andygrove commented on code in PR #307:
URL: https://github.com/apache/datafusion-comet/pull/307#discussion_r1576823136


##########
spark/src/test/scala/org/apache/comet/CometCastSuite.scala:
##########
@@ -66,19 +66,22 @@ class CometCastSuite extends CometTestBase with 
AdaptiveSparkPlanHelper {
     castTest(testValues, DataTypes.BooleanType)
   }
 
-  ignore("cast string to byte") {
-    castTest(generateStrings(numericPattern, 8).toDF("a"), DataTypes.ByteType)
+  test("cast string to byte") {
+    val testValues =
+      Seq("", ".", "0", "-0", "+1", "-1", ".2", "-.2", "1e1", "127", "128", 
"-128", "-129") ++
+        generateStrings(numericPattern, 8)
+    castTest(testValues.toDF("a"), DataTypes.ByteType)
   }
 
-  ignore("cast string to short") {
+  test("cast string to short") {

Review Comment:
   The fuzz testing does generate many invalid inputs. I can add some more 
explicit ones to these tests, though.
   
   `cast(".")` will yield different results depending on the eval mode:
   
   - `LEGACY` -> `0`
   - `TRY` -> null
   - `ANSI` -> error



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