Test for #35997

Author: alippai

pandas/tests/io/test_parquet.py

@@ -712,6 +712,12 @@ def test_timestamp_nanoseconds(self, pa):
         df = pd.DataFrame({"a": pd.date_range("2017-01-01", freq="1n", periods=10)})
         check_round_trip(df, pa, write_kwargs={"version": "2.0"})
 
+    @td.skip_if_no("pyarrow", min_version="0.14")
+    def test_timezone_aware_index(self, pa):
+        idx = [datetime.datetime.now(datetime.timezone.utc)]
+        df = pd.DataFrame(index=idx)
+        check_round_trip(df, pa, write_kwargs={"version": "2.0"})
+
     @td.skip_if_no("pyarrow", min_version="0.17")
     def test_filter_row_groups(self, pa):
         # https://github.com/pandas-dev/pandas/issues/26551
@@ -850,3 +856,12 @@ def test_empty_dataframe(self, fp):
         expected = df.copy()
         expected.index.name = "index"
         check_round_trip(df, fp, expected=expected)
+
+    def test_timezone_aware_index(self, fp):
+        idx = [
+            datetime.datetime.strptime(
+                "2019-01-04T16:41:24+0200", "%Y-%m-%dT%H:%M:%S%z"
+            )
+        ]
+        df = pd.DataFrame(index=idx)
+        check_round_trip(df, fp)