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.cloudstack.poll;
  
  import org.apache.cloudstack.managed.context.ManagedContextRunnable;
  import org.junit.After;
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Test;
  
  public class BackgroundPollManagerImplTest {
  
      private BackgroundPollManagerImpl pollManager;
      private DummyPollTask pollTask;
  
      private class DummyPollTask extends ManagedContextRunnable implements BackgroundPollTask {
          private boolean didIRun = false;
          private long counter = 0;
  
          public boolean didItRan() {
              return didIRun;
          }
  
          public long getCounter() {
              return counter;
          }
  
          @Override
          protected void runInContext() {
              didIRun = true;
              counter++;
          }
  
          @Override
          public Long getDelay() {
              return null;
          }
  
      }
  
      @Before
      public void setUp() throws Exception {
          pollManager = new BackgroundPollManagerImpl();
          pollTask = new DummyPollTask();
      }
  
      @After
      public void tearDown() throws Exception {
          pollManager.stop();
      }
  
      @Test
      public void testSubmitValidTask() throws Exception {
          Assert.assertFalse(pollTask.didItRan());
          Assert.assertTrue(pollTask.getCounter() == 0);
  
          pollManager.submitTask(pollTask);
          pollManager.start();
          Thread.sleep(pollManager.getInitialDelay()*2);
  
          Assert.assertTrue(pollTask.didItRan());
          Assert.assertTrue(pollTask.getCounter() > 0);
      }
  
      @Test(expected = NullPointerException.class)
      public void testSubmitNullTask() throws Exception {
          pollManager.submitTask(null);
      }
  
  }
  