content: /*
   * 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.ambari.server.api.query.render;
  
  
  import static org.easymock.EasyMock.createNiceMock;
  import static org.easymock.EasyMock.expect;
  import static org.easymock.EasyMock.replay;
  import static org.easymock.EasyMock.verify;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNull;
  import static org.junit.Assert.assertTrue;
  
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.ambari.server.api.query.QueryInfo;
  import org.apache.ambari.server.api.resources.ClusterResourceDefinition;
  import org.apache.ambari.server.api.resources.ComponentResourceDefinition;
  import org.apache.ambari.server.api.resources.HostResourceDefinition;
  import org.apache.ambari.server.api.resources.ServiceResourceDefinition;
  import org.apache.ambari.server.api.services.Result;
  import org.apache.ambari.server.api.services.ResultImpl;
  import org.apache.ambari.server.api.util.TreeNode;
  import org.apache.ambari.server.api.util.TreeNodeImpl;
  import org.apache.ambari.server.controller.internal.HostComponentResourceProvider;
  import org.apache.ambari.server.controller.internal.HostResourceProvider;
  import org.apache.ambari.server.controller.internal.ResourceImpl;
  import org.apache.ambari.server.controller.spi.Resource;
  import org.apache.ambari.server.controller.spi.Schema;
  import org.apache.ambari.server.controller.spi.SchemaFactory;
  import org.apache.ambari.server.controller.utilities.PropertyHelper;
  import org.junit.Test;
  
  /**
   * MinimalRenderer unit tests.
   */
  public class MinimalRendererTest {
    @Test
    public void testFinalizeProperties__instance_noProperties() {
      SchemaFactory schemaFactory = createNiceMock(SchemaFactory.class);
      Schema schema = createNiceMock(Schema.class);
  
      // schema expectations
      expect(schemaFactory.getSchema(Resource.Type.Component)).andReturn(schema).anyTimes();
      expect(schemaFactory.getSchema(Resource.Type.Alert)).andReturn(schema).anyTimes();
      expect(schemaFactory.getSchema(Resource.Type.Artifact)).andReturn(schema).anyTimes();
      expect(schema.getKeyPropertyId(Resource.Type.Component)).andReturn("ServiceComponentInfo/component_name").anyTimes();
  
      replay(schemaFactory, schema);
  
      QueryInfo rootQuery = new QueryInfo(new ServiceResourceDefinition(), new HashSet<>());
      TreeNode<QueryInfo> queryTree = new TreeNodeImpl<>(null, rootQuery, "Service");
  
      MinimalRenderer renderer = new MinimalRenderer();
      renderer.init(schemaFactory);
      TreeNode<Set<String>> propertyTree = renderer.finalizeProperties(queryTree, false);
      // no properties should have been added
      assertTrue(propertyTree.getObject().isEmpty());
      assertEquals(3, propertyTree.getChildren().size());
  
      TreeNode<Set<String>> componentNode = propertyTree.getChild("Component");
      assertEquals(1, componentNode.getObject().size());
      assertTrue(componentNode.getObject().contains("ServiceComponentInfo/component_name"));
  
      verify(schemaFactory, schema);
    }
  
    @Test
    public void testFinalizeProperties__instance_properties() {
      SchemaFactory schemaFactory = createNiceMock(SchemaFactory.class);
      Schema schema = createNiceMock(Schema.class);
  
      // schema expectations
      expect(schemaFactory.getSchema(Resource.Type.Service)).andReturn(schema).anyTimes();
      expect(schema.getKeyPropertyId(Resource.Type.Service)).andReturn("ServiceInfo/service_name").anyTimes();
  
      replay(schemaFactory, schema);
  
      HashSet<String> serviceProperties = new HashSet<>();
      serviceProperties.add("foo/bar");
      QueryInfo rootQuery = new QueryInfo(new ServiceResourceDefinition(), serviceProperties);
      TreeNode<QueryInfo> queryTree = new TreeNodeImpl<>(null, rootQuery, "Service");
  
