fix tests by ignoring the warning for now

pandas/core/frame.py

@@ -657,7 +657,9 @@ def _sliced_from_mgr(self, mgr, axes) -> Series:
 
     def _constructor_sliced_from_mgr(self, mgr, axes):
         if self._constructor_sliced is Series:
-            return self._sliced_from_mgr(mgr, axes)
+            ser = self._sliced_from_mgr(mgr, axes)
+            ser._name = None  # caller is responsible for setting real name
+            return ser
         assert axes is mgr.axes
         return self._constructor_sliced(mgr)
 

pandas/core/series.py

@@ -634,7 +634,9 @@ def _constructor(self) -> Callable[..., Series]:
     def _constructor_from_mgr(self, mgr, axes):
         if self._constructor is Series:
             # we are pandas.Series (or a subclass that doesn't override _constructor)
-            return self._from_mgr(mgr, axes=axes)
+            ser = self._from_mgr(mgr, axes=axes)
+            ser._name = None  # caller is responsible for setting real name
+            return ser
         else:
             assert axes is mgr.axes
             return self._constructor(mgr)

pandas/tests/frame/test_arithmetic.py

@@ -2083,6 +2083,9 @@ def test_frame_sub_nullable_int(any_int_ea_dtype):
     tm.assert_frame_equal(result, expected)
 
 
+@pytest.mark.filterwarnings(
+    "ignore:Passing a BlockManager|Passing a SingleBlockManager:DeprecationWarning"
+)
 def test_frame_op_subclass_nonclass_constructor():
     # GH#43201 subclass._constructor is a function, not the subclass itself
 

pandas/tests/frame/test_subclass.py

@@ -10,6 +10,10 @@
 )
 import pandas._testing as tm
 
+pytestmark = pytest.mark.filterwarnings(
+    "ignore:Passing a BlockManager|Passing a SingleBlockManager:DeprecationWarning"
+)
+
 
 @pytest.fixture()
 def gpd_style_subclass_df():
@@ -734,7 +738,9 @@ def test_replace_list_method(self):
         # https://github.com/pandas-dev/pandas/pull/46018
         df = tm.SubclassedDataFrame({"A": [0, 1, 2]})
         msg = "The 'method' keyword in SubclassedDataFrame.replace is deprecated"
-        with tm.assert_produces_warning(FutureWarning, match=msg):
+        with tm.assert_produces_warning(
+            FutureWarning, match=msg, raise_on_extra_warnings=False
+        ):
             result = df.replace([1, 2], method="ffill")
         expected = tm.SubclassedDataFrame({"A": [0, 0, 0]})
         assert isinstance(result, tm.SubclassedDataFrame)

pandas/tests/groupby/test_groupby_subclass.py

@@ -11,6 +11,10 @@
 import pandas._testing as tm
 from pandas.tests.groupby import get_groupby_method_args
 
+pytestmark = pytest.mark.filterwarnings(
+    "ignore:Passing a BlockManager|Passing a SingleBlockManager:DeprecationWarning"
+)
+
 
 @pytest.mark.parametrize(
     "obj",
@@ -64,7 +68,9 @@ def func(group):
         return group.testattr
 
     msg = "DataFrameGroupBy.apply operated on the grouping columns"
-    with tm.assert_produces_warning(FutureWarning, match=msg):
+    with tm.assert_produces_warning(
+        FutureWarning, match=msg, raise_on_extra_warnings=False
+    ):
         result = custom_df.groupby("c").apply(func)
     expected = tm.SubclassedSeries(["hello"] * 3, index=Index([7, 8, 9], name="c"))
     tm.assert_series_equal(result, expected)
@@ -104,6 +110,8 @@ def test_groupby_resample_preserves_subclass(obj):
 
     # Confirm groupby.resample() preserves dataframe type
     msg = "DataFrameGroupBy.resample operated on the grouping columns"
-    with tm.assert_produces_warning(FutureWarning, match=msg):
+    with tm.assert_produces_warning(
+        FutureWarning, match=msg, raise_on_extra_warnings=False
+    ):
         result = df.groupby("Buyer").resample("5D").sum()
     assert isinstance(result, obj)

pandas/tests/reshape/concat/test_concat.py

@@ -591,6 +591,9 @@ def test_duplicate_keys_same_frame():
     tm.assert_frame_equal(result, expected)
 
 
+@pytest.mark.filterwarnings(
+    "ignore:Passing a BlockManager|Passing a SingleBlockManager:DeprecationWarning"
+)
 @pytest.mark.parametrize(
     "obj",
     [

pandas/tests/reshape/merge/test_merge.py

@@ -688,6 +688,9 @@ def test_merge_nan_right2(self):
         )[["i1", "i2", "i1_", "i3"]]
         tm.assert_frame_equal(result, expected)
 
+    @pytest.mark.filterwarnings(
+        "ignore:Passing a BlockManager|Passing a SingleBlockManager:DeprecationWarning"
+    )
     def test_merge_type(self, df, df2):
         class NotADataFrame(DataFrame):
             @property

pandas/tests/reshape/merge/test_merge_ordered.py

@@ -70,6 +70,9 @@ def test_multigroup(self, left, right):
         result = merge_ordered(left, right, on="key", left_by="group")
         assert result["group"].notna().all()
 
+    @pytest.mark.filterwarnings(
+        "ignore:Passing a BlockManager|Passing a SingleBlockManager:DeprecationWarning"
+    )
     def test_merge_type(self, left, right):
         class NotADataFrame(DataFrame):
             @property

pandas/tests/series/methods/test_to_frame.py

@@ -1,3 +1,5 @@
+import pytest
+
 from pandas import (
     DataFrame,
     Index,
@@ -40,6 +42,9 @@ def test_to_frame(self, datetime_series):
         )
         tm.assert_frame_equal(rs, xp)
 
+    @pytest.mark.filterwarnings(
+        "ignore:Passing a BlockManager|Passing a SingleBlockManager:DeprecationWarning"
+    )
     def test_to_frame_expanddim(self):
         # GH#9762
 

pandas/tests/series/test_subclass.py

@@ -4,6 +4,10 @@
 import pandas as pd
 import pandas._testing as tm
 
+pytestmark = pytest.mark.filterwarnings(
+    "ignore:Passing a BlockManager|Passing a SingleBlockManager:DeprecationWarning"
+)
+
 
 class TestSeriesSubclassing:
     @pytest.mark.parametrize(