diff options
Diffstat (limited to 'tests/Properties.hs')
| -rw-r--r-- | tests/Properties.hs | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/tests/Properties.hs b/tests/Properties.hs index 3b57dff..1240734 100644 --- a/tests/Properties.hs +++ b/tests/Properties.hs @@ -66,8 +66,9 @@ instance (Integral i, Integral j, Ord a, Arbitrary a) => Arbitrary (StackSet i j -- -- All operations must preserve this. -- -invariant (w :: T) = inBounds w && noDuplicates (concat $ M.elems (stacks w)) +invariant (w :: T) = inBounds w && noDuplicates allWindows where + allWindows = concatMap (uncurry (++)) . M.elems . stacks $ w noDuplicates ws = nub ws == ws inBounds x = current x >= 0 && current x < sz where sz = M.size (stacks x) @@ -76,7 +77,7 @@ prop_invariant = invariant -- empty StackSets have no windows in them -prop_empty n m = n > 0 && m > 0 ==> all null (M.elems (stacks x)) +prop_empty n m = n > 0 && m > 0 ==> all (null . uncurry (++)) (M.elems (stacks x)) where x = empty n m :: T -- empty StackSets always have focus on workspace 0 |