Android Open Source - AudioBook Track Test

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Java Source Code

/**
 *  This work is licensed under the Creative Commons Attribution-NonCommercial-
 *  NoDerivs 3.0 Unported License. To view a copy of this license, visit
 *  http://creativecommons.org/licenses/by-nc-nd/3.0/ or send a letter to 
 *  Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 
 *  94041, USA.//from  w  w w. j a va 2  s  .c  om
 * 
 *  Use of this work is permitted only in accordance with license rights granted.
 *  Materials provided "AS IS"; no representations or warranties provided.
 * 
 *  Copyright ? 2012 Marcus Parkkinen, Aki K?kel?, Fredrik ?hs.
 **/

package edu.chalmers.dat255.audiobookplayer.model;

import junit.framework.TestCase;

/**
 * Tests constructing and copying a track, getting the track path, and getting
 * and setting the elapsed time of the selected track.
 * 
 * @author Marcus Parkkinen, Aki K?kel?
 * @version 0.2
 */

public class TrackTest extends TestCase {
  // The test object.
  private Track t;

  // Some values for creating tracks.
  private static final String TRACK_PATH = "/audiobooks/huckleberry finn/huck_finn_chap01-text.mp3";
  private static final int TRACK_DURATION = 1238921;
  private static final int ELAPSED_TIME = 238238;

  /*
   * (non-Javadoc)
   * 
   * @see junit.framework.TestCase#setUp()
   */
  @Override
  protected void setUp() {
    try {
      super.setUp();
    } catch (Exception e) {
      // catch exceptions from super.setUp() and fail
      fail("setUp failed + " + e.getMessage());
    }
    t = new Track(TRACK_PATH, TRACK_DURATION);
    t.setSelectedTrackElapsedTime(ELAPSED_TIME);
  }

  /**
   * Tests the constructor.
   */
  public void testConstructor() {
    // try creating a track with 'null' as path
    try {
      t = new Track(null, TRACK_DURATION);
      fail("Constructor did not throw exception for null path.");
    } catch (IllegalArgumentException e) {

    }

    // try creating a track with illegal path string
    try {
      t = new Track("", TRACK_DURATION);
      fail("Constructor did not throw exception for empty string as path");
    } catch (IllegalArgumentException e) {

    }

    // try creating a track with 0 as duration
    try {
      t = new Track(TRACK_PATH, 0);
      fail("Constructor did not throw exception for zero duration.");
    } catch (IllegalArgumentException e) {

    }

    // try creating a track with -1 as duration
    try {
      t = new Track(TRACK_PATH, -1);
      fail("Constructor did not throw exception for negative duration.");
    } catch (IllegalArgumentException e) {

    }
  }

  /**
   * Tests the copy constructor.
   */
  public void testCopy() {
    // create a new copy of the track
    Track newTrack = new Track(t);

    // assert that we have two separate objects
    assertNotSame(newTrack, t);

    // but assert that they are equal
    assertTrue(newTrack.equals(t));
  }

  /**
   * Tests getting the track path.
   */
  public void testGetTrackPath() {
    assertTrue(TRACK_PATH.equals(t.getTrackPath()));
  }

  /**
   * Tests getting the elapsed time.
   */
  public void testGetElapsedTime() {
    assertEquals(ELAPSED_TIME, t.getElapsedTime());
  }

  /**
   * Tests setting the elapsed time of the selected track.
   */
  public void testSetSelectedTrackElapsedTime() {
    // test legal bound values
    t.setSelectedTrackElapsedTime(TRACK_DURATION);
    t.setSelectedTrackElapsedTime(0);

    // try setting a negative value for the track
    try {
      t.setSelectedTrackElapsedTime(-1);
      fail("managed to set time to negative value.");
    } catch (IllegalArgumentException e) {

    }

    // try setting a time > duration
    t.setSelectedTrackElapsedTime(TRACK_DURATION + 1);
    assertEquals(TRACK_DURATION, t.getElapsedTime());
  }

}

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