      MinimalRenderer renderer = new MinimalRenderer();
      renderer.init(schemaFactory);
      TreeNode<Set<String>> propertyTree = renderer.finalizeProperties(queryTree, false);
  
      assertEquals(2, propertyTree.getObject().size());
      assertTrue(propertyTree.getObject().contains("ServiceInfo/service_name"));
      assertTrue(propertyTree.getObject().contains("foo/bar"));
  
      assertEquals(0, propertyTree.getChildren().size());
  
      verify(schemaFactory, schema);
    }
  
    @Test
    public void testFinalizeProperties__collection_noProperties() {
      SchemaFactory schemaFactory = createNiceMock(SchemaFactory.class);
      Schema schema = createNiceMock(Schema.class);
  
      // schema expectations
      expect(schemaFactory.getSchema(Resource.Type.Service)).andReturn(schema).anyTimes();
      expect(schema.getKeyPropertyId(Resource.Type.Service)).andReturn("ServiceInfo/service_name").anyTimes();
  
      replay(schemaFactory, schema);
  
      HashSet<String> serviceProperties = new HashSet<>();
      QueryInfo rootQuery = new QueryInfo(new ServiceResourceDefinition(), serviceProperties);
      TreeNode<QueryInfo> queryTree = new TreeNodeImpl<>(null, rootQuery, "Service");
  
      MinimalRenderer renderer = new MinimalRenderer();
      renderer.init(schemaFactory);
      TreeNode<Set<String>> propertyTree = renderer.finalizeProperties(queryTree, true);
  
      assertEquals(1, propertyTree.getObject().size());
      assertTrue(propertyTree.getObject().contains("ServiceInfo/service_name"));
  
      assertEquals(0, propertyTree.getChildren().size());
  
      verify(schemaFactory, schema);
    }
  
    @Test
    public void testFinalizeProperties__collection_properties() {
      SchemaFactory schemaFactory = createNiceMock(SchemaFactory.class);
      Schema schema = createNiceMock(Schema.class);
  
      // schema expectations
      expect(schemaFactory.getSchema(Resource.Type.Service)).andReturn(schema).anyTimes();
      expect(schema.getKeyPropertyId(Resource.Type.Service)).andReturn("ServiceInfo/service_name").anyTimes();
  
      replay(schemaFactory, schema);
  
      HashSet<String> serviceProperties = new HashSet<>();
      serviceProperties.add("foo/bar");
      QueryInfo rootQuery = new QueryInfo(new ServiceResourceDefinition(), serviceProperties);
      TreeNode<QueryInfo> queryTree = new TreeNodeImpl<>(null, rootQuery, "Service");
  
      MinimalRenderer renderer = new MinimalRenderer();
      renderer.init(schemaFactory);
      TreeNode<Set<String>> propertyTree = renderer.finalizeProperties(queryTree, true);
  
      assertEquals(2, propertyTree.getObject().size());
      assertTrue(propertyTree.getObject().contains("ServiceInfo/service_name"));
      assertTrue(propertyTree.getObject().contains("foo/bar"));
  
      assertEquals(0, propertyTree.getChildren().size());
  
      verify(schemaFactory, schema);
    }
  
    @Test
    public void testFinalizeProperties__instance_subResource_noProperties() {
      SchemaFactory schemaFactory = createNiceMock(SchemaFactory.class);
      Schema serviceSchema = createNiceMock(Schema.class);
      Schema componentSchema = createNiceMock(Schema.class);
  
      // schema expectations
      expect(schemaFactory.getSchema(Resource.Type.Service)).andReturn(serviceSchema).anyTimes();
      expect(serviceSchema.getKeyPropertyId(Resource.Type.Service)).andReturn("ServiceInfo/service_name").anyTimes();
      expect(schemaFactory.getSchema(Resource.Type.Component)).andReturn(componentSchema).anyTimes();
      expect(componentSchema.getKeyPropertyId(Resource.Type.Component)).andReturn("ServiceComponentInfo/component_name").anyTimes();
  
      replay(schemaFactory, serviceSchema, componentSchema);
  
      HashSet<String> serviceProperties = new HashSet<>();
      QueryInfo rootQuery = new QueryInfo(new ServiceResourceDefinition(), serviceProperties);
      TreeNode<QueryInfo> queryTree = new TreeNodeImpl<>(null, rootQuery, "Service");
      queryTree.addChild(new QueryInfo(new ComponentResourceDefinition(), new HashSet<>()), "Component");
  
