modules/core/src/test/java/org/apache/ignite/internal/LongJVMPauseDetectorTest.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.ignite.internal;

import org.apache.ignite.configuration.IgniteConfiguration;
import org.apache.ignite.testframework.GridStringLogger;
import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
import org.junit.Test;

/**
 * Tests if LongJVMPauseDetector starts properly.
 */
public class LongJVMPauseDetectorTest extends GridCommonAbstractTest {
    /** */
    private GridStringLogger strLog;

    /** {@inheritDoc} */
    @Override protected IgniteConfiguration getConfiguration(String gridName) throws Exception {
        IgniteConfiguration cfg = super.getConfiguration(gridName);

        if (strLog != null)
            cfg.setGridLogger(strLog);

        return cfg;
    }

    /** {@inheritDoc} */
    @Override protected void afterTest() throws Exception {
        stopAllGrids();
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testJulMessage() throws Exception {
        this.strLog = new GridStringLogger(true);

        strLog.logLength(300000);

        startGrid(0);

        assertTrue(strLog.toString().contains("LongJVMPauseDetector was successfully started"));
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testStopWorkerThread() throws Exception {
        strLog = new GridStringLogger(true);

        strLog.logLength(300_000);

        startGrid(0);

        stopGrid(0);

        String log = strLog.toString();

        assertFalse(log.contains("jvm-pause-detector-worker has been interrupted."));
        assertTrue(log.contains("jvm-pause-detector-worker has been stopped."));
    }
}