public function raises_exception_when_given_null()
{
Enumeration::of(null);
}
/**
* Creates a new stream with an enumeration of elements
*
* @see xp://util.data.Enumeration
* @param var $elements an iterator, iterable, generator or array
* @return self
* @throws lang.IllegalArgumentException if type of elements argument is incorrect
*/
public static function of($elements)
{
if (null === $elements) {
return self::$EMPTY;
} else {
return new self(Enumeration::of($elements));
}
}
