1 files changed, 37 insertions, 0 deletions
diff --git a/test/LatticeTest.hs b/test/LatticeTest.hs
new file mode 100644
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+++ b/test/LatticeTest.hs
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+module LatticeTest (suite) where
+
+import Test.Tasty
+import Test.Tasty.HUnit
+import Lattice 
+
+suite :: TestTree
+suite = testGroup "lattice tests" $
+  [ latticeGrowth
+  ]
+
+
+data GrowKind = Empty | Plant deriving (Show, Enum, Eq)
+data GrowFlags = None deriving (Show, Eq)
+
+
+latticeGrowth :: TestTree
+latticeGrowth = testCase "growth update rule" $
+  let
+    plant = LatticeCell Plant None
+    empty = LatticeCell Empty None
+    lattice = [[ empty, empty, plant ]]
+    rules =
+      [ 
+        -- empty
+        \l x y -> 
+          if kind ((l !! y) !! (x+1)) == Plant
+          then LatticeCell Plant None
+          else LatticeCell Empty None
+        -- plant
+        , \_ _ _ -> LatticeCell Plant None
+      ] :: [LatticeRule GrowKind GrowFlags]
+    lattice' = updateLattice lattice rules
+    lattice'' = updateLattice lattice' rules
+  in do
+    lattice' @?= [[ empty, plant, plant ]]
+    lattice'' @?= [[ plant, plant, plant ]]