Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3714#discussion_r112226659
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/api/scala/stream/sql/WindowAggregateTest.scala
---
@@ -29,6 +29,27 @@ class WindowAggregateTest extends TableTestBase {
private val streamUtil: StreamTableTestUtil = streamTestUtil()
streamUtil.addTable[(Int, String, Long)]("MyTable", 'a, 'b, 'c)
+
+
+ @Test
+ def testSortProcessingTime() = {
--- End diff --
I would add these tests to a new class `SortTest`. Please add also tests
that check that unsupported operations (desc time sort, time field not primary
sort field, etc.) throw an exception.
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