Add tests to Cloud Tasks Quickstart (#1497)

Author: averikitsch

appengine-java8/tasks/pom.xml

@@ -52,14 +52,27 @@ Copyright 2018 Google LLC
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-tasks</artifactId>
-      <version>1.6.0</version>
+      <version>1.3.0</version>
     </dependency>
     <dependency>
       <groupId>commons-cli</groupId>
       <artifactId>commons-cli</artifactId>
       <version>1.4</version>
       <scope>compile</scope>
     </dependency>
+    <!-- Test dependencies -->
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.13-beta-2</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.google.truth</groupId>
+      <artifactId>truth</artifactId>
+      <version>0.44</version>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <build>

appengine-java8/tasks/src/test/java/com/example/task/CreateTaskIT.java

@@ -0,0 +1,65 @@
+/*
+ * 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.example.task;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.Timeout;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Tests for creating Tasks with App Engine targets. */
+@RunWith(JUnit4.class)
+public class CreateTaskIT {
+  private ByteArrayOutputStream bout;
+  private PrintStream out;
+
+  private String projectId = System.getenv("GOOGLE_CLOUD_PROJECT");
+  private String location = System.getenv("LOCATION_ID");
+  private String queueName = System.getenv("QUEUE_ID");
+
+  @Before
+  public void setUp() {
+    bout = new ByteArrayOutputStream();
+    out = new PrintStream(bout);
+    System.setOut(out);
+  }
+
+  @After
+  public void tearDown() {
+    System.setOut(null);
+  }
+
+  @Test
+  public void testCreateTask() throws Exception {
+    CreateTask.main(
+        new String[] {
+          "--project-id", projectId,
+          "--queue", queueName,
+          "--location", location,
+        }
+    );
+    String got = bout.toString();
+    assertThat(got).contains("Task created:");
+  }
+}