revert test_loc_setitem_consistency_empty test case after pandas-dev#49775

Author: xyxel

pandas/tests/indexing/test_indexing.py

@@ -633,11 +633,11 @@ def test_index_type_coercion(self, indexer):
 
     def test_setitem_one_element_list(self):
         # GH#52825
-        texts = ["abc"]
-        languages = ["en"]
-        df = DataFrame(columns=["text", "language"])
-        df.loc[:, "text"] = texts
-        df.loc[:, "language"] = languages
+        x_values = ["x_value"]
+        y_values = ["y_values"]
+        df = DataFrame(columns=["x", "y"])
+        df.loc[:, "x"] = x_values
+        df.loc[:, "y"] = y_values
         assert df.size == 2
 
 

pandas/tests/indexing/test_loc.py

@@ -614,18 +614,15 @@ def test_loc_setitem_consistency_single_row(self):
 
     def test_loc_setitem_consistency_empty(self):
         # empty (essentially noops)
-        # before the enforcement of #45333 in 2.0, the loc.setitem here would
-        #  change the dtype of df.x to int64
         expected = DataFrame(columns=["x", "y"])
+        expected["x"] = expected["x"].astype(np.int64)
         df = DataFrame(columns=["x", "y"])
         with tm.assert_produces_warning(None):
             df.loc[:, "x"] = 1
         tm.assert_frame_equal(df, expected)
 
-        # setting with setitem swaps in a new array, so changes the dtype
         df = DataFrame(columns=["x", "y"])
         df["x"] = 1
-        expected["x"] = expected["x"].astype(np.int64)
         tm.assert_frame_equal(df, expected)
 
     def test_loc_setitem_consistency_slice_column_len(self):