197 lines
7.2 KiB
Python
197 lines
7.2 KiB
Python
import sys
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from unittest import TestCase
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import simplejson as json
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import simplejson.decoder
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from simplejson.compat import b, PY3
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class TestScanString(TestCase):
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# The bytes type is intentionally not used in most of these tests
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# under Python 3 because the decoder immediately coerces to str before
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# calling scanstring. In Python 2 we are testing the code paths
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# for both unicode and str.
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#
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# The reason this is done is because Python 3 would require
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# entirely different code paths for parsing bytes and str.
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#
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def test_py_scanstring(self):
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self._test_scanstring(simplejson.decoder.py_scanstring)
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def test_c_scanstring(self):
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if not simplejson.decoder.c_scanstring:
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return
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self._test_scanstring(simplejson.decoder.c_scanstring)
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self.assertTrue(isinstance(simplejson.decoder.c_scanstring('""', 0)[0], str))
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def _test_scanstring(self, scanstring):
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if sys.maxunicode == 65535:
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self.assertEqual(
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scanstring(u'"z\U0001d120x"', 1, None, True),
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(u'z\U0001d120x', 6))
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else:
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self.assertEqual(
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scanstring(u'"z\U0001d120x"', 1, None, True),
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(u'z\U0001d120x', 5))
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self.assertEqual(
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scanstring('"\\u007b"', 1, None, True),
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(u'{', 8))
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self.assertEqual(
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scanstring('"A JSON payload should be an object or array, not a string."', 1, None, True),
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(u'A JSON payload should be an object or array, not a string.', 60))
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self.assertEqual(
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scanstring('["Unclosed array"', 2, None, True),
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(u'Unclosed array', 17))
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self.assertEqual(
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scanstring('["extra comma",]', 2, None, True),
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(u'extra comma', 14))
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self.assertEqual(
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scanstring('["double extra comma",,]', 2, None, True),
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(u'double extra comma', 21))
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self.assertEqual(
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scanstring('["Comma after the close"],', 2, None, True),
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(u'Comma after the close', 24))
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self.assertEqual(
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scanstring('["Extra close"]]', 2, None, True),
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(u'Extra close', 14))
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self.assertEqual(
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scanstring('{"Extra comma": true,}', 2, None, True),
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(u'Extra comma', 14))
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self.assertEqual(
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scanstring('{"Extra value after close": true} "misplaced quoted value"', 2, None, True),
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(u'Extra value after close', 26))
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self.assertEqual(
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scanstring('{"Illegal expression": 1 + 2}', 2, None, True),
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(u'Illegal expression', 21))
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self.assertEqual(
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scanstring('{"Illegal invocation": alert()}', 2, None, True),
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(u'Illegal invocation', 21))
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self.assertEqual(
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scanstring('{"Numbers cannot have leading zeroes": 013}', 2, None, True),
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(u'Numbers cannot have leading zeroes', 37))
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self.assertEqual(
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scanstring('{"Numbers cannot be hex": 0x14}', 2, None, True),
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(u'Numbers cannot be hex', 24))
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self.assertEqual(
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scanstring('[[[[[[[[[[[[[[[[[[[["Too deep"]]]]]]]]]]]]]]]]]]]]', 21, None, True),
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(u'Too deep', 30))
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self.assertEqual(
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scanstring('{"Missing colon" null}', 2, None, True),
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(u'Missing colon', 16))
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self.assertEqual(
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scanstring('{"Double colon":: null}', 2, None, True),
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(u'Double colon', 15))
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self.assertEqual(
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scanstring('{"Comma instead of colon", null}', 2, None, True),
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(u'Comma instead of colon', 25))
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self.assertEqual(
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scanstring('["Colon instead of comma": false]', 2, None, True),
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(u'Colon instead of comma', 25))
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self.assertEqual(
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scanstring('["Bad value", truth]', 2, None, True),
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(u'Bad value', 12))
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for c in map(chr, range(0x00, 0x1f)):
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self.assertEqual(
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scanstring(c + '"', 0, None, False),
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(c, 2))
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self.assertRaises(
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ValueError,
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scanstring, c + '"', 0, None, True)
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self.assertRaises(ValueError, scanstring, '', 0, None, True)
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self.assertRaises(ValueError, scanstring, 'a', 0, None, True)
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self.assertRaises(ValueError, scanstring, '\\', 0, None, True)
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self.assertRaises(ValueError, scanstring, '\\u', 0, None, True)
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self.assertRaises(ValueError, scanstring, '\\u0', 0, None, True)
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self.assertRaises(ValueError, scanstring, '\\u01', 0, None, True)
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self.assertRaises(ValueError, scanstring, '\\u012', 0, None, True)
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self.assertRaises(ValueError, scanstring, '\\u0123', 0, None, True)
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if sys.maxunicode > 65535:
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self.assertRaises(ValueError,
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scanstring, '\\ud834\\u"', 0, None, True)
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self.assertRaises(ValueError,
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scanstring, '\\ud834\\x0123"', 0, None, True)
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def test_issue3623(self):
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self.assertRaises(ValueError, json.decoder.scanstring, "xxx", 1,
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"xxx")
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self.assertRaises(UnicodeDecodeError,
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json.encoder.encode_basestring_ascii, b("xx\xff"))
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def test_overflow(self):
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# Python 2.5 does not have maxsize, Python 3 does not have maxint
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maxsize = getattr(sys, 'maxsize', getattr(sys, 'maxint', None))
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assert maxsize is not None
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self.assertRaises(OverflowError, json.decoder.scanstring, "xxx",
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maxsize + 1)
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def test_surrogates(self):
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scanstring = json.decoder.scanstring
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def assertScan(given, expect, test_utf8=True):
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givens = [given]
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if not PY3 and test_utf8:
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givens.append(given.encode('utf8'))
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for given in givens:
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(res, count) = scanstring(given, 1, None, True)
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self.assertEqual(len(given), count)
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self.assertEqual(res, expect)
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assertScan(
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u'"z\\ud834\\u0079x"',
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u'z\ud834yx')
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assertScan(
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u'"z\\ud834\\udd20x"',
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u'z\U0001d120x')
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assertScan(
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u'"z\\ud834\\ud834\\udd20x"',
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u'z\ud834\U0001d120x')
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assertScan(
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u'"z\\ud834x"',
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u'z\ud834x')
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assertScan(
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u'"z\\udd20x"',
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u'z\udd20x')
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assertScan(
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u'"z\ud834x"',
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u'z\ud834x')
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# It may look strange to join strings together, but Python is drunk.
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# https://gist.github.com/etrepum/5538443
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assertScan(
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u'"z\\ud834\udd20x12345"',
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u''.join([u'z\ud834', u'\udd20x12345']))
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assertScan(
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u'"z\ud834\\udd20x"',
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u''.join([u'z\ud834', u'\udd20x']))
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# these have different behavior given UTF8 input, because the surrogate
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# pair may be joined (in maxunicode > 65535 builds)
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assertScan(
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u''.join([u'"z\ud834', u'\udd20x"']),
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u''.join([u'z\ud834', u'\udd20x']),
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test_utf8=False)
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self.assertRaises(ValueError,
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scanstring, u'"z\\ud83x"', 1, None, True)
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self.assertRaises(ValueError,
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scanstring, u'"z\\ud834\\udd2x"', 1, None, True)
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