Remove ignores and test warning

Author: jhendricks487

doc/source/whatsnew/v3.0.0.rst

@@ -416,6 +416,7 @@ Other Deprecations
 - Deprecated allowing non-keyword arguments in :meth:`Series.to_string` except ``buf``. (:issue:`57280`)
 - Deprecated behavior of :meth:`.DataFrameGroupBy.groups` and :meth:`.SeriesGroupBy.groups`, in a future version ``groups`` by one element list will return tuple instead of scalar. (:issue:`58858`)
 - Deprecated behavior of :meth:`Series.dt.to_pytimedelta`, in a future version this will return a :class:`Series` containing python ``datetime.timedelta`` objects instead of an ``ndarray`` of timedelta; this matches the behavior of other :meth:`Series.dt` properties. (:issue:`57463`)
+- Deprecated empty string in :class:`Timestamp` (:issue:`61149`)
 - Deprecated lowercase strings ``d``, ``b`` and ``c`` denoting frequencies in :class:`Day`, :class:`BusinessDay` and :class:`CustomBusinessDay` in favour of ``D``, ``B`` and ``C`` (:issue:`58998`)
 - Deprecated lowercase strings ``w``, ``w-mon``, ``w-tue``, etc. denoting frequencies in :class:`Week` in favour of ``W``, ``W-MON``, ``W-TUE``, etc. (:issue:`58998`)
 - Deprecated parameter ``method`` in :meth:`DataFrame.reindex_like` / :meth:`Series.reindex_like` (:issue:`58667`)

pandas/tests/indexing/test_loc.py

@@ -2067,10 +2067,7 @@ def test_loc_setitem_with_expansion_inf_upcast_empty(self):
         expected = Index([0, 1, np.inf], dtype=np.float64)
         tm.assert_index_equal(result, expected)
 
-    @pytest.mark.filterwarnings(
-        "ignore:indexing past lexsort depth",
-        "ignore:Passing an empty string to Timestamp",
-    )
+    @pytest.mark.filterwarnings("ignore:indexing past lexsort depth")
     def test_loc_setitem_with_expansion_nonunique_index(self, index):
         # GH#40096
         if not len(index):

pandas/tests/io/formats/test_to_csv.py

@@ -297,7 +297,6 @@ def test_to_csv_different_datetime_formats(self):
         expected = tm.convert_rows_list_to_csv_str(expected_rows)
         assert df.to_csv(index=False) == expected
 
-    @pytest.mark.filterwarnings("ignore:Passing an empty string to Timestamp")
     def test_to_csv_date_format_in_categorical(self):
         # GH#40754
         ser = pd.Series(pd.to_datetime(["2021-03-27", pd.NaT], format="%Y-%m-%d"))

pandas/tests/scalar/timestamp/test_constructors.py

@@ -62,6 +62,11 @@ def test_constructor_float_not_round_with_YM_unit_raises(self):
         with pytest.raises(ValueError, match=msg):
             Timestamp(150.5, unit="M")
 
+    def test_constructor_with_empty_string(self):
+        msg = "Passing an empty string to Timestamp"
+        with tm.assert_produces_warning(DeprecationWarning, match=msg):
+            Timestamp("")
+
     @pytest.mark.parametrize(
         "value, check_kwargs",
         [

pandas/tests/test_multilevel.py

@@ -295,7 +295,6 @@ def test_multiindex_insert_level_with_na(self, na):
         df[na, "B"] = 1
         tm.assert_frame_equal(df[na], DataFrame([1], columns=["B"]))
 
-    @pytest.mark.filterwarnings("ignore:Passing an empty string to Timestamp")
     def test_multiindex_dt_with_nan(self):
         # GH#60388
         df = DataFrame(