Add reflexive/transitive property tests for the Cidr Ord instance.

diff --git a/src/Cidr.hs b/src/Cidr.hs
index e353406d9eaa7303d6ba437d99d79083ffa1f586..d7f624654743f24f6c3ac4a85939c56159e69e1d 100644 (file)
--- a/src/Cidr.hs
+++ b/src/Cidr.hs
@@ -303,7 +303,9 @@ cidr_properties =
       prop_all_cidrs_contain_themselves,
       prop_contains_proper_antisymmetric,
       prop_normalize_idempotent,
-      prop_normalize_preserves_equality ]
+      prop_normalize_preserves_equality,
+      prop_ord_instance_reflexive,
+      prop_ord_instance_transitive ]
 
 
 -- HUnit Tests
@@ -548,7 +550,7 @@ prop_contains_proper_antisymmetric =
 -- Running "normalize" a second time shouldn't do anything.
 prop_normalize_idempotent :: TestTree
 prop_normalize_idempotent =
-  testProperty "The CIDR \"normalize\" function is idempotent " prop
+  testProperty "The CIDR \"normalize\" function is idempotent" prop
   where
     prop :: Cidr -> Bool
     prop cidr = (normalize cidr) == (normalize (normalize cidr))
@@ -556,7 +558,23 @@ prop_normalize_idempotent =
 -- Normalization should not affect equality of two CIDRs.
 prop_normalize_preserves_equality :: TestTree
 prop_normalize_preserves_equality =
-  testProperty "The CIDR \"normalize\" function preserves equality " prop
+  testProperty "The CIDR \"normalize\" function preserves equality" prop
   where
     prop :: Cidr -> Cidr -> Bool
     prop cidr1 cidr2 = (cidr1 == cidr2) == (normalize cidr1 == normalize cidr2)
+
+prop_ord_instance_reflexive :: TestTree
+prop_ord_instance_reflexive =
+  testProperty "The CIDR order is reflexive" prop
+  where
+    prop :: Cidr -> Bool
+    prop cidr = cidr <= cidr
+
+
+prop_ord_instance_transitive :: TestTree
+prop_ord_instance_transitive =
+  testProperty "The CIDR order is transitive" prop
+  where
+    prop :: Cidr -> Cidr -> Cidr -> Property
+    prop cidr1 cidr2 cidr3 =
+      (cidr1 <= cidr2 && cidr2 <= cidr3) ==> cidr1 <= cidr3