Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3889#discussion_r116541055
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/api/scala/stream/sql/SortTest.scala
---
@@ -0,0 +1,89 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.flink.table.api.scala.stream.sql
+
+import org.apache.flink.api.scala._
+import org.apache.flink.table.api.TableException
+import org.apache.flink.table.api.scala._
+import org.apache.flink.table.utils.TableTestUtil._
+import org.apache.flink.table.utils.{StreamTableTestUtil, TableTestBase}
+import org.junit.Test
+
+class SortTest extends TableTestBase {
+ private val streamUtil: StreamTableTestUtil = streamTestUtil()
+ streamUtil.addTable[(Int, String, Long)]("MyTable", 'a, 'b, 'c,
+ 'proctime.proctime, 'rowtime.rowtime)
+
+ @Test
+ def testSortProcessingTime() = {
+
+ val sqlQuery = "SELECT a FROM MyTable ORDER BY proctime, c"
+
+ val expected =
+ unaryNode(
+ "DataStreamCalc",
+ unaryNode("DataStreamSort",
+ streamTableNode(0),
+ term("orderBy", "proctime ASC, c ASC], offset=[null],
fetch=[unlimited")),
+ term("select", "a", "TIME_MATERIALIZATION(proctime) AS proctime",
"c"))
+
+ streamUtil.verifySql(sqlQuery, expected)
+ }
+
+
+ @Test
+ def testSortRowTime() = {
+
+ val sqlQuery = "SELECT a FROM MyTable ORDER BY rowtime, c"
+
+ val expected =
+ unaryNode(
+ "DataStreamCalc",
+ unaryNode("DataStreamSort",
+ streamTableNode(0),
+ term("orderBy", "rowtime ASC, c ASC], offset=[null],
fetch=[unlimited")),
+ term("select", "a", "TIME_MATERIALIZATION(rowtime) AS rowtime",
"c"))
+
+ streamUtil.verifySql(sqlQuery, expected)
+ }
+
+ @Test
+ def testSortProcessingTimeDesc() = {
+
+ val sqlQuery = "SELECT a FROM MyTable ORDER BY proctime DESC, c"
+ //fail if no error is thrown
+ try{
+ streamUtil.verifySql(sqlQuery, "")
+ } catch {
+ case rt : Throwable => assert(true)
+ }
+ }
+
+ @Test
+ def testSortProcessingTimeSecondaryField() = {
+
+ val sqlQuery = "SELECT a FROM MyTable ORDER BY c, proctime"
--- End diff --
Please add a comment why the tests are expected to fail
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