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from unittest import TestCase
from simplejson.compat import StringIO, long_type, b
import simplejson as json
class TestDump(TestCase):
def test_dump(self):
sio = StringIO()
json.dump({}, sio)
self.assertEquals(sio.getvalue(), '{}')
def test_constants(self):
for c in [None, True, False]:
self.assert_(json.loads(json.dumps(c)) is c)
self.assert_(json.loads(json.dumps([c]))[0] is c)
self.assert_(json.loads(json.dumps({'a': c}))['a'] is c)
def test_stringify_key(self):
items = [(b('bytes'), 'bytes'),
(1.0, '1.0'),
(10, '10'),
(True, 'true'),
(False, 'false'),
(None, 'null'),
(long_type(100), '100')]
for k, expect in items:
self.assertEquals(
json.loads(json.dumps({k: expect})),
{expect: expect})
self.assertRaises(TypeError, json.dumps, {json: 1})
self.assertEquals(
json.loads(json.dumps({json: 1}, skipkeys=True)),
{})
def test_dumps(self):
self.assertEquals(json.dumps({}), '{}')
def test_encode_truefalse(self):
self.assertEquals(json.dumps(
{True: False, False: True}, sort_keys=True),
'{"false": true, "true": false}')
self.assertEquals(
json.dumps(
{2: 3.0,
4.0: long_type(5),
False: 1,
long_type(6): True,
"7": 0},
sort_keys=True),
'{"2": 3.0, "4.0": 5, "6": true, "7": 0, "false": 1}')
def test_ordered_dict(self):
# http://bugs.python.org/issue6105
items = [('one', 1), ('two', 2), ('three', 3), ('four', 4), ('five', 5)]
s = json.dumps(json.OrderedDict(items))
self.assertEqual(
s,
'{"one": 1, "two": 2, "three": 3, "four": 4, "five": 5}')
def test_indent_unknown_type_acceptance(self):
"""
A test against the regression mentioned at `github issue 29`_.
The indent parameter should accept any type which pretends to be
an instance of int or long when it comes to being multiplied by
strings, even if it is not actually an int or long, for
backwards compatibility.
.. _github issue 29:
http://github.com/simplejson/simplejson/issue/29
"""
class AwesomeInt(object):
"""An awesome reimplementation of integers"""
def __init__(self, *args, **kwargs):
if len(args) > 0:
# [construct from literals, objects, etc.]
# ...
# Finally, if args[0] is an integer, store it
if isinstance(args[0], int):
self._int = args[0]
# [various methods]
def __mul__(self, other):
# [various ways to multiply AwesomeInt objects]
# ... finally, if the right-hand operand is not awesome enough,
# try to do a normal integer multiplication
if hasattr(self, '_int'):
return self._int * other
else:
raise NotImplementedError("To do non-awesome things with"
" this object, please construct it from an integer!")
s = json.dumps([0, 1, 2], indent=AwesomeInt(3))
self.assertEqual(s, '[\n 0,\n 1,\n 2\n]')
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