Os-Login: Added ITSystem Test (#6538)

* Added integration test

* Fix method name

* Modified code

* Fix review changes

google-cloud-os-login/src/test/java/com/google/cloud/oslogin/v1/it/ITSystemTest.java

@@ -0,0 +1,105 @@
+/*
+ * Copyright 2019 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
+ *
+ *       http://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.
+ */
+
+package com.google.cloud.oslogin.v1.it;
+
+import static org.junit.Assert.assertEquals;
+
+import com.google.api.gax.rpc.NotFoundException;
+import com.google.auth.oauth2.GoogleCredentials;
+import com.google.cloud.ServiceOptions;
+import com.google.cloud.oslogin.common.OsLoginProto;
+import com.google.cloud.oslogin.v1.FingerprintName;
+import com.google.cloud.oslogin.v1.ImportSshPublicKeyResponse;
+import com.google.cloud.oslogin.v1.LoginProfile;
+import com.google.cloud.oslogin.v1.OsLoginServiceClient;
+import com.google.cloud.oslogin.v1.UserName;
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class ITSystemTest {
+  private OsLoginServiceClient osLoginServiceClient;
+  private UserName parent;
+  private static String user;
+  private static String clientId;
+
+  private static final String PROJECT = ServiceOptions.getDefaultProjectId();
+  private static final String GOOGLE_API_CLIENT_ID = "clientId";
+  private static final String GOOGLE_API_CLIENT_EMAIL_ID = "clientEmail";
+  private static final String GOOGLE_API_CLOUD_PLATFORM_LINK =
+      "https://www.googleapis.com/auth/cloud-platform";
+  private static final String NON_EXISTENT_FINGERPRINT_NAME = "test-fingerprint";
+  private static final String REGEXP = "^\"|\"$";
+  private static final OsLoginProto.SshPublicKey SSH_PUBLIC_KEY =
+      OsLoginProto.SshPublicKey.newBuilder().build();
+  private static final Gson GSON = new Gson();
+
+  @BeforeClass
+  public static void setup() throws Exception {
+    user = getFromCredential(GOOGLE_API_CLIENT_EMAIL_ID);
+    clientId = getFromCredential(GOOGLE_API_CLIENT_ID);
+  }
+
+  @Before
+  public void before() throws Exception {
+    osLoginServiceClient = OsLoginServiceClient.create();
+    parent = UserName.of(user);
+  }
+
+  @After
+  public void after() {
+    osLoginServiceClient.close();
+  }
+
+  private static String getFromCredential(String key) throws Exception {
+    GoogleCredentials credentials =
+        GoogleCredentials.getApplicationDefault().createScoped(GOOGLE_API_CLOUD_PLATFORM_LINK);
+    JsonObject jsonObject = GSON.fromJson(GSON.toJson(credentials), JsonObject.class);
+    return jsonObject.get(key).toString().replaceAll(REGEXP, "");
+  }
+
+  @Test
+  public void getLoginProfileTest() {
+    LoginProfile profile = osLoginServiceClient.getLoginProfile(parent);
+    assertEquals(clientId, profile.getName());
+  }
+
+  @Test(expected = NotFoundException.class)
+  public void getSshPublicKeyExceptionTest() {
+    FingerprintName name = FingerprintName.of(user, NON_EXISTENT_FINGERPRINT_NAME);
+    OsLoginProto.SshPublicKey sshPublicKey = osLoginServiceClient.getSshPublicKey(name);
+  }
+
+  @Test
+  public void importSshPublicKeyTest() {
+    ImportSshPublicKeyResponse publicKeyResponse =
+        osLoginServiceClient.importSshPublicKey(parent, SSH_PUBLIC_KEY);
+    assertEquals(clientId, publicKeyResponse.getLoginProfile().getName());
+    assertEquals(1, publicKeyResponse.getLoginProfile().getPosixAccountsCount());
+  }
+
+  @Test
+  public void importSshPublicKeyWithProjectTest() {
+    ImportSshPublicKeyResponse keyResponse =
+        osLoginServiceClient.importSshPublicKey(parent, SSH_PUBLIC_KEY, PROJECT);
+    assertEquals(clientId, keyResponse.getLoginProfile().getName());
+    assertEquals(1, keyResponse.getLoginProfile().getPosixAccountsCount());
+  }
+}