Cleanup usage of http.enabled (#19351)

Several tests required http.enabled where it was unnecessary.
We also had RestMainActionIT which tests what two of our REST tests
test already so I removed it.
The explicit use of http.enabled: false is also obsolet since our
test do that by default.

core/src/test/java/org/elasticsearch/bwcompat/RecoveryWithUnsupportedIndicesIT.java

@@ -18,9 +18,7 @@
  */
 package org.elasticsearch.bwcompat;
 
-import org.elasticsearch.common.network.NetworkModule;
 import org.elasticsearch.common.settings.Settings;
-import org.elasticsearch.node.Node;
 
 import static org.hamcrest.Matchers.containsString;
 
@@ -29,7 +27,7 @@ public class RecoveryWithUnsupportedIndicesIT extends StaticIndexBackwardCompati
         String indexName = "unsupported-0.20.6";
 
         logger.info("Checking static index {}", indexName);
-        Settings nodeSettings = prepareBackwardsDataDir(getBwcIndicesPath().resolve(indexName + ".zip"), NetworkModule.HTTP_ENABLED.getKey(), true);
+        Settings nodeSettings = prepareBackwardsDataDir(getBwcIndicesPath().resolve(indexName + ".zip"));
         try {
             internalCluster().startNode(nodeSettings);
             fail();

core/src/test/java/org/elasticsearch/client/transport/TransportClientIT.java

@@ -51,16 +51,14 @@ public class TransportClientIT extends ESIntegTestCase {
 
     public void testNodeVersionIsUpdated() throws IOException {
         TransportClient client = (TransportClient)  internalCluster().client();
-        Node node = new Node(Settings.builder()
+        try (Node node = new Node(Settings.builder()
                 .put(internalCluster().getDefaultSettings())
                 .put(Environment.PATH_HOME_SETTING.getKey(), createTempDir())
                 .put("node.name", "testNodeVersionIsUpdated")
                 .put("http.enabled", false)
                 .put(Node.NODE_DATA_SETTING.getKey(), false)
                 .put("cluster.name", "foobar")
-                .build());
-        node.start();
-        try {
+                .build()).start()) {
             TransportAddress transportAddress = node.injector().getInstance(TransportService.class).boundAddress().publishAddress();
             client.addTransportAddress(transportAddress);
             // since we force transport clients there has to be one node started that we connect to.
@@ -79,8 +77,6 @@ public class TransportClientIT extends ESIntegTestCase {
             for (DiscoveryNode discoveryNode : client.filteredNodes()) {
                 assertThat(discoveryNode.getVersion(), equalTo(Version.CURRENT.minimumCompatibilityVersion()));
             }
-        } finally {
-            node.close();
         }
     }
 

core/src/test/java/org/elasticsearch/discovery/DiscoveryWithServiceDisruptionsIT.java

@@ -175,7 +175,6 @@ public class DiscoveryWithServiceDisruptionsIT extends ESIntegTestCase {
             .put(FaultDetection.PING_RETRIES_SETTING.getKey(), "1") // for hitting simulated network failures quickly
             .put("discovery.zen.join_timeout", "10s")  // still long to induce failures but to long so test won't time out
             .put(DiscoverySettings.PUBLISH_TIMEOUT_SETTING.getKey(), "1s") // <-- for hitting simulated network failures quickly
-            .put("http.enabled", false) // just to make test quicker
             .build();
 
     @Override

core/src/test/java/org/elasticsearch/gateway/GatewayServiceTests.java

@@ -35,10 +35,7 @@ public class GatewayServiceTests extends ESTestCase {
         ClusterService clusterService = new ClusterService(Settings.builder().put("cluster.name", "GatewayServiceTests").build(),
                 new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS),
                 null);
-        return new GatewayService(Settings.builder()
-                .put("http.enabled", "false")
-                .put("discovery.type", "local")
-                .put(settings.build()).build(),
+        return new GatewayService(settings.build(),
                 null, clusterService, null, null, null, new NoopDiscovery(), null, null);
     }
 

core/src/test/java/org/elasticsearch/index/WaitUntilRefreshIT.java

@@ -58,10 +58,6 @@ import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertSear
  * Tests that requests with RefreshPolicy.WAIT_UNTIL will be visible when they return.
  */
 public class WaitUntilRefreshIT extends ESIntegTestCase {
-    @Override
-    protected Settings nodeSettings(int nodeOrdinal) {
-        return Settings.builder().put(super.nodeSettings(nodeOrdinal)).put(NetworkModule.HTTP_ENABLED.getKey(), true).build();
-    }
 
     @Override
     public Settings indexSettings() {

core/src/test/java/org/elasticsearch/rest/action/main/RestMainActionIT.java

@@ -1,56 +0,0 @@
-/*
- * Licensed to Elasticsearch under one or more contributor
- * license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright
- * ownership. Elasticsearch 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.elasticsearch.rest.action.main;
-
-import org.apache.http.util.EntityUtils;
-import org.elasticsearch.client.Response;
-import org.elasticsearch.common.network.NetworkModule;
-import org.elasticsearch.common.settings.Settings;
-import org.elasticsearch.test.ESIntegTestCase;
-
-import java.io.IOException;
-import java.util.Collections;
-
-import static org.hamcrest.Matchers.containsString;
-import static org.hamcrest.Matchers.equalTo;
-
-public class RestMainActionIT extends ESIntegTestCase {
-    @Override
-    protected Settings nodeSettings(int nodeOrdinal) {
-        return Settings.builder()
-            .put(super.nodeSettings(nodeOrdinal))
-            .put(NetworkModule.HTTP_ENABLED.getKey(), true)
-            .build();
-    }
-
-    public void testHeadRequest() throws IOException {
-        try (Response response = getRestClient().performRequest("HEAD", "/", Collections.emptyMap(), null)) {
-            assertThat(response.getStatusLine().getStatusCode(), equalTo(200));
-            assertNull(response.getEntity());
-        }
-    }
-
-    public void testGetRequest() throws IOException {
-        try (Response response = getRestClient().performRequest("GET", "/", Collections.emptyMap(), null)) {
-            assertThat(response.getStatusLine().getStatusCode(), equalTo(200));
-            assertNotNull(response.getEntity());
-            assertThat(EntityUtils.toString(response.getEntity()), containsString("cluster_name"));
-        }
-    }
-}