BUG: Move new test to test_multilevel.py

Author: snitish

pandas/tests/frame/methods/test_reset_index.py

@@ -544,27 +544,6 @@ def test_reset_index_datetime3(self, tz_naive_fixture):
         result = df.reset_index()
         tm.assert_frame_equal(result, expected)
 
-    def test_reset_index_multiindex_dt_with_nan(self):
-        # GH#60388
-        df = DataFrame(
-            {
-                "Date": [
-                    datetime(2024, 11, 1),
-                    datetime(2024, 11, 1),
-                    datetime(2024, 11, 2),
-                    datetime(2024, 11, 2),
-                ],
-                "sub": ["a", "b", "c", "d"],
-                "value1": [1, 2, 3, 4],
-                "value2": [5, 6, 7, 8],
-            }
-        )
-        df = df.pivot(index="sub", columns="Date", values=["value1", "value2"])
-        df = df.reset_index()
-        result = df[df.columns[0]]
-        expected = Series(["a", "b", "c", "d"], name=("sub", np.nan))
-        tm.assert_series_equal(result, expected)
-
     def test_reset_index_period(self):
         # GH#7746
         idx = MultiIndex.from_product(

pandas/tests/test_multilevel.py

@@ -295,6 +295,29 @@ def test_multiindex_insert_level_with_na(self, na):
         df[na, "B"] = 1
         tm.assert_frame_equal(df[na], DataFrame([1], columns=["B"]))
 
+    def test_multiindex_dt_with_nan(self):
+        # GH#60388
+        df = DataFrame(
+            [
+                [1, np.nan, 5, np.nan],
+                [2, np.nan, 6, np.nan],
+                [np.nan, 3, np.nan, 7],
+                [np.nan, 4, np.nan, 8],
+            ],
+            index=Series(["a", "b", "c", "d"], dtype=object, name="sub"),
+            columns=MultiIndex.from_product(
+                [
+                    ["value1", "value2"],
+                    [datetime.datetime(2024, 11, 1), datetime.datetime(2024, 11, 2)],
+                ],
+                names=[None, "Date"],
+            ),
+        )
+        df = df.reset_index()
+        result = df[df.columns[0]]
+        expected = Series(["a", "b", "c", "d"], name=("sub", np.nan))
+        tm.assert_series_equal(result, expected)
+
 
 class TestSorted:
     """everything you wanted to test about sorting"""