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GeezerVison is showing github.com — bpo-43988: Add test.support.check_disallow_instantiation() (GH-25757) · python/cpython@4f72526

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  • Lib/test
    • support
      • __init__.py
    • test_array.py
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‎Lib/test/support/__init__.py‎

Copy file name to clipboardExpand all lines: Lib/test/support/__init__.py
+11Lines changed: 11 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -40,6 +40,7 @@
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"requires_IEEE_754", "requires_zlib",
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"anticipate_failure", "load_package_tests", "detect_api_mismatch",
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"check__all__", "skip_if_buggy_ucrt_strfptime",
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"check_disallow_instantiation",
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# sys
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"is_jython", "is_android", "check_impl_detail", "unix_shell",
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"setswitchinterval",
@@ -1982,3 +1983,13 @@ def skip_if_broken_multiprocessing_synchronize():
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synchronize.Lock(ctx=None)
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except OSError as exc:
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raise unittest.SkipTest(f"broken multiprocessing SemLock: {exc!r}")
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def check_disallow_instantiation(testcase, tp, *args, **kwds):
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"""
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Helper for testing types with the Py_TPFLAGS_DISALLOW_INSTANTIATION flag.
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See bpo-43916.
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"""
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msg = f"cannot create '{tp.__module__}\.{tp.__name__}' instances"
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testcase.assertRaisesRegex(TypeError, msg, tp, *args, **kwds)
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‎Lib/test/test_array.py‎

Copy file name to clipboardExpand all lines: Lib/test/test_array.py
+3-3Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -42,9 +42,9 @@ def test_bad_constructor(self):
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@support.cpython_only
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def test_disallow_instantiation(self):
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# Ensure that the type disallows instantiation (bpo-43916)
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tp = type(iter(array.array('I')))
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self.assertRaises(TypeError, tp)
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my_array = array.array("I")
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tp = type(iter(my_array))
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support.check_disallow_instantiation(self, tp, my_array)
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@support.cpython_only
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def test_immutable(self):

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