Merge branch 'main' into depr-isetitem

pandas/tests/extension/base/setitem.py

@@ -373,6 +373,12 @@ def test_setitem_frame_2d_values(self, data):
             data.dtype, (PandasDtype, PeriodDtype, IntervalDtype, DatetimeTZDtype)
         )
 
+        # Avoiding using_array_manager fixture
+        #  https://github.com/pandas-dev/pandas/pull/44514#discussion_r754002410
+        using_array_manager = isinstance(df._mgr, pd.core.internals.ArrayManager)
+
+        blk_data = df._mgr.arrays[0]
+
         orig = df.copy()
 
         msg = "will attempt to set the values inplace instead"

pandas/tests/indexing/test_iloc.py

@@ -893,6 +893,7 @@ def test_iloc_setitem_categorical_updates_inplace(self):
         msg = "will attempt to set the values inplace instead"
         with tm.assert_produces_warning(FutureWarning, match=msg):
             df.iloc[:, 0] = cat[::-1]
+        assert tm.shares_memory(df[1], cat)
 
         expected = Categorical(["C", "B", "A"], categories=["A", "B", "C"])
         tm.assert_categorical_equal(cat, expected)