Use unittest to get assertRaisesRegex

Author: jtratner

pandas/tests/io/parser/test_parsers.py

@@ -1,8 +1,9 @@
 # -*- coding: utf-8 -*-
 
 import os
-
 import tempfile
+import unittest
+
 import pandas.util.testing as tm
 
 from pandas import read_csv, read_table
@@ -102,7 +103,7 @@ def read_table(self, *args, **kwds):
         return read_table(*args, **kwds)
 
 
-class TestParameterValidation(object):
+class TestParameterValidation(unittest.TestCase):
     def test_unknown_engine(self):
         with tempfile.NamedTemporaryFile() as fp:
             df = tm.makeDataFrame()