public function testObjectStateGroupListVisitsChildren()
{
$visitor = $this->getVisitor();
$generator = $this->getGenerator();
$generator->startDocument(null);
$groupList = new ObjectStateGroupList(array(new ObjectStateGroup(), new ObjectStateGroup()));
$this->getVisitorMock()->expects($this->exactly(2))->method('visitValueObject')->with($this->isInstanceOf('eZ\\Publish\\API\\Repository\\Values\\ObjectState\\ObjectStateGroup'));
$visitor->visit($this->getVisitorMock(), $generator, $groupList);
}