Changed pytest.skip to pytest.xfail for visibility

Author: WillAyd

pandas/tests/io/test_excel.py

@@ -1357,7 +1357,7 @@ def test_to_excel_interval_labels(self, merge_cells, engine, ext):
     def test_to_excel_timedelta(self, merge_cells, engine, ext):
         # GH 19242, GH9155 - test writing timedelta to xls
         if engine == 'openpyxl':
-            pytest.skip('Timedelta roundtrip broken with openpyxl')
+            pytest.xfail('Timedelta roundtrip broken with openpyxl')
         frame = DataFrame(np.random.randint(-10, 10, size=(20, 1)),
                           columns=['A'],
                           dtype=np.int64