[GitHub] mccheah commented on a change in pull request #23220: [SPARK-25877][k8s] Move all feature logic to feature classes.

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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_r240454417
 
 

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 File path: resource-managers/kubernetes/core/src/test/scala/org/apache/spark/deploy/k8s/PodBuilderSuite.scala
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+/*
+ * 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 = {
+    val metadata = pod.pod.getMetadata
+    assert(metadata.getLabels.containsKey("test-label-key"))
+    assert(metadata.getAnnotations.containsKey("test-annotation-key"))
+    assert(metadata.getNamespace === "namespace")
+    assert(metadata.getOwnerReferences.asScala.exists(_.getName == "owner-reference"))
+    val spec = pod.pod.getSpec
+    assert(!spec.getContainers.asScala.exists(_.getName == "executor-container"))
 
 Review comment:
   Nit: Use `.asScala.map(_.getName).contains("executor-container")`. Similar changes come up throughout this test.

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