Android Open Source - AudioBook Track Creator 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./*www .j a va2s .  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.util;

import junit.framework.TestCase;
import android.os.Environment;
import edu.chalmers.dat255.audiobookplayer.model.Track;

/**
 * JUnit test for TrackCreator class.
 * 
 * @author Marcus Parkkinen, Aki K?kel?
 * 
 *         NOTE: in order for the test to pass, a valid path to an audio track
 *         on the device must be specified in VALID_PATH.
 * 
 */
public class TrackCreatorTest extends TestCase {
  /**
   * NOTE:
   * 
   * MUST BE VALID IN ORDER FOR TESTS TO PASS
   * 
   */
  private static final String FILE_NAME = "/audiobooks/huckleberry finn/huck_finn_chap01-text.mp3";
  /**
   * NOTE:
   * 
   * MUST BE VALID IN ORDER FOR TESTS TO PASS
   * 
   */
  private static final String VALID_PATH = Environment
      .getExternalStorageDirectory().getPath() + FILE_NAME;

  private static final String INVALID_PATH = "/invalidPath/myInvalidTrack.mp3";

  /**
   * Tests if creating tracks works as intended.
   */
  public void testCreateTrack() {

    // If trying to create a track with an invalid path, we should
    // receive an exception
    try {
      TrackCreator.createTrack(INVALID_PATH);
      fail("managed to create a track object with an invalid path");
    } catch (IllegalArgumentException e) {
      // everything ok
    }

    // If we however specify a valid path, track creation should work
    Track t = null;
    try {
      t = TrackCreator.createTrack(VALID_PATH);
      assertNotNull(t);
    } catch (IllegalArgumentException e) {
      /*
       * See the class description or FILE_NAME, VALID_PATH. These were
       * not set correctly if this exception is thrown.
       */
      assertNull(t);
    }
  }
}

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