      MinimalRenderer renderer = new MinimalRenderer();
      renderer.init(schemaFactory);
      TreeNode<Set<String>> propertyTree = renderer.finalizeProperties(queryTree, false);
  
      assertEquals(1, propertyTree.getChildren().size());
      assertEquals(1, propertyTree.getObject().size());
      assertTrue(propertyTree.getObject().contains("ServiceInfo/service_name"));
  
  
      TreeNode<Set<String>> componentNode = propertyTree.getChild("Component");
      assertEquals(0, componentNode.getChildren().size());
      assertEquals(1, componentNode.getObject().size());
      assertTrue(componentNode.getObject().contains("ServiceComponentInfo/component_name"));
  
  
      verify(schemaFactory, serviceSchema, componentSchema);
    }
  
    @Test
    public void testFinalizeProperties__instance_subResource_properties() {
      SchemaFactory schemaFactory = createNiceMock(SchemaFactory.class);
      Schema serviceSchema = createNiceMock(Schema.class);
      Schema componentSchema = createNiceMock(Schema.class);
  
      // schema expectations
      expect(schemaFactory.getSchema(Resource.Type.Service)).andReturn(serviceSchema).anyTimes();
      expect(serviceSchema.getKeyPropertyId(Resource.Type.Service)).andReturn("ServiceInfo/service_name").anyTimes();
      expect(schemaFactory.getSchema(Resource.Type.Component)).andReturn(componentSchema).anyTimes();
      expect(componentSchema.getKeyPropertyId(Resource.Type.Component)).andReturn("ServiceComponentInfo/component_name").anyTimes();
  
      replay(schemaFactory, serviceSchema, componentSchema);
  
      HashSet<String> serviceProperties = new HashSet<>();
      serviceProperties.add("foo/bar");
      QueryInfo rootQuery = new QueryInfo(new ServiceResourceDefinition(), serviceProperties);
      TreeNode<QueryInfo> queryTree = new TreeNodeImpl<>(null, rootQuery, "Service");
      HashSet<String> componentProperties = new HashSet<>();
      componentProperties.add("goo/car");
      queryTree.addChild(new QueryInfo(new ComponentResourceDefinition(), componentProperties), "Component");
  
      MinimalRenderer renderer = new MinimalRenderer();
      renderer.init(schemaFactory);
      TreeNode<Set<String>> propertyTree = renderer.finalizeProperties(queryTree, false);
  
      assertEquals(1, propertyTree.getChildren().size());
      assertEquals(2, propertyTree.getObject().size());
      assertTrue(propertyTree.getObject().contains("ServiceInfo/service_name"));
      assertTrue(propertyTree.getObject().contains("foo/bar"));
  
      TreeNode<Set<String>> componentNode = propertyTree.getChild("Component");
      assertEquals(0, componentNode.getChildren().size());
      assertEquals(2, componentNode.getObject().size());
      assertTrue(componentNode.getObject().contains("ServiceComponentInfo/component_name"));
      assertTrue(componentNode.getObject().contains("goo/car"));
  
      verify(schemaFactory, serviceSchema, componentSchema);
    }
  
    @Test
    public void testFinalizeProperties__collection_subResource_noProperties() {
      SchemaFactory schemaFactory = createNiceMock(SchemaFactory.class);
      Schema serviceSchema = createNiceMock(Schema.class);
      Schema componentSchema = createNiceMock(Schema.class);
  
      // schema expectations
      expect(schemaFactory.getSchema(Resource.Type.Service)).andReturn(serviceSchema).anyTimes();
      expect(serviceSchema.getKeyPropertyId(Resource.Type.Service)).andReturn("ServiceInfo/service_name").anyTimes();
      expect(schemaFactory.getSchema(Resource.Type.Component)).andReturn(componentSchema).anyTimes();
      expect(componentSchema.getKeyPropertyId(Resource.Type.Component)).andReturn("ServiceComponentInfo/component_name").anyTimes();
  
      replay(schemaFactory, serviceSchema, componentSchema);
  
      HashSet<String> serviceProperties = new HashSet<>();
      QueryInfo rootQuery = new QueryInfo(new ServiceResourceDefinition(), serviceProperties);
      TreeNode<QueryInfo> queryTree = new TreeNodeImpl<>(null, rootQuery, "Service");
      queryTree.addChild(new QueryInfo(new ComponentResourceDefinition(), new HashSet<>()), "Component");
  
