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import decimal
from decimal import Decimal
from unittest import TestCase
from simplejson.compat import StringIO, reload_module
import simplejson as json
class TestDecimal(TestCase):
NUMS = "1.0", "10.00", "1.1", "1234567890.1234567890", "500"
def dumps(self, obj, **kw):
sio = StringIO()
json.dump(obj, sio, **kw)
res = json.dumps(obj, **kw)
self.assertEqual(res, sio.getvalue())
return res
def loads(self, s, **kw):
sio = StringIO(s)
res = json.loads(s, **kw)
self.assertEqual(res, json.load(sio, **kw))
return res
def test_decimal_encode(self):
for d in map(Decimal, self.NUMS):
self.assertEqual(self.dumps(d, use_decimal=True), str(d))
def test_decimal_decode(self):
for s in self.NUMS:
self.assertEqual(self.loads(s, parse_float=Decimal), Decimal(s))
def test_stringify_key(self):
for d in map(Decimal, self.NUMS):
v = {d: d}
self.assertEqual(
self.loads(
self.dumps(v, use_decimal=True), parse_float=Decimal),
{str(d): d})
def test_decimal_roundtrip(self):
for d in map(Decimal, self.NUMS):
# The type might not be the same (int and Decimal) but they
# should still compare equal.
for v in [d, [d], {'': d}]:
self.assertEqual(
self.loads(
self.dumps(v, use_decimal=True), parse_float=Decimal),
v)
def test_decimal_defaults(self):
d = Decimal('1.1')
# use_decimal=True is the default
self.assertRaises(TypeError, json.dumps, d, use_decimal=False)
self.assertEqual('1.1', json.dumps(d))
self.assertEqual('1.1', json.dumps(d, use_decimal=True))
self.assertRaises(TypeError, json.dump, d, StringIO(),
use_decimal=False)
sio = StringIO()
json.dump(d, sio)
self.assertEqual('1.1', sio.getvalue())
sio = StringIO()
json.dump(d, sio, use_decimal=True)
self.assertEqual('1.1', sio.getvalue())
def test_decimal_reload(self):
# Simulate a subinterpreter that reloads the Python modules but not
# the C code https://github.com/simplejson/simplejson/issues/34
global Decimal
Decimal = reload_module(decimal).Decimal
import simplejson.encoder
simplejson.encoder.Decimal = Decimal
self.test_decimal_roundtrip()