def test_converted_value(self):
field = JSONField(required=False)
tests = [
'["a", "b", "c"]',
'{"a": 1, "b": 2}',
'1',
'1.5',
'"foo"',
'true',
'false',
'null',
]
for json_string in tests:
with self.subTest(json_string=json_string):
val = field.clean(json_string)
self.assertEqual(field.clean(val), val)
def test_custom_encoder_decoder(self):
class CustomDecoder(json.JSONDecoder):
def __init__(self, object_hook=None, *args, **kwargs):
return super().__init__(object_hook=self.as_uuid,
*args,
**kwargs)
def as_uuid(self, dct):
if 'uuid' in dct:
dct['uuid'] = uuid.UUID(dct['uuid'])
return dct
value = {'uuid': uuid.UUID('{c141e152-6550-4172-a784-05448d98204b}')}
encoded_value = '{"uuid": "c141e152-6550-4172-a784-05448d98204b"}'
field = JSONField(encoder=DjangoJSONEncoder, decoder=CustomDecoder)
self.assertEqual(field.prepare_value(value), encoded_value)
self.assertEqual(field.clean(encoded_value), value)
def test_invalid(self):
field = JSONField()
with self.assertRaisesMessage(ValidationError, 'Enter a valid JSON.'):
field.clean('{some badly formed: json}')
def test_valid_empty(self):
field = JSONField(required=False)
self.assertIsNone(field.clean(''))
self.assertIsNone(field.clean(None))
def test_valid(self):
field = JSONField()
value = field.clean('{"a": "b"}')
self.assertEqual(value, {'a': 'b'})
def test_valid_empty(self):
field = JSONField(required=False)
value = field.clean('')
self.assertIsNone(value)