cloud-fan commented on code in PR #52537:
URL: https://github.com/apache/spark/pull/52537#discussion_r2415261898
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sql/connect/client/jvm/src/test/scala/org/apache/spark/sql/connect/ColumnTestSuite.scala:
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@@ -209,4 +209,30 @@ class ColumnTestSuite extends ConnectFunSuite {
testColName(structType1, _.struct(structType1))
import org.apache.spark.util.ArrayImplicits._
testColName(structType2, _.struct(structType2.fields.toImmutableArraySeq:
_*))
+
+ test("transform with named function") {
+ val a = fn.col("a")
+ def addOne(c: Column): Column = c + 1
+ val transformed = a.transform(addOne)
+ assert(transformed == (a + 1))
+ }
+
+ test("transform with lambda") {
Review Comment:
can we also test with an existing function in
`org.apache.spark.sql.functions`?
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