      MinimalRenderer renderer = new MinimalRenderer();
      renderer.init(schemaFactory);
      TreeNode<Set<String>> propertyTree = renderer.finalizeProperties(queryTree, true);
  
      assertEquals(1, propertyTree.getChildren().size());
      assertEquals(1, propertyTree.getObject().size());
      assertTrue(propertyTree.getObject().contains("ServiceInfo/service_name"));
  
  
      TreeNode<Set<String>> componentNode = propertyTree.getChild("Component");
      assertEquals(0, componentNode.getChildren().size());
      assertEquals(1, componentNode.getObject().size());
      assertTrue(componentNode.getObject().contains("ServiceComponentInfo/component_name"));
  
      verify(schemaFactory, serviceSchema, componentSchema);
    }
  
    @Test
    public void testFinalizeProperties__collection_subResource_propertiesTopLevelOnly() {
      SchemaFactory schemaFactory = createNiceMock(SchemaFactory.class);
      Schema serviceSchema = createNiceMock(Schema.class);
      Schema componentSchema = createNiceMock(Schema.class);
  
      // schema expectations
      expect(schemaFactory.getSchema(Resource.Type.Service)).andReturn(serviceSchema).anyTimes();
      expect(serviceSchema.getKeyPropertyId(Resource.Type.Service)).andReturn("ServiceInfo/service_name").anyTimes();
      expect(schemaFactory.getSchema(Resource.Type.Component)).andReturn(componentSchema).anyTimes();
      expect(componentSchema.getKeyPropertyId(Resource.Type.Component)).andReturn("ServiceComponentInfo/component_name").anyTimes();
  
      replay(schemaFactory, serviceSchema, componentSchema);
  
      HashSet<String> serviceProperties = new HashSet<>();
      serviceProperties.add("foo/bar");
      QueryInfo rootQuery = new QueryInfo(new ServiceResourceDefinition(), serviceProperties);
      TreeNode<QueryInfo> queryTree = new TreeNodeImpl<>(null, rootQuery, "Service");
      queryTree.addChild(new QueryInfo(new ComponentResourceDefinition(), new HashSet<>()), "Component");
  
      MinimalRenderer renderer = new MinimalRenderer();
      renderer.init(schemaFactory);
      TreeNode<Set<String>> propertyTree = renderer.finalizeProperties(queryTree, true);
  
      assertEquals(1, propertyTree.getChildren().size());
      assertEquals(2, propertyTree.getObject().size());
      assertTrue(propertyTree.getObject().contains("ServiceInfo/service_name"));
      assertTrue(propertyTree.getObject().contains("foo/bar"));
  
  
      TreeNode<Set<String>> componentNode = propertyTree.getChild("Component");
      assertEquals(0, componentNode.getChildren().size());
      assertEquals(1, componentNode.getObject().size());
      assertTrue(componentNode.getObject().contains("ServiceComponentInfo/component_name"));
  
      verify(schemaFactory, serviceSchema, componentSchema);
    }
  
    @Test
    public void testFinalizeResult() throws Exception {
      SchemaFactory schemaFactory = createNiceMock(SchemaFactory.class);
      Schema clusterSchema = createNiceMock(Schema.class);
      Schema hostSchema = createNiceMock(Schema.class);
      Schema hostComponentSchema = createNiceMock(Schema.class);
  
      // mock expectations
      expect(schemaFactory.getSchema(Resource.Type.Cluster)).andReturn(clusterSchema).anyTimes();
      expect(schemaFactory.getSchema(Resource.Type.Host)).andReturn(hostSchema).anyTimes();
      expect(schemaFactory.getSchema(Resource.Type.HostComponent)).andReturn(hostComponentSchema).anyTimes();
  
      expect(clusterSchema.getKeyPropertyId(Resource.Type.Cluster)).andReturn("Clusters/cluster_name").anyTimes();
  
      expect(hostSchema.getKeyPropertyId(Resource.Type.Cluster)).andReturn("Hosts/cluster_name").anyTimes();
      expect(hostSchema.getKeyPropertyId(Resource.Type.Host)).andReturn("Hosts/host_name").anyTimes();
  
      expect(hostComponentSchema.getKeyPropertyId(Resource.Type.Cluster)).andReturn("HostRoles/cluster_name").anyTimes();
      expect(hostComponentSchema.getKeyPropertyId(Resource.Type.Host)).andReturn("HostRoles/host_name").anyTimes();
      expect(hostComponentSchema.getKeyPropertyId(Resource.Type.HostComponent)).andReturn("HostRoles/component_name").anyTimes();
  
      replay(schemaFactory, clusterSchema, hostSchema, hostComponentSchema);
  
