public String[] getSupportedExtensions() {
    return new String[] { "kjb", "xml" };
  }
@Test
  public void testGetSupportedExtensions() throws Exception {
    String[] extensions = jobFileListener.getSupportedExtensions();
    assertNotNull( extensions );
    assertEquals( 2, extensions.length );
    assertEquals( "kjb", extensions[0] );
    assertEquals( "xml", extensions[1] );
  }