HeartSaVioR commented on a change in pull request #35238:
URL: https://github.com/apache/spark/pull/35238#discussion_r787301722



##########
File path: 
external/kafka-0-10-sql/src/test/scala/org/apache/spark/sql/kafka010/KafkaMicroBatchSourceSuite.scala
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@@ -199,9 +199,9 @@ abstract class KafkaMicroBatchSourceSuiteBase extends 
KafkaSourceSuiteBase {
     val topic = newTopic()
     testUtils.createTopic(topic, partitions = 5)
 
-    testUtils.sendMessages(topic, (0 until 15).map(x => {
-      "foo-" + x
-    }).toArray, Some(0))
+    testUtils.sendMessages(topic, (0 until 15).map{ case x =>

Review comment:
       sorry for the nits: space between `p` and `{` / same happens in 
foreachBatch
   
   Not sure style checker will check this, but it is good practice to 
run`dev/scalastyle` before pushing the change. Not all styles are checked with 
style checker unfortunately. 
   
   Please go through https://github.com/databricks/scala-style-guide when you 
have some time.




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