From 5d1b7d51854d355bf5b6438c1a96ce9e743fd810 Mon Sep 17 00:00:00 2001
From: Julien Tanguy <julien.tanguy@jhome.fr>
Date: Fri, 15 May 2015 16:03:30 +0200
Subject: Add quickcheck properties

---
 src/Crypto/Macaroon/Verifier.hs                 |  6 ++---
 test/Crypto/Macaroon/Serializer/Base64/Tests.hs |  2 +-
 test/Crypto/Macaroon/Verifier/Tests.hs          | 30 ++++++++++++++++---------
 3 files changed, 23 insertions(+), 15 deletions(-)

diff --git a/src/Crypto/Macaroon/Verifier.hs b/src/Crypto/Macaroon/Verifier.hs
index 0d1636c..e257f5f 100644
--- a/src/Crypto/Macaroon/Verifier.hs
+++ b/src/Crypto/Macaroon/Verifier.hs
@@ -24,10 +24,10 @@ import           Crypto.Macaroon.Internal
 
 
 -- | Opaque datatype for now. Might need more explicit errors
-data Result = Success | Failure deriving (Show,Eq)
+data VResult = VSuccess | VFailure deriving (Show,Eq)
 
-verifySig :: Key -> Macaroon -> Result
-verifySig k m = bool Failure Success $
+verifySig :: Key -> Macaroon -> VResult
+verifySig k m = bool VFailure VSuccess $
       signature m == foldl' hash (toBytes (hmac derivedKey (identifier m) :: HMAC SHA256)) (caveats m)
   where
     hash s c = toBytes (hmac s (vid c `BS.append` cid c) :: HMAC SHA256)
diff --git a/test/Crypto/Macaroon/Serializer/Base64/Tests.hs b/test/Crypto/Macaroon/Serializer/Base64/Tests.hs
index 19084af..ea3bed9 100644
--- a/test/Crypto/Macaroon/Serializer/Base64/Tests.hs
+++ b/test/Crypto/Macaroon/Serializer/Base64/Tests.hs
@@ -30,7 +30,7 @@ tests = testGroup "Crypto.Macaroon.Serializer.Base64" [ basic
                                                       ]
 
 basicQC = testProperty "Reversibility" $
-    forAll (macaroon <$> arbitrary) (\m -> deserialize (serialize m) == Right m)
+    \sm -> deserialize (serialize (macaroon sm)) == Right (macaroon sm)
 
 m :: Macaroon
 m = create secret key loc
diff --git a/test/Crypto/Macaroon/Verifier/Tests.hs b/test/Crypto/Macaroon/Verifier/Tests.hs
index 92a8a21..f87f192 100644
--- a/test/Crypto/Macaroon/Verifier/Tests.hs
+++ b/test/Crypto/Macaroon/Verifier/Tests.hs
@@ -15,6 +15,7 @@ module Crypto.Macaroon.Verifier.Tests where
 import qualified Data.ByteString.Char8 as B8
 import Test.Tasty
 import Test.Tasty.HUnit
+import Test.Tasty.QuickCheck
 
 import           Crypto.Macaroon
 import           Crypto.Macaroon.Verifier
@@ -25,6 +26,9 @@ tests :: TestTree
 tests = testGroup "Crypto.Macaroon.Verifier" [ sigs
                                              ]
 
+{-
+ - Test fixtures
+ -}
 sec = B8.pack "this is our super secret key; only we should know it"
 
 m :: Macaroon
@@ -39,21 +43,25 @@ m2 = addFirstPartyCaveat "test = caveat" m
 m3 :: Macaroon
 m3 = addFirstPartyCaveat "test = acaveat" m
 
+{-
+ - Tests
+ -}
 sigs = testGroup "Signatures" [ basic
-                              , minted
+                              , one
+                              , two
                               ]
 
-basic = testCase "Basic Macaroon Signature" $
-    Success @=? verifySig sec m
+basic = testGroup "Basic Macaroon" [ none , sigQC ]
 
+none = testCase "No caveat" $
+    VSuccess @=? verifySig sec m
 
-minted :: TestTree
-minted = testGroup "Macaroon with first party caveats" [ one
-                                                       , two
-                                                       ]
-one = testCase "One caveat" $
-    Success @=? verifySig sec m2
+sigQC = testProperty "Random" $
+    \sm -> verifySig (secret sm) (macaroon sm) == VSuccess
 
-two = testCase "Two caveats" $
-    Success @=? verifySig sec m3
+one = testCase "Macaroon with one caveat" $
+    VSuccess @=? verifySig sec m2
+
+two = testCase "Macaroon with two caveats" $
+    VSuccess @=? verifySig sec m3
 
-- 
cgit v1.2.3