/*
    * 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.eclipse.aether.impl;
  
  import java.util.Arrays;
  import java.util.List;
  
  import org.eclipse.aether.RepositorySystem;
  import org.eclipse.aether.spi.locator.Service;
  import org.eclipse.aether.spi.locator.ServiceLocator;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.fail;
  
  /**
   */
  public class DefaultServiceLocatorTest {
  
      @Test
      public void testGetRepositorySystem() {
          DefaultServiceLocator locator = new DefaultServiceLocator();
          locator.addService(ArtifactDescriptorReader.class, StubArtifactDescriptorReader.class);
          locator.addService(VersionResolver.class, StubVersionResolver.class);
          locator.addService(VersionRangeResolver.class, StubVersionRangeResolver.class);
  
          RepositorySystem repoSys = locator.getService(RepositorySystem.class);
          assertNotNull(repoSys);
      }
  
      @Test
      public void testGetServicesUnmodifiable() {
          DefaultServiceLocator locator = new DefaultServiceLocator();
          locator.setServices(String.class, "one", "two");
          List<String> services = locator.getServices(String.class);
          assertNotNull(services);
          try {
              services.set(0, "fail");
              fail("service list is modifable");
          } catch (UnsupportedOperationException e) {
              // expected
          }
      }
  
      @Test
      public void testSetInstancesAddClass() {
          DefaultServiceLocator locator = new DefaultServiceLocator();
          locator.setServices(String.class, "one", "two");
          locator.addService(String.class, String.class);
          assertEquals(Arrays.asList("one", "two", ""), locator.getServices(String.class));
      }
  
      @Test
      public void testInitService() {
          DefaultServiceLocator locator = new DefaultServiceLocator();
          locator.setService(DummyService.class, DummyService.class);
          DummyService service = locator.getService(DummyService.class);
          assertNotNull(service);
          assertNotNull(service.locator);
      }
  
      private static class DummyService implements Service {
  
          ServiceLocator locator;
  
          public void initService(ServiceLocator locator) {
              this.locator = locator;
          }
      }
  }