From ead8764499fe3c094b1e60a1b8464e9e008fc260 Mon Sep 17 00:00:00 2001
From: "Juan J. Martinez" <jjm@usebox.net>
Date: Sun, 11 Sep 2022 10:51:22 +0100
Subject: Folding constants in addition

---
 test/Language.hs | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'test')

diff --git a/test/Language.hs b/test/Language.hs
index 83736b2..604b06b 100644
--- a/test/Language.hs
+++ b/test/Language.hs
@@ -9,6 +9,17 @@ import Micro.Parser (parseFromString)
 import Test.HUnit
 import Text.Parsec.Pos (newPos)
 
+assertCompileAst :: String -> [A.Expr] -> Assertion
+assertCompileAst input expected = do
+  r <- return $ parseFromString input
+  case r of
+    Left e -> assertFailure $ show e
+    Right ast -> do
+      res <- return $ compileToAst ast
+      case res of
+        Left e -> assertFailure $ show e
+        Right ast -> assertEqual "" expected ast
+
 assertAst :: String -> [A.Expr] -> Assertion
 assertAst input expected = do
   r <- return $ parseFromString input
@@ -238,6 +249,16 @@ testCase17 =
           A.BinOp A.Assign (newPos "-" 3 5) (A.Variable "a" $ newPos "-" 3 1) (A.Num 10 $ newPos "-" 3 5)
         ]
 
+testCase18 =
+  TestLabel "fold constant addition" $
+    TestCase $
+      assertCompileAst
+        "module main\n\
+        \1 + 2;"
+        [ A.Module "main" $ newPos "-" 1 1,
+          A.Num 3 $ newPos "-" 2 5
+        ]
+
 -- test errors
 
 testCaseE1 =
@@ -402,6 +423,7 @@ language =
     testCase15,
     testCase16,
     testCase17,
+    testCase18,
     -- errors
     testCaseE1,
     testCaseE2,
-- 
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