make test mirror GH pandas-dev#54191

Author: Julian048

pandas/tests/frame/methods/test_convert_dtypes.py

@@ -168,17 +168,10 @@ def test_convert_dtypes_pyarrow_to_np_nullable(self):
         expected = pd.DataFrame(range(2), dtype="Int32")
         tm.assert_frame_equal(result, expected)
 
-    def test_convert_dtypes_timestamp_and_duration(self):
+    def test_convert_dtypes_pyarrow_timestamp(self):
         # GH 54191
         pytest.importorskip("pyarrow")
-        timestamp_series = pd.Series(
-            pd.date_range("2020-01-01", "2020-01-02", freq="1440min")
-        ).astype("timestamp[ms][pyarrow]")
-        duration_series = pd.Series(pd.timedelta_range("1s", "2s", freq="1s")).astype(
-            "duration[ms][pyarrow]"
-        )
-
-        expected = pd.concat([timestamp_series, duration_series], axis=1)
-        result = expected.convert_dtypes(dtype_backend="pyarrow")
-
-        tm.assert_frame_equal(expected, result)
+        ser = pd.Series(pd.date_range("2020-01-01", "2020-01-02", freq="1min"))
+        expected = ser.astype("timestamp[ms][pyarrow]")
+        result = ser.convert_dtypes(dtype_backend="pyarrow")
+        tm.assert_series_equal(result, expected)