--- 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