Add a test to check if the web-console is correctly integrated

integration-tests/src/test/java/org/apache/druid/tests/TestNGGroup.java

@@ -161,4 +161,6 @@ public class TestNGGroup
   public static final String CUSTOM_COORDINATOR_DUTIES = "custom-coordinator-duties";
 
   public static final String HTTP_ENDPOINT = "http-endpoint";
+
+  public static final String WEB_CONSOLE = "web-console";
 }

integration-tests/src/test/java/org/apache/druid/tests/console/ITWebConsoleTest.java

@@ -0,0 +1,75 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.druid.tests.console;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import com.google.inject.Inject;
+import org.apache.druid.java.util.common.StringUtils;
+import org.apache.druid.java.util.http.client.HttpClient;
+import org.apache.druid.java.util.http.client.Request;
+import org.apache.druid.java.util.http.client.response.StatusResponseHandler;
+import org.apache.druid.java.util.http.client.response.StatusResponseHolder;
+import org.apache.druid.testing.IntegrationTestingConfig;
+import org.apache.druid.testing.guice.DruidTestModuleFactory;
+import org.apache.druid.testing.guice.TestClient;
+import org.apache.druid.testing.utils.ITRetryUtil;
+import org.apache.druid.tests.TestNGGroup;
+import org.jboss.netty.handler.codec.http.HttpMethod;
+import org.jboss.netty.handler.codec.http.HttpResponseStatus;
+import org.testng.annotations.Guice;
+import org.testng.annotations.Test;
+
+import java.net.URL;
+
+@Test(groups = TestNGGroup.WEB_CONSOLE)
+@Guice(moduleFactory = DruidTestModuleFactory.class)
+public class ITWebConsoleTest
+{
+  @Inject
+  @TestClient
+  HttpClient httpClient;
+
+  @Inject
+  IntegrationTestingConfig config;
+
+  @Test
+  public void testWebConsoleHomePageExists()
+  {
+    ITRetryUtil.retryUntil(
+        () -> {
+          ListenableFuture<StatusResponseHolder> status = httpClient.go(
+              new Request(
+                  HttpMethod.GET,
+                  new URL(config.getRouterUrl())
+              ),
+              StatusResponseHandler.getInstance()
+          );
+
+          int httpStatusCode = status.get().getStatus().getCode();
+          return httpStatusCode == HttpResponseStatus.OK.getCode()
+                 || httpStatusCode == HttpResponseStatus.FOUND.getCode();
+        },
+        true,
+        ITRetryUtil.DEFAULT_RETRY_SLEEP,
+        5,
+        StringUtils.format("WebConsole home page at [%s] does not exist.", config.getRouterUrl())
+    );
+  }
+}