hazelcast-master/hazelcast/src/test/java/com/hazelcast/internal/metrics/jmx/MemberJmxMetricsTest.java
/*
 * Copyright (c) 2008-2023, Hazelcast, Inc. All Rights Reserved.
 *
 * Licensed 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 com.hazelcast.internal.metrics.jmx;

import com.hazelcast.client.test.TestHazelcastFactory;
import com.hazelcast.config.Config;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.test.HazelcastSerialClassRunner;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import static com.hazelcast.test.HazelcastTestSupport.assertTrueEventually;
import static com.hazelcast.test.HazelcastTestSupport.smallInstanceConfig;

@RunWith(HazelcastSerialClassRunner.class)
@Category(QuickTest.class)
public class MemberJmxMetricsTest {
    private static final String DOMAIN_PREFIX = "com.hazelcast";

    private TestHazelcastFactory hazelcastFactory = new TestHazelcastFactory();
    private JmxPublisherTestHelper helper;

    @Before
    public void setUp() throws Exception {
        helper = new JmxPublisherTestHelper(DOMAIN_PREFIX);
    }

    @After
    public void tearDown() {
        hazelcastFactory.terminateAll();
    }

    @Test
    public void testNoMBeanLeak() {
        helper.clearMBeans();

        Config config = smallInstanceConfig();
        config.getMetricsConfig()
              .setCollectionFrequencySeconds(1);

        HazelcastInstance member = hazelcastFactory.newHazelcastInstance(config);
        String expectedObjectName = DOMAIN_PREFIX + ":type=Metrics,instance=" + member.getName() + ",prefix=os";
        assertTrueEventually(() -> helper.assertMBeanContains(expectedObjectName));

        member.shutdown();
        helper.assertNoMBeans();
    }
}
