Github user sunjincheng121 commented on a diff in the pull request:
https://github.com/apache/flink/pull/4200#discussion_r124439791
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/runtime/datastream/DataStreamUserDefinedFunctionITCase.scala
---
@@ -230,6 +231,26 @@ class DataStreamUserDefinedFunctionITCase extends
StreamingMultipleProgramsTestB
assertEquals(expected.sorted, StreamITCase.testResults.sorted)
}
+
+ @Test
+ def testScalarFunctionDeterministic(): Unit = {
--- End diff --
Yes, agree with @wuchong , Add a test in `ExpressionReductionTest` is
correct. and I think it's better to add a exception test case.
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