googleworkspace · sqrrrl · Feb 23, 2022 · Jan 14, 2022 · Jan 14, 2022 · Jan 14, 2022
diff --git a/gmail/snippets/src/main/java/EnableForwarding.java b/gmail/snippets/src/main/java/EnableForwarding.java
@@ -37,10 +37,15 @@ public class EnableForwarding {
      * @throws IOException if service account credentials file not found.
      */
     public static AutoForwarding enableAutoForwarding(String forwardingEmail) throws IOException{
-        // Load pre-authorized user credentials from the environment.
-        // TODO(developer) - See https://developers.google.com/identity for
-        // guides on implementing OAuth2 for your application.
-        GoogleCredentials credentials = GoogleCredentials.getApplicationDefault().createScoped(Collections.singletonList(GmailScopes.GMAIL_SETTINGS_SHARING));
+        // TODO(developer) - Replace with your email address.
+        String USER_EMAIL_ADDRESS = "gduser1@workspacesamples.dev";
+
+        /* Load pre-authorized user credentials from the environment.
+           TODO(developer) - See https://developers.google.com/identity for
+            guides on implementing OAuth2 for your application. */
+        GoogleCredentials credentials = GoogleCredentials.getApplicationDefault()
+                .createScoped(Collections.singletonList(GmailScopes.GMAIL_SETTINGS_SHARING))
+                .createDelegated(USER_EMAIL_ADDRESS);
         HttpRequestInitializer requestInitializer = new HttpCredentialsAdapter(
                 credentials);
 
@@ -74,4 +79,4 @@ public static AutoForwarding enableAutoForwarding(String forwardingEmail) throws
         return null;
     }
 }
-// [END gmail_enable_forwarding]
+// [END gmail_enable_forwarding]
diff --git a/gmail/snippets/src/test/java/TestEnableForwarding.java b/gmail/snippets/src/test/java/TestEnableForwarding.java
@@ -0,0 +1,31 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+import com.google.api.services.gmail.model.AutoForwarding;
+import org.junit.Test;
+import java.io.IOException;
+import static org.junit.Assert.assertNotNull;
+
+public class TestEnableForwarding extends BaseTest {
+
+    @Test
+    public void TestEnableAutoForwarding() throws IOException {
+        AutoForwarding forwarding = EnableForwarding.enableAutoForwarding(FORWARDING_ADDRESS);
+        assertNotNull(forwarding);
+        forwarding = new AutoForwarding().setEnabled(false);
+        this.service.users().settings().updateAutoForwarding("me", forwarding).execute();
+        this.service.users().settings().forwardingAddresses().delete("me", FORWARDING_ADDRESS).execute();
+    }
+}