Github user vanzin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/19954#discussion_r158168278
  
    --- Diff: 
resource-managers/kubernetes/core/src/test/scala/org/apache/spark/deploy/rest/k8s/SparkPodInitContainerSuite.scala
 ---
    @@ -0,0 +1,91 @@
    +/*
    + * 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.deploy.rest.k8s
    +
    +import java.io.File
    +import java.util.UUID
    +
    +import com.google.common.base.Charsets
    +import com.google.common.io.Files
    +import org.mockito.Mockito
    +import org.scalatest.BeforeAndAfter
    +import org.scalatest.mockito.MockitoSugar._
    +
    +import org.apache.spark.{SparkConf, SparkFunSuite}
    +import org.apache.spark.deploy.k8s.Config._
    +import org.apache.spark.util.Utils
    +
    +class SparkPodInitContainerSuite
    +  extends SparkFunSuite with BeforeAndAfter {
    +
    +  import SparkPodInitContainerSuite.createTempFile
    --- End diff --
    
    Is this only used in this class? If so you don't need the object, right? 
Just a private method would be enough.


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