      Result result = new ResultImpl(true);
      createResultTree(result.getResultTree());
  
      MinimalRenderer renderer = new MinimalRenderer();
      renderer.init(schemaFactory);
      //call finalizeProperties so that renderer know which properties are requested by user
      renderer.finalizeProperties(createPropertyTree(), false);
  
      TreeNode<Resource> resultTree = renderer.finalizeResult(result).getResultTree();
      assertNull(resultTree.getStringProperty("isCollection"));
      assertEquals(1, resultTree.getChildren().size());
  
      TreeNode<Resource> clusterNode = resultTree.getChildren().iterator().next();
      Resource clusterResource = clusterNode.getObject();
      Map<String, Map<String, Object>> clusterProperties = clusterResource.getPropertiesMap();
      assertEquals(2, clusterProperties.size());
  
      assertEquals(3, clusterProperties.get("Clusters").size());
      assertEquals("testCluster", clusterProperties.get("Clusters").get("cluster_name"));
      assertEquals("HDP-1.3.3", clusterProperties.get("Clusters").get("version"));
      assertEquals("value1", clusterProperties.get("Clusters").get("prop1"));
  
      assertEquals(1, clusterProperties.get("").size());
      assertEquals("bar", clusterProperties.get("").get("foo"));
  
      TreeNode<Resource> hosts = clusterNode.getChildren().iterator().next();
      for (TreeNode<Resource> hostNode : hosts.getChildren()){
        Resource hostResource = hostNode.getObject();
        Map<String, Map<String, Object>> hostProperties = hostResource.getPropertiesMap();
        assertEquals(1, hostProperties.size());
        assertEquals(1, hostProperties.get("Hosts").size());
        assertTrue(hostProperties.get("Hosts").containsKey("host_name"));
  
        for (TreeNode<Resource> componentNode : hostNode.getChildren().iterator().next().getChildren()) {
          Resource componentResource = componentNode.getObject();
          Map<String, Map<String, Object>> componentProperties = componentResource.getPropertiesMap();
          assertEquals(1, componentProperties.size());
          assertEquals(1, componentProperties.get("HostRoles").size());
          assertTrue(componentProperties.get("HostRoles").containsKey("component_name"));
        }
      }
    }
  
    @Test
    public void testFinalizeResult_propsSetOnSubResource() throws Exception {
      SchemaFactory schemaFactory = createNiceMock(SchemaFactory.class);
      Schema clusterSchema = createNiceMock(Schema.class);
      Schema hostSchema = createNiceMock(Schema.class);
      Schema hostComponentSchema = createNiceMock(Schema.class);
  
      // mock expectations
      expect(schemaFactory.getSchema(Resource.Type.Cluster)).andReturn(clusterSchema).anyTimes();
      expect(schemaFactory.getSchema(Resource.Type.Host)).andReturn(hostSchema).anyTimes();
      expect(schemaFactory.getSchema(Resource.Type.HostComponent)).andReturn(hostComponentSchema).anyTimes();
  
      expect(clusterSchema.getKeyPropertyId(Resource.Type.Cluster)).andReturn("Clusters/cluster_name").anyTimes();
  
      expect(hostSchema.getKeyPropertyId(Resource.Type.Cluster)).andReturn("Hosts/cluster_name").anyTimes();
      expect(hostSchema.getKeyPropertyId(Resource.Type.Host)).andReturn("Hosts/host_name").anyTimes();
  
      expect(hostComponentSchema.getKeyPropertyId(Resource.Type.Cluster)).andReturn("HostRoles/cluster_name").anyTimes();
      expect(hostComponentSchema.getKeyPropertyId(Resource.Type.Host)).andReturn("HostRoles/host_name").anyTimes();
      expect(hostComponentSchema.getKeyPropertyId(Resource.Type.HostComponent)).andReturn("HostRoles/component_name").anyTimes();
  
      replay(schemaFactory, clusterSchema, hostSchema, hostComponentSchema);
  
