DefaultThreadFactoryTest.java — netty Source File

Source Code

/*
 * Copyright 2016 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.util.concurrent;

import org.junit.jupiter.api.Assumptions;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.Timeout;

import java.security.Permission;
import java.util.concurrent.Callable;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;

public class DefaultThreadFactoryTest {

    @Test
    @Timeout(value = 2000, unit = TimeUnit.MILLISECONDS)
    public void testDescendantThreadGroups() throws InterruptedException {
        final SecurityManager current = System.getSecurityManager();

        boolean securityManagerSet = false;
        try {
            try {
                // install security manager that only allows parent thread groups to mess with descendant thread groups
                System.setSecurityManager(new SecurityManager() {
                    @Override
                    public void checkAccess(ThreadGroup g) {
                        final ThreadGroup source = Thread.currentThread().getThreadGroup();

                        if (source != null) {
                            if (!source.parentOf(g)) {
                                throw new SecurityException("source group is not an ancestor of the target group");
                            }
                            super.checkAccess(g);
                        }
                    }

                    // so we can restore the security manager at the end of the test
                    @Override
                    public void checkPermission(Permission perm) {
                    }
                });
// ... (238 more lines)