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import sys
import decimal
from unittest import TestCase
import json
import json.decoder
class TestScanString(TestCase):
def test_py_scanstring(self):
self._test_scanstring(json.decoder.py_scanstring)
def test_c_scanstring(self):
if json.decoder.c_scanstring is not None:
self._test_scanstring(json.decoder.c_scanstring)
def _test_scanstring(self, scanstring):
self.assertEquals(
scanstring('"z\\ud834\\udd20x"', 1, True),
('z\U0001d120x', 16))
if sys.maxunicode == 65535:
self.assertEquals(
scanstring('"z\U0001d120x"', 1, True),
('z\U0001d120x', 6))
else:
self.assertEquals(
scanstring('"z\U0001d120x"', 1, True),
('z\U0001d120x', 5))
self.assertEquals(
scanstring('"\\u007b"', 1, True),
('{', 8))
self.assertEquals(
scanstring('"A JSON payload should be an object or array, not a string."', 1, True),
('A JSON payload should be an object or array, not a string.', 60))
self.assertEquals(
scanstring('["Unclosed array"', 2, True),
('Unclosed array', 17))
self.assertEquals(
scanstring('["extra comma",]', 2, True),
('extra comma', 14))
self.assertEquals(
scanstring('["double extra comma",,]', 2, True),
('double extra comma', 21))
self.assertEquals(
scanstring('["Comma after the close"],', 2, True),
('Comma after the close', 24))
self.assertEquals(
scanstring('["Extra close"]]', 2, True),
('Extra close', 14))
self.assertEquals(
scanstring('{"Extra comma": true,}', 2, True),
('Extra comma', 14))
self.assertEquals(
scanstring('{"Extra value after close": true} "misplaced quoted value"', 2, True),
('Extra value after close', 26))
self.assertEquals(
scanstring('{"Illegal expression": 1 + 2}', 2, True),
('Illegal expression', 21))
self.assertEquals(
scanstring('{"Illegal invocation": alert()}', 2, True),
('Illegal invocation', 21))
self.assertEquals(
scanstring('{"Numbers cannot have leading zeroes": 013}', 2, True),
('Numbers cannot have leading zeroes', 37))
self.assertEquals(
scanstring('{"Numbers cannot be hex": 0x14}', 2, True),
('Numbers cannot be hex', 24))
self.assertEquals(
scanstring('[[[[[[[[[[[[[[[[[[[["Too deep"]]]]]]]]]]]]]]]]]]]]', 21, True),
('Too deep', 30))
self.assertEquals(
scanstring('{"Missing colon" null}', 2, True),
('Missing colon', 16))
self.assertEquals(
scanstring('{"Double colon":: null}', 2, True),
('Double colon', 15))
self.assertEquals(
scanstring('{"Comma instead of colon", null}', 2, True),
('Comma instead of colon', 25))
self.assertEquals(
scanstring('["Colon instead of comma": false]', 2, True),
('Colon instead of comma', 25))
self.assertEquals(
scanstring('["Bad value", truth]', 2, True),
('Bad value', 12))
def test_overflow(self):
self.assertRaises(OverflowError, json.decoder.scanstring, b"xxx", sys.maxsize+1)
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