Fix test failures by working around Facebook SDK

Change-Id: If1686bde8906f2e06d87c51fb8399be0b960028d

Author: samtstern

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

@@ -11,9 +11,9 @@ public class CustomCountDownTimerShadow {
     private boolean started;
     private long countDownInterval;
     private long millisInFuture;
-    @Mock
-    public static CountDownTimer countDownTimer;
 
+    @Mock
+    public CountDownTimer countDownTimer;
 
     public CustomCountDownTimerShadow() {
     }

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

@@ -14,6 +14,7 @@
 
 package com.firebase.ui.auth.testhelpers;
 
+import android.app.Activity;
 import android.support.annotation.StyleRes;
 
 import com.facebook.login.LoginResult;
@@ -47,6 +48,10 @@ public FacebookProviderShadow() {
     @SuppressWarnings("checkstyle:methodname")
     public void __constructor__(AuthUI.IdpConfig idpConfig, @StyleRes int theme) {}
 
+    public void startLogin(Activity activity) {
+        onSuccess(null);
+    }
+
     @Implementation
     public void setAuthenticationCallback(IdpCallback idpCallback) {
         mCallback = idpCallback;

auth/src/test/java/com/firebase/ui/auth/ui/idp/AuthMethodPickerActivityTest.java

@@ -19,7 +19,6 @@
 import android.widget.Button;
 import android.widget.LinearLayout;
 
-import com.facebook.FacebookSdk;
 import com.firebase.ui.auth.AuthUI;
 import com.firebase.ui.auth.BuildConfig;
 import com.firebase.ui.auth.R;
@@ -132,7 +131,6 @@ public void testFacebookLoginFlow() {
         List<String> providers = Arrays.asList(AuthUI.FACEBOOK_PROVIDER);
 
         AuthMethodPickerActivity authMethodPickerActivity = createActivity(providers);
-        FacebookSdk.sdkInitialize(authMethodPickerActivity);
 
         Button facebookButton = (Button) authMethodPickerActivity.findViewById(R.id.facebook_button);
         assertNotNull(facebookButton);