samoa-threads/src/test/java/org/apache/samoa/topology/impl/ThreadsEntranceProcessingItemTest.java

/*
 * 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.samoa.topology.impl;

import static org.junit.Assert.*;
import mockit.Mocked;
import mockit.StrictExpectations;
import mockit.Tested;
import mockit.Verifications;

import org.apache.samoa.core.ContentEvent;
import org.apache.samoa.core.EntranceProcessor;
import org.apache.samoa.topology.Stream;
import org.apache.samoa.topology.impl.ThreadsEntranceProcessingItem;
import org.junit.Before;
import org.junit.Test;

/**
 * @author Anh Thu Vu
 * 
 */
public class ThreadsEntranceProcessingItemTest {

  @Tested
  private ThreadsEntranceProcessingItem entrancePi;

  @Mocked
  private EntranceProcessor entranceProcessor;
  @Mocked
  private Stream outputStream, anotherStream;
  @Mocked
  private ContentEvent event;

  @Mocked
  private Thread unused;

  /**
   * @throws java.lang.Exception
   */
  @Before
  public void setUp() throws Exception {
    entrancePi = new ThreadsEntranceProcessingItem(entranceProcessor);
  }

  @Test
  public void testContructor() {
    assertSame("EntranceProcessor is not set correctly.", entranceProcessor, entrancePi.getProcessor());
  }

  @Test
  public void testSetOutputStream() {
    entrancePi.setOutputStream(outputStream);
    assertSame("OutoutStream is not set correctly.", outputStream, entrancePi.getOutputStream());
  }

  @Test
  public void testSetOutputStreamRepeate() {
    entrancePi.setOutputStream(outputStream);
    entrancePi.setOutputStream(outputStream);
    assertSame("OutoutStream is not set correctly.", outputStream, entrancePi.getOutputStream());
  }

  @Test(expected = IllegalStateException.class)
  public void testSetOutputStreamError() {
    entrancePi.setOutputStream(outputStream);
    entrancePi.setOutputStream(anotherStream);
  }

  @Test
  public void testStartSendingEvents() {
    entrancePi.setOutputStream(outputStream);
    new StrictExpectations() {
      {
        for (int i = 0; i < 1; i++) {
          entranceProcessor.isFinished();
          result = false;
          entranceProcessor.hasNext();
          result = false;
        }

        for (int i = 0; i < 5; i++) {
          entranceProcessor.isFinished();
          result = false;
          entranceProcessor.hasNext();
          result = true;
          entranceProcessor.nextEvent();
          result = event;
          outputStream.put(event);
        }

        for (int i = 0; i < 2; i++) {
          entranceProcessor.isFinished();
          result = false;
          entranceProcessor.hasNext();
          result = false;
        }

        for (int i = 0; i < 5; i++) {
          entranceProcessor.isFinished();
          result = false;
          entranceProcessor.hasNext();
          result = true;
          entranceProcessor.nextEvent();
          result = event;
          outputStream.put(event);
        }

        entranceProcessor.isFinished();
        result = true;
        times = 1;
        entranceProcessor.hasNext();
        times = 0;

      }
    };
    entrancePi.startSendingEvents();
    new Verifications() {
      {
        try {
          Thread.sleep(anyInt);
          times = 3;
        } catch (InterruptedException e) {

        }
      }
    };
  }

  @Test(expected = IllegalStateException.class)
  public void testStartSendingEventsError() {
    entrancePi.startSendingEvents();
  }

}