content: /**
   * Licensed 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.aurora.common.testing;
  
  import java.util.LinkedList;
  import java.util.List;
  
  import com.google.common.collect.Lists;
  
  import org.junit.After;
  
  /**
   * A base class for unit tests to easily add teardown actions.
   */
  public class TearDownTestCase {
    private final LinkedList<TearDown> actions = new LinkedList<>();
  
    public final void addTearDown(TearDown tearDown) {
      actions.addFirst(tearDown);
    }
  
    @After
    public final void tearDown() {
      List<Exception> exceptions = Lists.newArrayList();
      for (TearDown action : actions) {
        try {
          action.tearDown();
        } catch (Exception e) {
          exceptions.add(e);
        }
      }
      if(!exceptions.isEmpty()) {
        throw new RuntimeException("Tear down did not complete cleanly: " + exceptions);
      } else {
        actions.clear();
      }
    }
  
    public interface TearDown {
      void tearDown() throws Exception;
    }
  }
  