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[3.15] Add test for explicit cls argument bypassing default JSON decoder (GH-154094) #154112

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Merged
tomasr8 merged 1 commit into from
Jul 19, 2026
Merged

[3.15] Add test for explicit cls argument bypassing default JSON decoder (GH-154094) #154112

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10 changes: 10 additions & 0 deletions Lib/test/test_json/test_decode.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
import decimal
import unittest.mock
from io import StringIO
from collections import OrderedDict
from test.test_json import PyTest, CTest
Expand Down Expand Up @@ -155,6 +156,15 @@ def test_limit_int(self):
with self.assertRaises(ValueError):
self.loads('1' * (maxdigits + 1))

def test_explicit_cls_skips_json_decoder_default(self):
class CustomDecoder:
pass

with unittest.mock.patch.object(
CustomDecoder, 'decode', create=True) as mock_decode:
self.loads('{}', cls=CustomDecoder)
mock_decode.assert_called_once()


class TestPyDecode(TestDecode, PyTest): pass
class TestCDecode(TestDecode, CTest): pass
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