Tests pass now?

Change-Id: I5b5495b15e1a9928eee12b9c05f3fb655b753802

Author: samtstern

auth/build.gradle

@@ -55,7 +55,7 @@ dependencies {
 
     testImplementation 'junit:junit:4.12'
     //noinspection GradleDynamicVersion
-    testImplementation 'org.mockito:mockito-core:2.15.+'
+    testImplementation 'org.mockito:mockito-core:2.18.3'
     testImplementation 'org.robolectric:robolectric:3.7'
     testImplementation 'com.facebook.android:facebook-login:4.32.0'
     testImplementation("com.twitter.sdk.android:twitter-core:3.1.1@aar") { transitive = true }

auth/src/test/java/com/firebase/ui/auth/testhelpers/TestHelper.java

@@ -127,11 +127,13 @@ private static void injectMockFirebaseAuth(FirebaseApp app) {
                     instances.put(id, mock(FirebaseAuth.class));
                 }
 
+                FirebaseAuth auth = FirebaseAuth.getInstance(app);
                 break;
             }
         }
 
-        when(FirebaseAuth.getInstance(app).setFirebaseUIVersion(anyString()))
+        FirebaseAuth mockAuth = FirebaseAuth.getInstance(app);
+        when(mockAuth.setFirebaseUIVersion(anyString()))
                 .thenReturn(Tasks.<Void>forResult(null));
     }