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authorGriffin Smith <root@gws.fyi>2019-11-29T19·33-0500
committerGriffin Smith <root@gws.fyi>2019-11-29T19·33-0500
commitf37d0f75c0b4a77c8e35192c24c6fdb6f2bc4619 (patch)
tree0af3e636f1a2dcb0a0e179895e4a41f2fab45f69 /test/Xanthous/Data/EntityMapSpec.hs
parent2f2e5a0b684f886a7585161d30e8cda962c7eefb (diff)
Implement saving+loading the game
Implement ToJSON and FromJSON for all of the various pieces of the game
state, and add a pair of functions saveGame/loadGame implementing a
prism to save the game as zlib-compressed JSON. To test this, there's
now Arbitrary, CoArbitrary, and Function instances for all the parts of
the game state - to get around circular imports with the concrete
entities this unfortunately is happening via orphan instances, plus an
hs-boot file to break a circular import that was just a little too hard
to remove by moving things around. Ugh.
Diffstat (limited to 'test/Xanthous/Data/EntityMapSpec.hs')
-rw-r--r--test/Xanthous/Data/EntityMapSpec.hs11
1 files changed, 9 insertions, 2 deletions
diff --git a/test/Xanthous/Data/EntityMapSpec.hs b/test/Xanthous/Data/EntityMapSpec.hs
index 2e9714a44eb7..53f03020f346 100644
--- a/test/Xanthous/Data/EntityMapSpec.hs
+++ b/test/Xanthous/Data/EntityMapSpec.hs
@@ -2,9 +2,11 @@
 --------------------------------------------------------------------------------
 module Xanthous.Data.EntityMapSpec where
 --------------------------------------------------------------------------------
-import Test.Prelude
+import           Test.Prelude
 --------------------------------------------------------------------------------
-import Xanthous.Data.EntityMap
+import qualified Data.Aeson as JSON
+--------------------------------------------------------------------------------
+import           Xanthous.Data.EntityMap
 --------------------------------------------------------------------------------
 
 main :: IO ()
@@ -30,4 +32,9 @@ test = localOption (QuickCheckTests 20)
         then (em₁ == em₃)
         else True
     ]
+  , testGroup "JSON encoding/decoding"
+    [ testProperty "Preserves IDs" $ \(em :: EntityMap Int) ->
+        let Just em' = JSON.decode $ JSON.encode em
+        in toEIDsAndPositioned em' === toEIDsAndPositioned em
+    ]
   ]