gh-104015: Fix direct invocation of `test_dataclasses` (#104017)

Previously, `python -m test test_dataclasses` passed, but `./python.exe Lib/test/test_dataclasses.py` failed

diff --git a/Lib/test/test_dataclasses.py b/Lib/test/test_dataclasses.py
index 7dd81a8855f1be0fe77b6b81b999ed575fc7a95a..7b48b26f9e77436966ce03a10e675b66b8a92f08 100644 (file)
--- a/Lib/test/test_dataclasses.py
+++ b/Lib/test/test_dataclasses.py
@@ -3671,7 +3671,7 @@ class TestStringAnnotations(unittest.TestCase):
 ByMakeDataClass = make_dataclass('ByMakeDataClass', [('x', int)])
 ManualModuleMakeDataClass = make_dataclass('ManualModuleMakeDataClass',
                                            [('x', int)],
-                                           module='test.test_dataclasses')
+                                           module=__name__)
 WrongNameMakeDataclass = make_dataclass('Wrong', [('x', int)])
 WrongModuleMakeDataclass = make_dataclass('WrongModuleMakeDataclass',
                                           [('x', int)],