[3.10] gh-100287: Fix unittest.mock.seal with AsyncMock (GH-100496) (#100508)

(cherry picked from commit e4b43ebb3afbd231a4e5630e7e358aa3093f8677)

Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/Lib/unittest/mock.py b/Lib/unittest/mock.py
index a647e5d..7832092 100644
--- a/Lib/unittest/mock.py
+++ b/Lib/unittest/mock.py
@@ -1010,15 +1010,15 @@ class NonCallableMock(Base):
 
         For non-callable mocks the callable variant will be used (rather than
         any custom subclass)."""
-        _new_name = kw.get("_new_name")
-        if _new_name in self.__dict__['_spec_asyncs']:
-            return AsyncMock(**kw)
-
         if self._mock_sealed:
             attribute = f".{kw['name']}" if "name" in kw else "()"
             mock_name = self._extract_mock_name() + attribute
             raise AttributeError(mock_name)
 
+        _new_name = kw.get("_new_name")
+        if _new_name in self.__dict__['_spec_asyncs']:
+            return AsyncMock(**kw)
+
         _type = type(self)
         if issubclass(_type, MagicMock) and _new_name in _async_method_magics:
             # Any asynchronous magic becomes an AsyncMock