1import sys
2from json.tests import PyTest, CTest
3
4
5class TestScanstring(object):
6    def test_scanstring(self):
7        scanstring = self.json.decoder.scanstring
8        self.assertEqual(
9            scanstring('"z\\ud834\\udd20x"', 1, None, True),
10            (u'z\U0001d120x', 16))
11
12        if sys.maxunicode == 65535:
13            self.assertEqual(
14                scanstring(u'"z\U0001d120x"', 1, None, True),
15                (u'z\U0001d120x', 6))
16        else:
17            self.assertEqual(
18                scanstring(u'"z\U0001d120x"', 1, None, True),
19                (u'z\U0001d120x', 5))
20
21        self.assertEqual(
22            scanstring('"\\u007b"', 1, None, True),
23            (u'{', 8))
24
25        self.assertEqual(
26            scanstring('"A JSON payload should be an object or array, not a string."', 1, None, True),
27            (u'A JSON payload should be an object or array, not a string.', 60))
28
29        self.assertEqual(
30            scanstring('["Unclosed array"', 2, None, True),
31            (u'Unclosed array', 17))
32
33        self.assertEqual(
34            scanstring('["extra comma",]', 2, None, True),
35            (u'extra comma', 14))
36
37        self.assertEqual(
38            scanstring('["double extra comma",,]', 2, None, True),
39            (u'double extra comma', 21))
40
41        self.assertEqual(
42            scanstring('["Comma after the close"],', 2, None, True),
43            (u'Comma after the close', 24))
44
45        self.assertEqual(
46            scanstring('["Extra close"]]', 2, None, True),
47            (u'Extra close', 14))
48
49        self.assertEqual(
50            scanstring('{"Extra comma": true,}', 2, None, True),
51            (u'Extra comma', 14))
52
53        self.assertEqual(
54            scanstring('{"Extra value after close": true} "misplaced quoted value"', 2, None, True),
55            (u'Extra value after close', 26))
56
57        self.assertEqual(
58            scanstring('{"Illegal expression": 1 + 2}', 2, None, True),
59            (u'Illegal expression', 21))
60
61        self.assertEqual(
62            scanstring('{"Illegal invocation": alert()}', 2, None, True),
63            (u'Illegal invocation', 21))
64
65        self.assertEqual(
66            scanstring('{"Numbers cannot have leading zeroes": 013}', 2, None, True),
67            (u'Numbers cannot have leading zeroes', 37))
68
69        self.assertEqual(
70            scanstring('{"Numbers cannot be hex": 0x14}', 2, None, True),
71            (u'Numbers cannot be hex', 24))
72
73        self.assertEqual(
74            scanstring('[[[[[[[[[[[[[[[[[[[["Too deep"]]]]]]]]]]]]]]]]]]]]', 21, None, True),
75            (u'Too deep', 30))
76
77        self.assertEqual(
78            scanstring('{"Missing colon" null}', 2, None, True),
79            (u'Missing colon', 16))
80
81        self.assertEqual(
82            scanstring('{"Double colon":: null}', 2, None, True),
83            (u'Double colon', 15))
84
85        self.assertEqual(
86            scanstring('{"Comma instead of colon", null}', 2, None, True),
87            (u'Comma instead of colon', 25))
88
89        self.assertEqual(
90            scanstring('["Colon instead of comma": false]', 2, None, True),
91            (u'Colon instead of comma', 25))
92
93        self.assertEqual(
94            scanstring('["Bad value", truth]', 2, None, True),
95            (u'Bad value', 12))
96
97    def test_issue3623(self):
98        self.assertRaises(ValueError, self.json.decoder.scanstring, b"xxx", 1,
99                          "xxx")
100        self.assertRaises(UnicodeDecodeError,
101                          self.json.encoder.encode_basestring_ascii, b"xx\xff")
102
103    def test_overflow(self):
104        with self.assertRaises(OverflowError):
105            self.json.decoder.scanstring(b"xxx", sys.maxsize+1)
106
107
108class TestPyScanstring(TestScanstring, PyTest): pass
109class TestCScanstring(TestScanstring, CTest): pass
110