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.state;
  
  import static org.easymock.EasyMock.expect;
  import static org.easymock.EasyMock.replay;
  import static org.hamcrest.Matchers.hasSize;
  import static org.hamcrest.core.AllOf.allOf;
  import static org.hamcrest.core.Is.is;
  import static org.junit.Assert.assertThat;
  import static org.junit.internal.matchers.IsCollectionContaining.hasItems;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.ambari.server.AmbariException;
  import org.apache.ambari.server.api.services.AmbariMetaInfo;
  import org.easymock.EasyMockRunner;
  import org.easymock.EasyMockSupport;
  import org.easymock.Mock;
  import org.hamcrest.Matcher;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  @RunWith(EasyMockRunner.class)
  public class ServiceComponentSupportTest extends EasyMockSupport {
    private static final String STACK_NAME = "HDP";
    private static final String VERSION = "3.0";
    @Mock
    private AmbariMetaInfo ambariMetaInfo;
    private ServiceComponentSupport componentSupport;
  
    @Before
    public void setUp() throws Exception {
      componentSupport = new ServiceComponentSupport(() -> ambariMetaInfo);
    }
  
    @Test
    public void testNoUnsupportedIfAllExistsInTargetStack() throws Exception {
      targetStackWith("SERVICE1", "SERVICE2");
      Set<String> unsupported = unsupportedServices(clusterWith("SERVICE1", "SERVICE2"));
      assertThat(unsupported, hasSize(0));
      verifyAll();
    }
  
    @Test
    public void testUnsupportedIfDoesntExistInTargetStack() throws Exception {
      targetStackWith("SERVICE1");
      Set<String> unsupported = unsupportedServices(clusterWith("SERVICE1", "SERVICE2"));
      assertThat(unsupported, hasOnlyItems(is("SERVICE2")));
      verifyAll();
    }
  
    @Test
    public void testUnsupportedIfDeletedFromTargetStack() throws Exception {
      targetStackWith("SERVICE1", "SERVICE2");
      markAsDeleted("SERVICE2");
      Set<String> unsupported = unsupportedServices(clusterWith("SERVICE1", "SERVICE2"));
      assertThat(unsupported, hasOnlyItems(is("SERVICE2")));
      verifyAll();
    }
  
    private void targetStackWith(String... serviceNames) throws AmbariException {
      expect(ambariMetaInfo.getServices(STACK_NAME, VERSION)).andReturn(serviceInfoMap(serviceNames)).anyTimes();
      replay(ambariMetaInfo);
    }
  
    private Map<String, ServiceInfo> serviceInfoMap(String... serviceNames) {
      Map<String, ServiceInfo> serviceInfoMap = new HashMap<>();
      for (String serviceName : serviceNames) {
        serviceInfoMap.put(serviceName, new ServiceInfo());
      }
      return serviceInfoMap;
    }
  
    private Set<String> unsupportedServices(Cluster cluster) {
      return componentSupport.unsupportedServices(cluster, STACK_NAME, VERSION);
    }
  
    private Cluster clusterWith(String... installedServiceNames) {
      Cluster cluster = mock(Cluster.class);
      Map<String, Service> serviceMap = new HashMap<>();
      for (String serviceName : installedServiceNames) {
        serviceMap.put(serviceName, null);
      }
      expect(cluster.getServices()).andReturn(serviceMap);
      replay(cluster);
      return cluster;
    }
  
    private void markAsDeleted(String serviceName) throws AmbariException {
      ambariMetaInfo.getServices(STACK_NAME, VERSION).get(serviceName).setDeleted(true);
    }
  
    private static Matcher hasOnlyItems(Matcher... matchers) {
      return allOf(hasSize(matchers.length), hasItems(matchers));
    }
  }