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import unittest
import simplejson as json
from StringIO import StringIO
try:
from collections import namedtuple
except ImportError:
class Value(tuple):
def _asdict(self):
return {'value': self[0]}
class Point(tuple):
def _asdict(self):
return {'x': self[0], 'y': self[1]}
else:
Value = namedtuple('Value', ['value'])
Point = namedtuple('Point', ['x', 'y'])
class TestNamedTuple(unittest.TestCase):
def test_namedtuple_dumps(self):
for v in [Value(1), Point(1, 2)]:
d = v._asdict()
l = list(v)
self.assertEqual(d, json.loads(json.dumps(v)))
self.assertEqual(
d,
json.loads(json.dumps(v, namedtuple_as_object=True)))
self.assertEqual(d, json.loads(json.dumps(v, tuple_as_array=False)))
self.assertEqual(
d,
json.loads(json.dumps(v, namedtuple_as_object=True,
tuple_as_array=False)))
self.assertEqual(
l,
json.loads(json.dumps(v, namedtuple_as_object=False)))
self.assertRaises(TypeError, json.dumps, v,
tuple_as_array=False, namedtuple_as_object=False)
def test_namedtuple_dump(self):
for v in [Value(1), Point(1, 2)]:
d = v._asdict()
l = list(v)
sio = StringIO()
json.dump(v, sio)
self.assertEqual(d, json.loads(sio.getvalue()))
sio = StringIO()
json.dump(v, sio, namedtuple_as_object=True)
self.assertEqual(
d,
json.loads(sio.getvalue()))
sio = StringIO()
json.dump(v, sio, tuple_as_array=False)
self.assertEqual(d, json.loads(sio.getvalue()))
sio = StringIO()
json.dump(v, sio, namedtuple_as_object=True,
tuple_as_array=False)
self.assertEqual(
d,
json.loads(sio.getvalue()))
sio = StringIO()
json.dump(v, sio, namedtuple_as_object=False)
self.assertEqual(
l,
json.loads(sio.getvalue()))
self.assertRaises(TypeError, json.dump, v, StringIO(),
tuple_as_array=False, namedtuple_as_object=False)
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