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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.atlas.plugin.classloader;
  
  import org.testng.annotations.Test;
  
  import static org.testng.Assert.fail;
  
  public class AtlasPluginClassLoaderTest {
      @Test
      public void testClassLoader() throws Exception {
          String cls = "org.apache.atlas.service.Services";
  
          try {
              loadClass(cls, null);
  
              fail("Expected ClassNotFoundException");
          } catch (ClassNotFoundException e) {
              //expected
          }
  
          AtlasPluginClassLoader classLoader = new AtlasPluginClassLoader(new String[] {"../common/target"}, this.getClass());
  
          classLoader.activate();
  
          //org.apache.atlas.service.Services class should be loadable now
          //should also load org.apache.atlas.service.Service
          Class<?> servicesCls = loadClass(cls, null);
  
          loadClass("org.apache.atlas.service.Service", servicesCls.getClassLoader());
  
          //Fall back to current class loader should also work
          loadClass(AtlasPluginClassLoaderUtil.class.getName(), null);
  
          classLoader.deactivate();
  
          //After disable, class loading should fail again
          try {
              loadClass(cls, null);
  
              fail("Expected ClassNotFoundException");
          } catch (ClassNotFoundException e) {
              //expected
          }
      }
  
      private Class<?> loadClass(String cls, ClassLoader classLoader) throws ClassNotFoundException {
          if (classLoader == null) {
              classLoader = Thread.currentThread().getContextClassLoader();
          }
  
          return Class.forName(cls, true, classLoader);
      }
  }
  