cloud-fan commented on code in PR #40466:
URL: https://github.com/apache/spark/pull/40466#discussion_r1141966325
##########
sql/core/src/test/scala/org/apache/spark/sql/ColumnExpressionSuite.scala:
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@@ -921,6 +922,132 @@ class ColumnExpressionSuite extends QueryTest with
SharedSparkSession {
}
}
+ private def captureStdOut(block: => Unit): String = {
+ val capturedOut = new ByteArrayOutputStream()
+ Console.withOut(capturedOut)(block)
+ capturedOut.toString()
+ }
+
+ test("explain") {
Review Comment:
shall we use golden file tests? We don't expect it to be stable but we
should be aware if it gets changed.
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