| import decimal |
| from io import StringIO |
| from collections import OrderedDict |
| from test.test_json import PyTest, CTest |
| |
| |
| class TestDecode: |
| def test_decimal(self): |
| rval = self.loads('1.1', parse_float=decimal.Decimal) |
| self.assertTrue(isinstance(rval, decimal.Decimal)) |
| self.assertEqual(rval, decimal.Decimal('1.1')) |
| |
| def test_float(self): |
| rval = self.loads('1', parse_int=float) |
| self.assertTrue(isinstance(rval, float)) |
| self.assertEqual(rval, 1.0) |
| |
| def test_empty_objects(self): |
| self.assertEqual(self.loads('{}'), {}) |
| self.assertEqual(self.loads('[]'), []) |
| self.assertEqual(self.loads('""'), "") |
| |
| def test_object_pairs_hook(self): |
| s = '{"xkd":1, "kcw":2, "art":3, "hxm":4, "qrt":5, "pad":6, "hoy":7}' |
| p = [("xkd", 1), ("kcw", 2), ("art", 3), ("hxm", 4), |
| ("qrt", 5), ("pad", 6), ("hoy", 7)] |
| self.assertEqual(self.loads(s), eval(s)) |
| self.assertEqual(self.loads(s, object_pairs_hook=lambda x: x), p) |
| self.assertEqual(self.json.load(StringIO(s), |
| object_pairs_hook=lambda x: x), p) |
| od = self.loads(s, object_pairs_hook=OrderedDict) |
| self.assertEqual(od, OrderedDict(p)) |
| self.assertEqual(type(od), OrderedDict) |
| # the object_pairs_hook takes priority over the object_hook |
| self.assertEqual(self.loads(s, object_pairs_hook=OrderedDict, |
| object_hook=lambda x: None), |
| OrderedDict(p)) |
| # check that empty object literals work (see #17368) |
| self.assertEqual(self.loads('{}', object_pairs_hook=OrderedDict), |
| OrderedDict()) |
| self.assertEqual(self.loads('{"empty": {}}', |
| object_pairs_hook=OrderedDict), |
| OrderedDict([('empty', OrderedDict())])) |
| |
| def test_decoder_optimizations(self): |
| # Several optimizations were made that skip over calls to |
| # the whitespace regex, so this test is designed to try and |
| # exercise the uncommon cases. The array cases are already covered. |
| rval = self.loads('{ "key" : "value" , "k":"v" }') |
| self.assertEqual(rval, {"key":"value", "k":"v"}) |
| |
| def check_keys_reuse(self, source, loads): |
| rval = loads(source) |
| (a, b), (c, d) = sorted(rval[0]), sorted(rval[1]) |
| self.assertIs(a, c) |
| self.assertIs(b, d) |
| |
| def test_keys_reuse(self): |
| s = '[{"a_key": 1, "b_\xe9": 2}, {"a_key": 3, "b_\xe9": 4}]' |
| self.check_keys_reuse(s, self.loads) |
| decoder = self.json.decoder.JSONDecoder() |
| self.check_keys_reuse(s, decoder.decode) |
| self.assertFalse(decoder.memo) |
| |
| def test_extra_data(self): |
| s = '[1, 2, 3]5' |
| msg = 'Extra data' |
| self.assertRaisesRegex(self.JSONDecodeError, msg, self.loads, s) |
| |
| def test_invalid_escape(self): |
| s = '["abc\\y"]' |
| msg = 'escape' |
| self.assertRaisesRegex(self.JSONDecodeError, msg, self.loads, s) |
| |
| def test_invalid_input_type(self): |
| msg = 'the JSON object must be str' |
| for value in [1, 3.14, [], {}, None]: |
| self.assertRaisesRegex(TypeError, msg, self.loads, value) |
| |
| def test_string_with_utf8_bom(self): |
| # see #18958 |
| bom_json = "[1,2,3]".encode('utf-8-sig').decode('utf-8') |
| with self.assertRaises(self.JSONDecodeError) as cm: |
| self.loads(bom_json) |
| self.assertIn('BOM', str(cm.exception)) |
| with self.assertRaises(self.JSONDecodeError) as cm: |
| self.json.load(StringIO(bom_json)) |
| self.assertIn('BOM', str(cm.exception)) |
| # make sure that the BOM is not detected in the middle of a string |
| bom_in_str = '"{}"'.format(''.encode('utf-8-sig').decode('utf-8')) |
| self.assertEqual(self.loads(bom_in_str), '\ufeff') |
| self.assertEqual(self.json.load(StringIO(bom_in_str)), '\ufeff') |
| |
| def test_negative_index(self): |
| d = self.json.JSONDecoder() |
| self.assertRaises(ValueError, d.raw_decode, 'a'*42, -50000) |
| |
| class TestPyDecode(TestDecode, PyTest): pass |
| class TestCDecode(TestDecode, CTest): pass |
