/**
  * @deprecated since 0.8.0
  * @return void
  */
 public function testGetAlnum()
 {
     $source = array('a1!b2@c3#');
     $filter = new Zend_Filter_Input($source);
     $this->assertEquals('a1b2c3', $filter->getAlnum(0));
     $this->assertFalse($filter->getAlnum(1));
 }