1 files changed, 8 insertions, 1 deletions

diff --git a/tests/Network/BitTorrent/Exchange/BlockSpec.hs b/tests/Network/BitTorrent/Exchange/BlockSpec.hs
index 158a30b4..f4301452 100644
--- a/tests/Network/BitTorrent/Exchange/BlockSpec.hs
+++ b/tests/Network/BitTorrent/Exchange/BlockSpec.hs
@@ -1,5 +1,6 @@
 module Network.BitTorrent.Exchange.BlockSpec (spec) where
 import Control.Applicative
+import Data.Maybe
 import Test.Hspec
 import Test.QuickCheck
 
@@ -12,8 +13,14 @@ instance Arbitrary a => Arbitrary (Block a) where
 instance Arbitrary BlockIx where
   arbitrary = BlockIx <$> arbitrary <*> arbitrary <*> arbitrary
 
+instance Arbitrary Bucket where
+  arbitrary = error "arbitrary: block bucket"
+
+instance Show Bucket where
+  show = error "show: bucket"
+
 spec :: Spec
 spec = do
   describe "bucket" $ do
     it "render to piece when it is full" $ property $ \ bkt ->
-      if full bkt then isJust (toPiece bkt)
\ No newline at end of file
+      full bkt == isJust (toPiece bkt)
\ No newline at end of file