      Result result = new ResultImpl(true);
      createResultTree(result.getResultTree());
  
      MinimalRenderer renderer = new MinimalRenderer();
      renderer.init(schemaFactory);
      //call finalizeProperties so that renderer know which properties are requested by user
      renderer.finalizeProperties(createPropertyTreeWithSubProps(), false);
  
      TreeNode<Resource> resultTree = renderer.finalizeResult(result).getResultTree();
      assertNull(resultTree.getStringProperty("isCollection"));
      assertEquals(1, resultTree.getChildren().size());
  
      TreeNode<Resource> clusterNode = resultTree.getChildren().iterator().next();
      Resource clusterResource = clusterNode.getObject();
      Map<String, Map<String, Object>> clusterProperties = clusterResource.getPropertiesMap();
      assertEquals(2, clusterProperties.size());
  
      assertEquals(3, clusterProperties.get("Clusters").size());
      assertEquals("testCluster", clusterProperties.get("Clusters").get("cluster_name"));
      assertEquals("HDP-1.3.3", clusterProperties.get("Clusters").get("version"));
      assertEquals("value1", clusterProperties.get("Clusters").get("prop1"));
  
      assertEquals(1, clusterProperties.get("").size());
      assertEquals("bar", clusterProperties.get("").get("foo"));
  
      TreeNode<Resource> hosts = clusterNode.getChildren().iterator().next();
      for (TreeNode<Resource> hostNode : hosts.getChildren()){
        Resource hostResource = hostNode.getObject();
        Map<String, Map<String, Object>> hostProperties = hostResource.getPropertiesMap();
        assertEquals(2, hostProperties.size());
        assertEquals(1, hostProperties.get("Hosts").size());
        assertTrue(hostProperties.get("Hosts").containsKey("host_name"));
        assertEquals(1, hostProperties.get("").size());
        assertEquals("bar", hostProperties.get("").get("foo"));
  
        for (TreeNode<Resource> componentNode : hostNode.getChildren().iterator().next().getChildren()) {
          Resource componentResource = componentNode.getObject();
          Map<String, Map<String, Object>> componentProperties = componentResource.getPropertiesMap();
          assertEquals(1, componentProperties.size());
          assertEquals(1, componentProperties.get("HostRoles").size());
          assertTrue(componentProperties.get("HostRoles").containsKey("component_name"));
        }
      }
    }
  
    //todo: test post processing to ensure href removal
    //todo: Need to do some refactoring to do this.
    //todo: BaseResourceDefinition.BaseHrefPostProcessor calls static ClusterControllerHelper.getClusterController().
  
  
    private TreeNode<QueryInfo> createPropertyTree() {
      TreeNode<QueryInfo> propertyTree = new TreeNodeImpl<>(null, new QueryInfo(
        new ClusterResourceDefinition(), new HashSet<>()), "Cluster");
      Set<String> clusterProperties = propertyTree.getObject().getProperties();
      clusterProperties.add("Clusters/cluster_name");
      clusterProperties.add("Clusters/version");
      clusterProperties.add("Clusters/prop1");
      clusterProperties.add("foo");
  
      return propertyTree;
    }
  
    private TreeNode<QueryInfo> createPropertyTreeWithSubProps() {
      TreeNode<QueryInfo> propertyTree = new TreeNodeImpl<>(null, new QueryInfo(
        new ClusterResourceDefinition(), new HashSet<>()), "Cluster");
      Set<String> clusterProperties = propertyTree.getObject().getProperties();
      clusterProperties.add("Clusters/cluster_name");
      clusterProperties.add("Clusters/version");
      clusterProperties.add("Clusters/prop1");
      clusterProperties.add("foo");
  
      propertyTree.addChild(new QueryInfo(new HostResourceDefinition(), new HashSet<>()), "Host");
      propertyTree.getChild("Host").getObject().getProperties().add("foo");
  
      return propertyTree;
    }
  
    private void createResultTree(TreeNode<Resource> resultTree) throws Exception{
      Resource clusterResource = new ResourceImpl(Resource.Type.Cluster);
      clusterResource.setProperty("Clusters/cluster_name", "testCluster");
      clusterResource.setProperty("Clusters/version", "HDP-1.3.3");
      clusterResource.setProperty("Clusters/prop1", "value1");
      clusterResource.setProperty("foo", "bar");
  
