python (3.12.0)
1 from io import StringIO
2 from test.test_json import PyTest, CTest
3
4 from test.support import bigmemtest, _1G
5
6 class ESC[4;38;5;81mTestDump:
7 def test_dump(self):
8 sio = StringIO()
9 self.json.dump({}, sio)
10 self.assertEqual(sio.getvalue(), '{}')
11
12 def test_dumps(self):
13 self.assertEqual(self.dumps({}), '{}')
14
15 def test_dump_skipkeys(self):
16 v = {b'invalid_key': False, 'valid_key': True}
17 with self.assertRaises(TypeError):
18 self.json.dumps(v)
19
20 s = self.json.dumps(v, skipkeys=True)
21 o = self.json.loads(s)
22 self.assertIn('valid_key', o)
23 self.assertNotIn(b'invalid_key', o)
24
25 def test_encode_truefalse(self):
26 self.assertEqual(self.dumps(
27 {True: False, False: True}, sort_keys=True),
28 '{"false": true, "true": false}')
29 self.assertEqual(self.dumps(
30 {2: 3.0, 4.0: 5, False: 1, 6: True}, sort_keys=True),
31 '{"false": 1, "2": 3.0, "4.0": 5, "6": true}')
32
33 # Issue 16228: Crash on encoding resized list
34 def test_encode_mutated(self):
35 a = [object()] * 10
36 def crasher(obj):
37 del a[-1]
38 self.assertEqual(self.dumps(a, default=crasher),
39 '[null, null, null, null, null]')
40
41 # Issue 24094
42 def test_encode_evil_dict(self):
43 class ESC[4;38;5;81mD(ESC[4;38;5;149mdict):
44 def keys(self):
45 return L
46
47 class ESC[4;38;5;81mX:
48 def __hash__(self):
49 del L[0]
50 return 1337
51
52 def __lt__(self, o):
53 return 0
54
55 L = [X() for i in range(1122)]
56 d = D()
57 d[1337] = "true.dat"
58 self.assertEqual(self.dumps(d, sort_keys=True), '{"1337": "true.dat"}')
59
60
61 class ESC[4;38;5;81mTestPyDump(ESC[4;38;5;149mTestDump, ESC[4;38;5;149mPyTest): pass
62
63 class ESC[4;38;5;81mTestCDump(ESC[4;38;5;149mTestDump, ESC[4;38;5;149mCTest):
64
65 # The size requirement here is hopefully over-estimated (actual
66 # memory consumption depending on implementation details, and also
67 # system memory management, since this may allocate a lot of
68 # small objects).
69
70 @bigmemtest(size=_1G, memuse=1)
71 def test_large_list(self, size):
72 N = int(30 * 1024 * 1024 * (size / _1G))
73 l = [1] * N
74 encoded = self.dumps(l)
75 self.assertEqual(len(encoded), N * 3)
76 self.assertEqual(encoded[:1], "[")
77 self.assertEqual(encoded[-2:], "1]")
78 self.assertEqual(encoded[1:-2], "1, " * (N - 1))
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