2 files changed, 21 insertions, 0 deletions
diff --git a/users/grfn/xanthous/test/Spec.hs b/users/grfn/xanthous/test/Spec.hs
index f15c393ac917..36bac640b18e 100644
--- a/users/grfn/xanthous/test/Spec.hs
+++ b/users/grfn/xanthous/test/Spec.hs
@@ -6,6 +6,7 @@ import qualified Xanthous.Data.EntityCharSpec
 import qualified Xanthous.Data.EntityMap.GraphicsSpec
 import qualified Xanthous.Data.EntityMapSpec
 import qualified Xanthous.Data.LevelsSpec
+import qualified Xanthous.Data.MemoSpec
 import qualified Xanthous.Data.NestedMapSpec
 import qualified Xanthous.DataSpec
 import qualified Xanthous.Entities.RawsSpec
@@ -30,6 +31,7 @@ test = testGroup "Xanthous"
   , Xanthous.Data.EntityMap.GraphicsSpec.test
   , Xanthous.Data.EntityMapSpec.test
   , Xanthous.Data.LevelsSpec.test
+  , Xanthous.Data.MemoSpec.test
   , Xanthous.Data.NestedMapSpec.test
   , Xanthous.DataSpec.test
   , Xanthous.Entities.RawsSpec.test
diff --git a/users/grfn/xanthous/test/Xanthous/Data/MemoSpec.hs b/users/grfn/xanthous/test/Xanthous/Data/MemoSpec.hs
new file mode 100644
index 000000000000..ad81f1984d8f
--- /dev/null
+++ b/users/grfn/xanthous/test/Xanthous/Data/MemoSpec.hs
@@ -0,0 +1,19 @@
+--------------------------------------------------------------------------------
+module Xanthous.Data.MemoSpec (main, test) where
+--------------------------------------------------------------------------------
+import Test.Prelude
+import Test.QuickCheck.Instances.Text ()
+--------------------------------------------------------------------------------
+import Xanthous.Data.Memo
+--------------------------------------------------------------------------------
+
+main :: IO ()
+main = defaultMain test
+
+test :: TestTree
+test = testGroup "Xanthous.Data.MemoSpec"
+  [ testGroup "getMemoized"
+    [ testProperty "when key matches" $ \k v ->
+        getMemoized @Int @Int k (memoizeWith k v) === Just v
+    ]
+  ]