Fix maec tests

Author: emmanvg

stix/test/extensions/malware/maec_4_1_malware_test.py

@@ -152,20 +152,20 @@ def test_parsing_maec_fails(self):
         try:
             STIXPackage.from_xml(PythonMAECInPackageTests.XML_MAEC)
         except ImportError as e:
-            self.assertEqual(str(e), "No module named 'maec'")
+            self.assertTrue(all(x in str(e) for x in ("No module named", "maec")))
 
     def test_handling_maec_object_fails(self):
         try:
             MAECInstance().from_dict(PythonMAECTests._full_dict)
         except ImportError as e:
-            self.assertEqual(str(e), "No module named 'maec'")
+            self.assertTrue(all(x in str(e) for x in ("No module named", "maec")))
 
     def test_setting_maec_property_fails(self):
         try:
             m = MAECInstance()
             m.maec = "foo"
         except ImportError as e:
-            self.assertEqual(str(e), "No module named 'maec'")
+            self.assertTrue(all(x in str(e) for x in ("No module named", "maec")))
 
 
 if __name__ == "__main__":