def assertIdentity(self, query):
input_query = parseString(query)
result_query = CqlIdentityVisitor(input_query).visit()
self.assertEqual(input_query, result_query)
input_ids = set(id(n) for n in allnodes(input_query))
result_ids = set(id(n) for n in allnodes(result_query))
self.assertEqual(0, len(input_ids.intersection(result_ids)),
'Expected new ast to be a deepcopy.')
def doVisit():
for i in range(10):
CqlIdentityVisitor(p).visit()
