samoa-threads/src/test/java/org/apache/samoa/topology/impl/ThreadsComponentFactoryTest.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.NonStrictExpectations;
import mockit.Tested;

import org.apache.samoa.core.EntranceProcessor;
import org.apache.samoa.core.Processor;
import org.apache.samoa.topology.EntranceProcessingItem;
import org.apache.samoa.topology.ProcessingItem;
import org.apache.samoa.topology.Stream;
import org.apache.samoa.topology.Topology;
import org.apache.samoa.topology.impl.ThreadsComponentFactory;
import org.apache.samoa.topology.impl.ThreadsEntranceProcessingItem;
import org.apache.samoa.topology.impl.ThreadsProcessingItem;
import org.apache.samoa.topology.impl.ThreadsStream;
import org.apache.samoa.topology.impl.ThreadsTopology;
import org.junit.Before;
import org.junit.Test;

/**
 * @author Anh Thu Vu
 * 
 */
public class ThreadsComponentFactoryTest {
  @Tested
  private ThreadsComponentFactory factory;
  @Mocked
  private Processor processor, processorReplica;
  @Mocked
  private EntranceProcessor entranceProcessor;

  private final int parallelism = 3;
  private final String topoName = "TestTopology";

  @Before
  public void setUp() throws Exception {
    factory = new ThreadsComponentFactory();
  }

  @Test
  public void testCreatePiNoParallelism() {
    new NonStrictExpectations() {
      {
        processor.newProcessor(processor);
        result = processorReplica;
      }
    };
    ProcessingItem pi = factory.createPi(processor);
    assertNotNull("ProcessingItem created is null.", pi);
    assertEquals("ProcessingItem created is not a ThreadsProcessingItem.", ThreadsProcessingItem.class, pi.getClass());
    assertEquals("Parallelism of PI is not 1", 1, pi.getParallelism(), 0);
  }

  @Test
  public void testCreatePiWithParallelism() {
    new NonStrictExpectations() {
      {
        processor.newProcessor(processor);
        result = processorReplica;
      }
    };
    ProcessingItem pi = factory.createPi(processor, parallelism);
    assertNotNull("ProcessingItem created is null.", pi);
    assertEquals("ProcessingItem created is not a ThreadsProcessingItem.", ThreadsProcessingItem.class, pi.getClass());
    assertEquals("Parallelism of PI is not ", parallelism, pi.getParallelism(), 0);
  }

  @Test
  public void testCreateStream() {
    new NonStrictExpectations() {
      {
        processor.newProcessor(processor);
        result = processorReplica;
      }
    };
    ProcessingItem pi = factory.createPi(processor);

    Stream stream = factory.createStream(pi);
    assertNotNull("Stream created is null", stream);
    assertEquals("Stream created is not a ThreadsStream.", ThreadsStream.class, stream.getClass());
  }

  @Test
  public void testCreateTopology() {
    Topology topology = factory.createTopology(topoName);
    assertNotNull("Topology created is null.", topology);
    assertEquals("Topology created is not a ThreadsTopology.", ThreadsTopology.class, topology.getClass());
  }

  @Test
  public void testCreateEntrancePi() {
    EntranceProcessingItem entrancePi = factory.createEntrancePi(entranceProcessor);
    assertNotNull("EntranceProcessingItem created is null.", entrancePi);
    assertEquals("EntranceProcessingItem created is not a ThreadsEntranceProcessingItem.",
        ThreadsEntranceProcessingItem.class, entrancePi.getClass());
    assertSame("EntranceProcessor is not set correctly.", entranceProcessor, entrancePi.getProcessor());
  }

}