/**
* Create a group containing two fields, "visibleField" and "hiddenField"
*
* @return FieldGroup
*/
protected function getGroupWithBothVisibleAndHiddenField()
{
$group = new TestFieldGroup('testGroup');
// add a visible field
$visibleField = $this->createMockField('visibleField');
$visibleField->expects($this->once())->method('isHidden')->will($this->returnValue(false));
$group->add($visibleField);
// add a hidden field
$hiddenField = $this->createMockField('hiddenField');
$hiddenField->expects($this->once())->method('isHidden')->will($this->returnValue(true));
$group->add($hiddenField);
return $group;
}