rq/tests/test_serializers.py

41 lines
1.4 KiB
Python

import json
import pickle
import pickletools
import queue
import unittest
from rq.serializers import DefaultSerializer, resolve_serializer
class TestSerializers(unittest.TestCase):
def test_resolve_serializer(self):
"""Ensure function resolve_serializer works correctly"""
serializer = resolve_serializer(None)
self.assertIsNotNone(serializer)
self.assertEqual(serializer, DefaultSerializer)
# Test round trip with default serializer
test_data = {'test': 'data'}
serialized_data = serializer.dumps(test_data)
self.assertEqual(serializer.loads(serialized_data), test_data)
self.assertEqual(next(pickletools.genops(serialized_data))[1], pickle.HIGHEST_PROTOCOL)
# Test using json serializer
serializer = resolve_serializer(json)
self.assertIsNotNone(serializer)
self.assertTrue(hasattr(serializer, 'dumps'))
self.assertTrue(hasattr(serializer, 'loads'))
# Test raise NotImplmentedError
with self.assertRaises(NotImplementedError):
resolve_serializer(object)
# Test raise Exception
with self.assertRaises(Exception):
resolve_serializer(queue.Queue())
# Test using path.to.serializer string
serializer = resolve_serializer('tests.fixtures.Serializer')
self.assertIsNotNone(serializer)