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import sys
from unittest import TestCase
import simplejson as json
import simplejson.decoder
from simplejson.compat import b, PY3
class TestScanString(TestCase):
# The bytes type is intentionally not used in most of these tests
# under Python 3 because the decoder immediately coerces to str before
# calling scanstring. In Python 2 we are testing the code paths
# for both unicode and str.
#
# The reason this is done is because Python 3 would require
# entirely different code paths for parsing bytes and str.
#
def test_py_scanstring(self):
self._test_scanstring(simplejson.decoder.py_scanstring)
def test_c_scanstring(self):
if not simplejson.decoder.c_scanstring:
return
self._test_scanstring(simplejson.decoder.c_scanstring)
def _test_scanstring(self, scanstring):
self.assertEqual(
scanstring('"z\\ud834\\udd20x"', 1, None, True),
(u'z\U0001d120x', 16))
if sys.maxunicode == 65535:
self.assertEqual(
scanstring(u'"z\U0001d120x"', 1, None, True),
(u'z\U0001d120x', 6))
else:
self.assertEqual(
scanstring(u'"z\U0001d120x"', 1, None, True),
(u'z\U0001d120x', 5))
self.assertEqual(
scanstring('"\\u007b"', 1, None, True),
(u'{', 8))
self.assertEqual(
scanstring('"A JSON payload should be an object or array, not a string."', 1, None, True),
(u'A JSON payload should be an object or array, not a string.', 60))
self.assertEqual(
scanstring('["Unclosed array"', 2, None, True),
(u'Unclosed array', 17))
self.assertEqual(
scanstring('["extra comma",]', 2, None, True),
(u'extra comma', 14))
self.assertEqual(
scanstring('["double extra comma",,]', 2, None, True),
(u'double extra comma', 21))
self.assertEqual(
scanstring('["Comma after the close"],', 2, None, True),
(u'Comma after the close', 24))
self.assertEqual(
scanstring('["Extra close"]]', 2, None, True),
(u'Extra close', 14))
self.assertEqual(
scanstring('{"Extra comma": true,}', 2, None, True),
(u'Extra comma', 14))
self.assertEqual(
scanstring('{"Extra value after close": true} "misplaced quoted value"', 2, None, True),
(u'Extra value after close', 26))
self.assertEqual(
scanstring('{"Illegal expression": 1 + 2}', 2, None, True),
(u'Illegal expression', 21))
self.assertEqual(
scanstring('{"Illegal invocation": alert()}', 2, None, True),
(u'Illegal invocation', 21))
self.assertEqual(
scanstring('{"Numbers cannot have leading zeroes": 013}', 2, None, True),
(u'Numbers cannot have leading zeroes', 37))
self.assertEqual(
scanstring('{"Numbers cannot be hex": 0x14}', 2, None, True),
(u'Numbers cannot be hex', 24))
self.assertEqual(
scanstring('[[[[[[[[[[[[[[[[[[[["Too deep"]]]]]]]]]]]]]]]]]]]]', 21, None, True),
(u'Too deep', 30))
self.assertEqual(
scanstring('{"Missing colon" null}', 2, None, True),
(u'Missing colon', 16))
self.assertEqual(
scanstring('{"Double colon":: null}', 2, None, True),
(u'Double colon', 15))
self.assertEqual(
scanstring('{"Comma instead of colon", null}', 2, None, True),
(u'Comma instead of colon', 25))
self.assertEqual(
scanstring('["Colon instead of comma": false]', 2, None, True),
(u'Colon instead of comma', 25))
self.assertEqual(
scanstring('["Bad value", truth]', 2, None, True),
(u'Bad value', 12))
for c in map(chr, range(0x00, 0x1f)):
self.assertEqual(
scanstring(c + '"', 0, None, False),
(c, 2))
self.assertRaises(
ValueError,
scanstring, c + '"', 0, None, True)
self.assertRaises(ValueError, scanstring, '', 0, None, True)
self.assertRaises(ValueError, scanstring, 'a', 0, None, True)
self.assertRaises(ValueError, scanstring, '\\', 0, None, True)
self.assertRaises(ValueError, scanstring, '\\u', 0, None, True)
self.assertRaises(ValueError, scanstring, '\\u0', 0, None, True)
self.assertRaises(ValueError, scanstring, '\\u01', 0, None, True)
self.assertRaises(ValueError, scanstring, '\\u012', 0, None, True)
self.assertRaises(ValueError, scanstring, '\\u0123', 0, None, True)
if sys.maxunicode > 65535:
self.assertRaises(ValueError, scanstring, '\\ud834"', 0, None, True),
self.assertRaises(ValueError, scanstring, '\\ud834\\u"', 0, None, True),
self.assertRaises(ValueError, scanstring, '\\ud834\\x0123"', 0, None, True),
def test_issue3623(self):
self.assertRaises(ValueError, json.decoder.scanstring, "xxx", 1,
"xxx")
self.assertRaises(UnicodeDecodeError,
json.encoder.encode_basestring_ascii, b("xx\xff"))
def test_overflow(self):
# Python 2.5 does not have maxsize, Python 3 does not have maxint
maxsize = getattr(sys, 'maxsize', getattr(sys, 'maxint', None))
assert maxsize is not None
self.assertRaises(OverflowError, json.decoder.scanstring, "xxx",
maxsize + 1)