More tests

1 files changed, 20 insertions, 0 deletions

diff --git a/test/TypecheckTest.hs b/test/TypecheckTest.hs
index b08574a..299c8c0 100644
--- a/test/TypecheckTest.hs
+++ b/test/TypecheckTest.hs
@@ -12,3 +12,23 @@ typecheckTest = describe "inferExpr" $ do
     inferExpr (Var "a") [("a", TPtr TInt)] `shouldBe` ( Just $ TPtr TInt )
   it "shouldn't infer undefined variables" $ do
     inferExpr (Var "a") [] `shouldBe` Nothing
+  it "should be able to infer types of arithmetic expressions" $ do
+    inferExpr (IntLit 5) [] `shouldBe` (Just TInt)
+    inferExpr (Add (IntLit 1) (IntLit 3)) [] `shouldBe` (Just TInt)
+    inferExpr (Mult (IntLit 1) (IntLit 3)) [] `shouldBe` (Just TInt)
+    inferExpr (Neg (IntLit 3)) [] `shouldBe` (Just TInt)
+  it "shouldn't be able to do arithmetic operations on pointer" $ do
+    inferExpr (Add (IntLit 1) (Var "a")) [("a",(TPtr TInt))] `shouldBe` Nothing
+    inferExpr (Add (Var "a") (IntLit 1)) [("a",(TPtr TInt))] `shouldBe` Nothing
+    inferExpr (Mult (IntLit 1) (Var "a")) [("a",(TPtr TInt))] `shouldBe` Nothing
+    inferExpr (Mult (Var "a") (IntLit 1)) [("a",(TPtr TInt))] `shouldBe` Nothing
+    inferExpr (Neg (Var "a")) [("a",(TPtr TInt))] `shouldBe` Nothing
+  it "should infer compound types" $ do
+    inferExpr (Variant (TVariant [("Cons",TInt),("Cons2",TPtr TInt)]) "Cons" (IntLit 5)) [] `shouldBe` (Just $ TVariant [("Cons",TInt),("Cons2",TPtr TInt)])
+    inferExpr (Record [("aa",Var "a"),("bb",Var "b")]) [("a",TInt), ("b",TPtr TInt)] `shouldBe` (Just $ TRecord [("aa",TInt),("bb",TPtr TInt)])
+  it "should unpack Ptr for every dereference" $ do
+    inferExpr (Deref (Var "a")) [("a",TPtr TInt)] `shouldBe` (Just TInt)
+    inferExpr (Deref (Var "a")) [("a",TPtr $ TPtr TInt)] `shouldBe` (Just $ TPtr TInt)
+
+
+