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import sys
import unittest
from warnings import warn
import jsonpickle
from jsonpickle.compat import unicode
from jsonpickle.compat import PY2
from jsonpickle.compat import PY3
from jsonpickle.compat import PY32
class Thing(object):
def __init__(self, name):
self.name = name
self.child = None
SAMPLE_DATA = {'things': [Thing('data')]}
class BackendTestCase(unittest.TestCase):
def _is_installed(self, backend):
if not jsonpickle.util.is_installed(backend):
if hasattr(self, 'skipTest'):
doit = self.skipTest
else:
doit = self.fail
doit('%s not available; please install' % backend)
def set_backend(self, *args):
backend = args[0]
self._is_installed(backend)
jsonpickle.load_backend(*args)
jsonpickle.set_preferred_backend(backend)
def set_preferred_backend(self, backend):
self._is_installed(backend)
jsonpickle.set_preferred_backend(backend)
def tearDown(self):
# always reset to default backend
jsonpickle.set_preferred_backend('json')
def assertEncodeDecode(self, json_input):
expect = SAMPLE_DATA
actual = jsonpickle.decode(json_input)
self.assertEqual(expect['things'][0].name, actual['things'][0].name)
self.assertEqual(expect['things'][0].child, actual['things'][0].child)
pickled = jsonpickle.encode(SAMPLE_DATA)
actual = jsonpickle.decode(pickled)
self.assertEqual(expect['things'][0].name, actual['things'][0].name)
self.assertEqual(expect['things'][0].child, actual['things'][0].child)
class JsonTestCase(BackendTestCase):
def setUp(self):
self.set_preferred_backend('json')
def test_backend(self):
expected_pickled = (
'{"things": [{'
'"py/object": "backends_tests.Thing",'
' "name": "data",'
' "child": null}'
']}')
self.assertEncodeDecode(expected_pickled)
class SimpleJsonTestCase(BackendTestCase):
def setUp(self):
if PY32:
return
self.set_preferred_backend('simplejson')
def test_backend(self):
if PY32:
self.skipTest('no simplejson for python3.2')
return
expected_pickled = (
'{"things": [{'
'"py/object": "backends_tests.Thing",'
' "name": "data",'
' "child": null}'
']}')
self.assertEncodeDecode(expected_pickled)
def has_module(module):
try:
__import__(module)
except ImportError:
warn(module + ' module not available for testing, '
'consider installing')
return False
return True
class DemjsonTestCase(BackendTestCase):
def setUp(self):
if PY2:
self.set_preferred_backend('demjson')
def test_backend(self):
if PY3:
self.skipTest('no demjson for python3')
return
expected_pickled = unicode(
'{"things":[{'
'"child":null,'
'"name":"data",'
'"py/object":"backends_tests.Thing"}'
']}')
self.assertEncodeDecode(expected_pickled)
class JsonlibTestCase(BackendTestCase):
def setUp(self):
if PY2:
self.set_preferred_backend('jsonlib')
def test_backend(self):
if PY3:
self.skipTest('no jsonlib for python3')
return
expected_pickled = (
'{"things":[{'
'"py\/object":"backends_tests.Thing",'
'"name":"data","child":null}'
']}')
self.assertEncodeDecode(expected_pickled)
class YajlTestCase(BackendTestCase):
def setUp(self):
if PY2:
self.set_preferred_backend('yajl')
def test_backend(self):
if PY3:
self.skipTest('no yajl for python3')
return
expected_pickled = (
'{"things":[{'
'"py/object":"backends_tests.Thing",'
'"name":"data","child":null}'
']}')
self.assertEncodeDecode(expected_pickled)
class UJsonTestCase(BackendTestCase):
def setUp(self):
self.set_preferred_backend('ujson')
def test_backend(self):
expected_pickled = (
'{"things":[{'
'"py\/object":"backends_tests.Thing",'
'"name":"data","child":null}'
']}')
self.assertEncodeDecode(expected_pickled)
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(JsonTestCase))
#suite.addTest(unittest.makeSuite(UJsonTestCase))
if not PY32:
suite.addTest(unittest.makeSuite(SimpleJsonTestCase))
if PY2:
if has_module('demjson'):
suite.addTest(unittest.makeSuite(DemjsonTestCase))
if has_module('yajl'):
suite.addTest(unittest.makeSuite(YajlTestCase))
if has_module('jsonlib'):
suite.addTest(unittest.makeSuite(JsonlibTestCase))
return suite
if __name__ == '__main__':
unittest.main(defaultTest='suite')
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