Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/6716#discussion_r32074637
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/MathFunctionsSuite.scala
---
@@ -23,6 +23,24 @@ import org.apache.spark.sql.types.DoubleType
class MathFunctionsSuite extends SparkFunSuite with ExpressionEvalHelper {
/**
+ * Used for testing leaf math expressions.
+ *
+ * @param e expression
+ * @param c The constants in scala.math
+ * @param domain The set of values to run the function with
+ * @tparam T Generic type for primitives
+ */
+ private def testLeaf[T](
+ e: () => Expression,
+ c: T,
+ domain: Iterable[T] = (-20 to 20).map(_ * 0.1)): Unit = {
--- End diff --
since this is unused, why not just remove it?
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