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https://issues.apache.org/jira/browse/FLINK-5795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15874017#comment-15874017
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ASF GitHub Bot commented on FLINK-5795:
---------------------------------------
Github user wuchong commented on a diff in the pull request:
https://github.com/apache/flink/pull/3330#discussion_r101946735
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/runtime/datastream/DataStreamUserDefinedFunctionITCase.scala
---
@@ -0,0 +1,80 @@
+/*
+ * 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.runtime.datastream
+
+import org.apache.flink.api.scala._
+import org.apache.flink.types.Row
+import org.apache.flink.table.api.scala.stream.utils.StreamITCase
+import org.apache.flink.table.api.scala._
+import org.apache.flink.table.utils.TableFunc3
+import org.apache.flink.streaming.api.scala.{DataStream,
StreamExecutionEnvironment}
+import org.apache.flink.streaming.util.StreamingMultipleProgramsTestBase
+import org.apache.flink.table.api.TableEnvironment
+import org.junit.Assert._
+import org.junit.Test
+
+import scala.collection.mutable
+
+class DataStreamUserDefinedFunctionITCase extends
StreamingMultipleProgramsTestBase {
--- End diff --
IMO, the scalar UDF tests can be put into `UserDefinedScalarFunctionTest`.
Scalar function tests do not need to setup a cluster environment, so an unit
test is enough.
> Improve “UDTF" to support constructor with parameter.
> -----------------------------------------------------
>
> Key: FLINK-5795
> URL: https://issues.apache.org/jira/browse/FLINK-5795
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: sunjincheng
> Assignee: sunjincheng
>
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