+import Test.Tasty ( TestTree, defaultMain, localOption, testGroup )
+import Test.Tasty.QuickCheck ( QuickCheckTests(..), QuickCheckMaxRatio(..) )
+import Cidr ( cidr_properties, cidr_tests )
+import IPv4Address ( ipv4address_properties, ipv4address_tests )
+import Octet ( octet_properties, octet_tests )