Use unittest2 when testing Python 2.6

Author: tcalmant

setup.py

@@ -34,6 +34,8 @@
 
 # ------------------------------------------------------------------------------
 
+import sys
+
 try:
     from setuptools import setup
 except ImportError:
@@ -67,4 +69,6 @@
         'Programming Language :: Python :: 3.1',
         'Programming Language :: Python :: 3.2',
         'Programming Language :: Python :: 3.3',
-        'Programming Language :: Python :: 3.4'])
+        'Programming Language :: Python :: 3.4'],
+    tests_require=['unittest2'] if sys.version_info < (2, 7) else []
+)

tests/test_config.py

@@ -10,7 +10,10 @@
 from jsonrpclib.config import Config
 
 # Standard library
-import unittest
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
 
 # ------------------------------------------------------------------------------