--- /dev/null
+--- cssutils-1.0.2/src/cssutils/tests/test_cssutils.py.orig 2017-03-04 10:53:23.000000000 +0100
++++ cssutils-1.0.2/src/cssutils/tests/test_cssutils.py 2017-07-03 21:07:40.163504334 +0200
+@@ -13,8 +13,7 @@
+ try:
+ import mock
+ except ImportError:
+- mock = None
+- print "install mock library to run all tests"
++ import unittest.mock as mock
+
+
+ class CSSutilsTestCase(basetest.BaseTestCase):
+--- cssutils-1.0.2/src/cssutils/tests/test_parse.py.orig 2015-11-25 23:11:26.000000000 +0100
++++ cssutils-1.0.2/src/cssutils/tests/test_parse.py 2017-07-03 21:08:16.740170584 +0200
+@@ -12,8 +12,7 @@
+ try:
+ import mock
+ except ImportError:
+- mock = None
+- print "install mock library to run all tests"
++ import unittest.mock as mock
+
+
+ class CSSParserTestCase(basetest.BaseTestCase):
+--- cssutils-1.0.2/src/cssutils/tests/test_util.py.orig 2016-10-27 13:55:21.000000000 +0200
++++ cssutils-1.0.2/src/cssutils/tests/test_util.py 2017-07-03 21:08:36.456837025 +0200
+@@ -13,8 +13,7 @@
+ try:
+ import mock
+ except ImportError:
+- mock = None
+- print "install mock library to run all tests"
++ import unittest.mock as mock
+
+ import basetest
+ import encutils