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8 changes: 7 additions & 1 deletion mono-traversable/test/Main.hs
Original file line number Diff line number Diff line change
Expand Up @@ -357,7 +357,13 @@ main = hspec $ do
test "List" ([5 :: Int])

describe "Containers" $ do
let test typ dummy xlookup xinsert xdelete = describe typ $ do
let test :: (IsMap a, Eq a, Show a, MapValue a ~ Int, ContainerKey a ~ Int)
=> String -> a
-> (ContainerKey a -> a -> Maybe (MapValue a)) -- ^ lookup
-> (ContainerKey a -> MapValue a -> a -> a) -- ^ insert
-> (ContainerKey a -> a -> a) -- ^ delete
-> Spec
test typ dummy xlookup xinsert xdelete = describe typ $ do
prop "difference" $ \(DuplPairs xs) (DuplPairs ys) ->
let m1 = mapFromList xs `difference` mapFromList ys
m2 = mapFromListAs (xs `difference` ys) dummy
Expand Down