package com.yahoo.labs.samoa.topology.impl;

/*
 * #%L
 * SAMOA
 * %%
 * Copyright (C) 2014 - 2015 Apache Software Foundation
 * %%
 * 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.
 * #L%
 */

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

import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;

import com.yahoo.labs.samoa.core.ContentEvent;
import com.yahoo.labs.samoa.core.EntranceProcessor;
import com.yahoo.labs.samoa.topology.Stream;

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

  @Tested
  private SimpleEntranceProcessingItem 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 SimpleEntranceProcessingItem(entranceProcessor);
  }

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

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

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

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

  @Test
  public void testInjectNextEventSuccess() {
    entrancePi.setOutputStream(outputStream);
    new StrictExpectations() {
      {
        entranceProcessor.hasNext();
        result = true;

        entranceProcessor.nextEvent();
        result = event;
      }
    };
    entrancePi.injectNextEvent();
    new Verifications() {
      {
        outputStream.put(event);
      }
    };
  }

  @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();
  }

}