +15,30 @@
  * limitations under the License.
  */
 
+import { AuthImpl } from '../src/core/auth/auth_impl';
 import { StsTokenManager } from '../src/core/user/token_manager';
 import { UserImpl } from '../src/core/user/user_impl';
 import { Auth } from '../src/model/auth';
 import { User } from '../src/model/user';
 
 export const TEST_HOST = 'localhost';
 export const TEST_TOKEN_HOST = 'localhost/token';
+export const TEST_AUTH_DOMAIN = 'localhost';
 export const TEST_SCHEME = 'mock';
 export const TEST_KEY = 'test-api-key';
 
-export const mockAuth: Auth = ({
-  name: 'test-app',
-  config: {
+export const mockAuth: Auth = new AuthImpl(
+  'test-app',
+  {
     apiKey: TEST_KEY,
+    authDomain: TEST_AUTH_DOMAIN,
     apiHost: TEST_HOST,
     apiScheme: TEST_SCHEME,
     tokenApiHost: TEST_TOKEN_HOST,
     sdkClientVersion: 'testSDK/0.0.0'
   },
-  _isInitialized: true,
-  currentUser: null,
-  async setPersistence() {},
-  async updateCurrentUser() {},
-  async signOut() {},
-  onAuthStateChanged() {
-    return () => {};
-  },
-  onIdTokenChanged() {
-    return () => {};
-  },
-  _notifyStateListeners() {}
-} as unknown) as Auth;
+  [],
+);
 
 export function testUser(
   uid: string,