      TreeNode<Resource> clusterTree = resultTree.addChild(clusterResource, "Cluster:1");
  
      TreeNode<Resource> hostsTree = clusterTree.addChild(null, "hosts");
      hostsTree.setProperty("isCollection", "true");
  
      // host 1 : ambari host
      Resource hostResource = new ResourceImpl(Resource.Type.Host);
  
      PropertyHelper.setKeyPropertyIds(Resource.Type.Host,HostResourceProvider.keyPropertyIds);
      PropertyHelper.setKeyPropertyIds(Resource.Type.HostComponent, HostComponentResourceProvider.keyPropertyIds);
      hostResource.setProperty("Hosts/host_name", "testHost");
      hostResource.setProperty("Hosts/cluster_name", "testCluster");
      hostResource.setProperty("foo", "bar");
      TreeNode<Resource> hostTree = hostsTree.addChild(hostResource, "Host:1");
  
      TreeNode<Resource> hostComponentsTree = hostTree.addChild(null, "host_components");
      hostComponentsTree.setProperty("isCollection", "true");
  
      // host 1 components
      Resource nnComponentResource = new ResourceImpl(Resource.Type.HostComponent);
      nnComponentResource.setProperty("HostRoles/component_name", "NAMENODE");
      nnComponentResource.setProperty("HostRoles/host_name", "testHost");
      nnComponentResource.setProperty("HostRoles/cluster_name", "testCluster");
  
      Resource dnComponentResource = new ResourceImpl(Resource.Type.HostComponent);
      dnComponentResource.setProperty("HostRoles/component_name", "DATANODE");
      dnComponentResource.setProperty("HostRoles/host_name", "testHost");
      dnComponentResource.setProperty("HostRoles/cluster_name", "testCluster");
  
      Resource jtComponentResource = new ResourceImpl(Resource.Type.HostComponent);
      jtComponentResource.setProperty("HostRoles/component_name", "JOBTRACKER");
      jtComponentResource.setProperty("HostRoles/host_name", "testHost");
      jtComponentResource.setProperty("HostRoles/cluster_name", "testCluster");
  
      Resource ttComponentResource = new ResourceImpl(Resource.Type.HostComponent);
      ttComponentResource.setProperty("HostRoles/component_name", "TASKTRACKER");
      jtComponentResource.setProperty("HostRoles/host_name", "testHost");
      jtComponentResource.setProperty("HostRoles/cluster_name", "testCluster");
  
      hostComponentsTree.addChild(nnComponentResource, "HostComponent:1");
      hostComponentsTree.addChild(dnComponentResource, "HostComponent:2");
      hostComponentsTree.addChild(jtComponentResource, "HostComponent:3");
      hostComponentsTree.addChild(ttComponentResource, "HostComponent:4");
  
      // host 2
      Resource host2Resource = new ResourceImpl(Resource.Type.Host);
      host2Resource.setProperty("Hosts/host_name", "testHost2");
      host2Resource.setProperty("Hosts/cluster_name", "testCluster");
      host2Resource.setProperty("foo", "bar");
      TreeNode<Resource> host2Tree = hostsTree.addChild(host2Resource, "Host:2");
  
      TreeNode<Resource> host2ComponentsTree = host2Tree.addChild(null, "host_components");
      host2ComponentsTree.setProperty("isCollection", "true");
  
      // host 2 components
      host2ComponentsTree.addChild(dnComponentResource, "HostComponent:1");
      host2ComponentsTree.addChild(ttComponentResource, "HostComponent:2");
  
      // host 3 : same topology as host 2
      Resource host3Resource = new ResourceImpl(Resource.Type.Host);
      host3Resource.setProperty("Hosts/host_name", "testHost3");
      host3Resource.setProperty("Hosts/host_name", "testHost2");
      host3Resource.setProperty("foo", "bar");
      TreeNode<Resource> host3Tree = hostsTree.addChild(host3Resource, "Host:3");
  
      TreeNode<Resource> host3ComponentsTree = host3Tree.addChild(null, "host_components");
      host3ComponentsTree.setProperty("isCollection", "true");
  
      // host 3 components
      host3ComponentsTree.addChild(dnComponentResource, "HostComponent:1");
      host3ComponentsTree.addChild(ttComponentResource, "HostComponent:2");
    }
  }
  