Add a test for reevaluation

Author: pepeiborra

test/functional/Eval.hs

@@ -49,7 +49,8 @@ tests =
       testCase "Evaluation of expressions" $ goldenTest "T1.hs",
       testCase "Reevaluation of expressions" $ goldenTest "T2.hs",
       testCase "Evaluation of expressions w/ imports" $ goldenTest "T3.hs",
-      testCase "Evaluation of expressions w/ lets" $ goldenTest "T4.hs"
+      testCase "Refresh an evaluation" $ goldenTest "T5.hs"
+      testCase "Evaluation of expressions w/ lets" $ goldenTest "T4.hs",
     ]
 
 goldenTest :: FilePath -> IO ()

test/testdata/eval/T5.hs

@@ -0,0 +1,6 @@
+module T5 where
+
+-- >>> unwords example
+-- "This is a stale example of evaluation"
+example :: [String]
+example = ["This","is","an","example","of","evaluation"]

test/testdata/eval/T5.hs.expected

@@ -0,0 +1,6 @@
+module T5 where
+
+-- >>> unwords example
+-- "This is an example of evaluation"
+example :: [String]
+example = ["This","is","an","example","of","evaluation"]