sathiyapk commented on a change in pull request #34729:
URL: https://github.com/apache/spark/pull/34729#discussion_r783136058



##########
File path: 
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/MathExpressionsSuite.scala
##########
@@ -705,6 +818,42 @@ class MathExpressionsSuite extends SparkFunSuite with 
ExpressionEvalHelper {
     checkEvaluation(BRound(-3.5, 0), -4.0)
     checkEvaluation(BRound(-0.35, 1), -0.4)
     checkEvaluation(BRound(-35, -1), -40)
+    checkEvaluation(checkDataTypeAndCast(
+      FloorExpressionBuilder.build(Seq(Literal(2.5), Literal(0)))), 2L)
+    checkEvaluation(checkDataTypeAndCast(
+      FloorExpressionBuilder.build(Seq(Literal(3.5), Literal(0)))), 3L)
+    checkEvaluation(checkDataTypeAndCast(
+      FloorExpressionBuilder.build(Seq(Literal(-2.5), Literal(0)))), -3L)
+    checkEvaluation(checkDataTypeAndCast(
+      FloorExpressionBuilder.build(Seq(Literal(-3.5), Literal(0)))), -4L)
+    checkEvaluation(checkDataTypeAndCast(
+      FloorExpressionBuilder.build(Seq(Literal(-0.35), Literal(1)))), -0.4)
+    checkEvaluation(checkDataTypeAndCast(
+      FloorExpressionBuilder.build(Seq(Literal(-35), Literal(-1)))), -40L)
+    checkEvaluation(checkDataTypeAndCast(
+      CeilExpressionBuilder.build(Seq(Literal(2.5), Literal(0)))), 3L)
+    checkEvaluation(checkDataTypeAndCast(
+      CeilExpressionBuilder.build(Seq(Literal(3.5), Literal(0)))), 4L)
+    checkEvaluation(checkDataTypeAndCast(
+      CeilExpressionBuilder.build(Seq(Literal(-2.5), Literal(0)))), -2L)
+    checkEvaluation(checkDataTypeAndCast(
+      CeilExpressionBuilder.build(Seq(Literal(-3.5), Literal(0)))), -3L)
+    checkEvaluation(checkDataTypeAndCast(
+      CeilExpressionBuilder.build(Seq(Literal(-0.35), Literal(1)))), -0.3)
+    checkEvaluation(checkDataTypeAndCast(
+      CeilExpressionBuilder.build(Seq(Literal(-35), Literal(-1)))), -30L)
+    checkEvaluation(checkDataTypeAndCast(
+      FloorExpressionBuilder.build(Seq(Literal(-0.1), Literal(0)))), -1L)
+    checkEvaluation(checkDataTypeAndCast(
+      FloorExpressionBuilder.build(Seq(Literal(5), Literal(0)))), 5L)
+    checkEvaluation(checkDataTypeAndCast(
+      FloorExpressionBuilder.build(Seq(Literal(3.1411), Literal(-3)))), 0L)
+    checkEvaluation(checkDataTypeAndCast(
+      CeilExpressionBuilder.build(Seq(Literal(-0.1), Literal(0)))), 0L)
+    checkEvaluation(checkDataTypeAndCast(
+      CeilExpressionBuilder.build(Seq(Literal(5), Literal(0)))), 5L)
+    checkEvaluation(checkDataTypeAndCast(
+      CeilExpressionBuilder.build(Seq(Literal(3.1411), Literal(-3)))), 1000L)

Review comment:
       That's a good point. 
   
   you wanted to say `RoundCeil should only accept decimal inputs if the scale 
is` **-ve** ? RoundCeil can accept decimal inputs if the scale is +ve, right ?
   
   And this specific case don't apply to `RoundFloor` right ?




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