68 lines
1.6 KiB
Python
68 lines
1.6 KiB
Python
from unittest import TestCase
|
|
|
|
import simplejson as json
|
|
|
|
class JSONTestObject:
|
|
pass
|
|
|
|
|
|
class RecursiveJSONEncoder(json.JSONEncoder):
|
|
recurse = False
|
|
def default(self, o):
|
|
if o is JSONTestObject:
|
|
if self.recurse:
|
|
return [JSONTestObject]
|
|
else:
|
|
return 'JSONTestObject'
|
|
return json.JSONEncoder.default(o)
|
|
|
|
|
|
class TestRecursion(TestCase):
|
|
def test_listrecursion(self):
|
|
x = []
|
|
x.append(x)
|
|
try:
|
|
json.dumps(x)
|
|
except ValueError:
|
|
pass
|
|
else:
|
|
self.fail("didn't raise ValueError on list recursion")
|
|
x = []
|
|
y = [x]
|
|
x.append(y)
|
|
try:
|
|
json.dumps(x)
|
|
except ValueError:
|
|
pass
|
|
else:
|
|
self.fail("didn't raise ValueError on alternating list recursion")
|
|
y = []
|
|
x = [y, y]
|
|
# ensure that the marker is cleared
|
|
json.dumps(x)
|
|
|
|
def test_dictrecursion(self):
|
|
x = {}
|
|
x["test"] = x
|
|
try:
|
|
json.dumps(x)
|
|
except ValueError:
|
|
pass
|
|
else:
|
|
self.fail("didn't raise ValueError on dict recursion")
|
|
x = {}
|
|
y = {"a": x, "b": x}
|
|
# ensure that the marker is cleared
|
|
json.dumps(x)
|
|
|
|
def test_defaultrecursion(self):
|
|
enc = RecursiveJSONEncoder()
|
|
self.assertEquals(enc.encode(JSONTestObject), '"JSONTestObject"')
|
|
enc.recurse = True
|
|
try:
|
|
enc.encode(JSONTestObject)
|
|
except ValueError:
|
|
pass
|
|
else:
|
|
self.fail("didn't raise ValueError on default recursion")
|