Method test

/**
 * Method to test the value.
 *
 * @param   \SimpleXMLElement  $element  The SimpleXMLElement object representing the `<field>` tag for the form field object.
 * @param   mixed              $value    The form field value to validate.
 * @param   string             $group    The field name group control value. This acts as an array container for the field.
 *                                       For example if the field has name="foo" and the group value is set to "bar" then the
 *                                       full field name would end up being "bar[foo]".
 * @param   Registry           $input    An optional Registry object with the entire data set to validate against the entire form.
 * @param   Form               $form     The form object for which the field is being tested.
 *
 * @return  boolean  True if the value is valid, false otherwise.
 *
 * @since   1.7.0
 */
public function test(\SimpleXMLElement $element, $value, $group = null, Registry $input = null, Form $form = null)
{
    // Get the possible field actions and the ones posted to validate them.
    $fieldActions = self::getFieldActions($element);
    $valueActions = self::getValueActions($value);
    // Make sure that all posted actions are in the list of possible actions for the field.
    foreach ($valueActions as $action) {
        if (!\in_array($action, $fieldActions)) {
            return false;
        }
    }
    return true;
}