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