'Test child node lookup'

def testChildren(self):

    uids = self.uids
    links = self.links
    assertEqual = self.assertEqual
    h = S3Hierarchy('test_lhierarchy')
    for uid in uids:
        assertEqual(h.children(uids[uid]), set((link.child_id for link in links.values() if (link.parent_id == uids[uid]))))
