MemoryLeakingResourceITCase.java

/*
 * Copyright (c) 2015, 2022 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package org.glassfish.jersey.tests.memleaks.testleak;

import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.Application;
import javax.ws.rs.core.Response;

import org.glassfish.jersey.test.memleak.common.AbstractMemoryLeakWebAppTest;
import org.glassfish.jersey.test.memleak.common.MemoryLeakSucceedingTimeout;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.InvocationInterceptor;
import org.junit.jupiter.api.extension.RegisterExtension;

import static org.junit.jupiter.api.Assertions.fail;

/**
 * Performs the test of a memory leaking RESTful resource.
 * <p/>
 * This test class should be used to test the memory leaking test infrastructure.
 */
public class MemoryLeakingResourceITCase extends AbstractMemoryLeakWebAppTest {

    @RegisterExtension
    public InvocationInterceptor globalTimeout = new MemoryLeakSucceedingTimeout(100_000);

    @Override
    protected Application configure() {
        return new TestApplication();
    }

    /**
     * This test runs i single request; as such, it may or may not cause a memory leak (and end with a failure).
     */
    @Test
    public void testTheLeak() {

        final WebTarget webTarget = target("invoke").queryParam("size", 1024 * 1024);
        System.out.println(webTarget.getUri());
        final Response response = webTarget.request().post(null);
        Assertions.assertEquals(200, response.getStatus());
    }

    /**
     * This test should fail after certain period of time (depending on the JVM settings too).
     */
    @Test
    public void testTheLeakEndless() {

        while (true) {
            System.out.print(".");
            final Response response = target("invoke").queryParam("size", 1024 * 1024).request().post(null);

            if (response.getStatus() != 200) {
                fail("The server was unable to fulfill the request! This may indicate that OutOfMemory exception occurred.");
            }
        }
    }

}