TST: Skip if no openpyxl in test_excel (pandas-dev#17883)

gfyoung · No-Stream · commit cce82e841eb4 · 2017-11-28T15:15:14.000-08:00
"test_read_excel_parse_dates" was calling "to_excel" without checking if "openpyxl" was installed.
diff --git a/pandas/tests/io/test_excel.py b/pandas/tests/io/test_excel.py
@@ -975,6 +975,7 @@ def test_read_excel_chunksize(self):
 
     def test_read_excel_parse_dates(self):
         # GH 11544, 12051
+        _skip_if_no_openpyxl()
 
         df = DataFrame(
             {'col': [1, 2, 3],
