mccheah commented on a change in pull request #23220: [SPARK-25877][k8s] Move all feature logic to feature classes. URL: https://github.com/apache/spark/pull/23220#discussion_r240454863
########## File path: resource-managers/kubernetes/core/src/test/scala/org/apache/spark/deploy/k8s/PodBuilderSuite.scala ########## @@ -0,0 +1,177 @@ +/* + * 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.k8s + +import java.io.File + +import io.fabric8.kubernetes.api.model.{Config => _, _} +import io.fabric8.kubernetes.client.KubernetesClient +import io.fabric8.kubernetes.client.dsl.{MixedOperation, PodResource} +import org.mockito.Matchers.any +import org.mockito.Mockito.{mock, never, verify, when} +import scala.collection.JavaConverters._ + +import org.apache.spark.{SparkConf, SparkException, SparkFunSuite} +import org.apache.spark.deploy.k8s._ +import org.apache.spark.internal.config.ConfigEntry + +abstract class PodBuilderSuite extends SparkFunSuite { + + protected def templateFileConf: ConfigEntry[_] + + protected def buildPod(sparkConf: SparkConf, client: KubernetesClient): SparkPod + + private val baseConf = new SparkConf(false) + .set(Config.CONTAINER_IMAGE, "spark-executor:latest") + + test("use empty initial pod if template is not specified") { + val client = mock(classOf[KubernetesClient]) + buildPod(baseConf.clone(), client) + verify(client, never()).pods() + } + + test("load pod template if specified") { + val client = mockKubernetesClient() + val sparkConf = baseConf.clone().set(templateFileConf.key, "template-file.yaml") + val pod = buildPod(sparkConf, client) + verifyPod(pod) + } + + test("complain about misconfigured pod template") { + val client = mockKubernetesClient( + new PodBuilder() + .withNewMetadata() + .addToLabels("test-label-key", "test-label-value") + .endMetadata() + .build()) + val sparkConf = baseConf.clone().set(templateFileConf.key, "template-file.yaml") + val exception = intercept[SparkException] { + buildPod(sparkConf, client) + } + assert(exception.getMessage.contains("Could not load pod from template file.")) + } + + private def mockKubernetesClient(pod: Pod = podWithSupportedFeatures()): KubernetesClient = { + val kubernetesClient = mock(classOf[KubernetesClient]) + val pods = + mock(classOf[MixedOperation[Pod, PodList, DoneablePod, PodResource[Pod, DoneablePod]]]) + val podResource = mock(classOf[PodResource[Pod, DoneablePod]]) + when(kubernetesClient.pods()).thenReturn(pods) + when(pods.load(any(classOf[File]))).thenReturn(podResource) + when(podResource.get()).thenReturn(pod) + kubernetesClient + } + + private def verifyPod(pod: SparkPod): Unit = { Review comment: The number of things this test checks is remarkable, and it is very much possible to accidentally omit checking the application of a specific feature when a new one is added for either the driver or executor. This is why we had the overridable feature steps in the original incarnation of these tests. Not mocking the substeps leads us to need to check that some specific aspect of each step has been applied. Can we go back to mocking the different steps so that this test can be more easily modified when we add more features? Or else can we abstract away the idea that these steps are applied without this test itself needing to know what the step itself actually does? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
