flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/slot/TaskSlotTest.java

/*
 * 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.flink.runtime.taskexecutor.slot;

import org.apache.flink.api.common.JobID;
import org.apache.flink.runtime.clusterframework.types.AllocationID;
import org.apache.flink.runtime.clusterframework.types.ResourceProfile;
import org.apache.flink.runtime.executiongraph.ExecutionAttemptID;
import org.apache.flink.runtime.memory.MemoryManager;
import org.apache.flink.util.TestLogger;
import org.junit.Test;

import java.util.concurrent.CompletableFuture;

import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

public class TaskSlotTest extends TestLogger {
	private static final JobID JOB_ID = new JobID();
	private static final AllocationID ALLOCATION_ID = new AllocationID();

	@Test
	public void testTaskSlotClosedOnlyWhenAddedTasksTerminated() throws Exception {
		try (TaskSlot<TaskSlotPayload> taskSlot = createTaskSlot()) {
			taskSlot.markActive();
			TestingTaskSlotPayload task = new TestingTaskSlotPayload(JOB_ID, new ExecutionAttemptID(), ALLOCATION_ID);
			taskSlot.add(task);

			CompletableFuture<Void> closingFuture = taskSlot.closeAsync();
			task.waitForFailure();
			MemoryManager memoryManager = taskSlot.getMemoryManager();

			assertThat(closingFuture.isDone(), is(false));
			assertThat(memoryManager.isShutdown(), is(false));
			task.terminate();
			closingFuture.get();
			assertThat(memoryManager.isShutdown(), is(true));
		}
	}

	private static <T extends TaskSlotPayload> TaskSlot<T> createTaskSlot() {
		return new TaskSlot<>(0, ResourceProfile.ZERO, MemoryManager.MIN_PAGE_SIZE, JOB_ID, ALLOCATION_ID);
	}
}