fixup

Author: MarcoGorelli

pandas/tests/dtypes/test_generic.py

@@ -18,7 +18,7 @@
 class TestABCClasses:
     tuples = [[1, 2, 2], ["red", "blue", "red"]]
     multi_index = pd.MultiIndex.from_arrays(tuples, names=("number", "color"))
-    datetime_index = pd.to_datetime(["2000/1/1", "2010/1/1"])
+    datetime_index = pd.to_datetime(["1/1/2000", "1/1/2010"])
     timedelta_index = pd.to_timedelta(np.arange(5), unit="s")
     period_index = pd.period_range("1/1/2000", "1/1/2010", freq="M")
     categorical = pd.Categorical([1, 2, 3], categories=[2, 3, 1])

pandas/tests/io/parser/test_parse_dates.py

@@ -1630,12 +1630,7 @@ def test_parse_date_column_with_empty_string(all_parsers):
     # see gh-6428
     parser = all_parsers
     data = "case,opdate\n7,10/18/2006\n7,10/18/2008\n621, "
-    result = parser.read_csv_check_warnings(
-        UserWarning,
-        "Parsing datetime strings without a format specified",
-        StringIO(data),
-        parse_dates=["opdate"],
-    )
+    result = parser.read_csv(StringIO(data), parse_dates=["opdate"])
 
     expected_data = [[7, "10/18/2006"], [7, "10/18/2008"], [621, " "]]
     expected = DataFrame(expected_data, columns=["case", "opdate"])