Github user dongjoon-hyun commented on a diff in the pull request:

    https://github.com/apache/spark/pull/20493#discussion_r165819565
  
    --- Diff: 
core/src/test/scala/org/apache/spark/status/AppStatusUtilsSuite.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.spark.status
    +
    +import java.util.Date
    +
    +import org.apache.spark.SparkFunSuite
    +import org.apache.spark.status.api.v1.{TaskData, TaskMetrics}
    +
    +class AppStatusUtilsSuite extends SparkFunSuite {
    +
    +  test("schedulerDelay") {
    +    val runningTask = new TaskData(
    --- End diff --
    
    Can we make this test case more concise and easy to read by deduplication?
    For the purpose of this test case, what about the following pattern?
    ```
    Seq(("RUNNING", 0), ("SUCCESS", 3L)).foreach { case (status, 
schedulerDelay) =>
     // the code from `finishedTask`
    }
    ```


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