src/test/java/org/apache/commons/exec/issues/Exec44Test.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
 *
 *   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
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 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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 */

package org.apache.commons.exec.issues;

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.io.File;

import org.apache.commons.exec.CommandLine;
import org.apache.commons.exec.DefaultExecuteResultHandler;
import org.apache.commons.exec.DefaultExecutor;
import org.apache.commons.exec.ExecuteWatchdog;
import org.apache.commons.exec.Executor;
import org.apache.commons.exec.TestUtil;
import org.junit.jupiter.api.Test;

/**
 * Test EXEC-44 (https://issues.apache.org/jira/browse/EXEC-44).
 */
class Exec44Test {

    private final Executor exec = DefaultExecutor.builder().get();
    private final File testDir = new File("src/test/scripts");
    private final File foreverTestScript = TestUtil.resolveScriptFileForOS(testDir + "/forever");

    /**
     *
     * Because the ExecuteWatchdog is the only way to destroy asynchronous processes, it should be possible to set it to an infinite timeout, for processes
     * which should not time out, but manually destroyed under some circumstances.
     *
     * @throws Exception the test failed
     */
    @Test
    void testExec44() throws Exception {

        final CommandLine cl = new CommandLine(foreverTestScript);
        final DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();
        final ExecuteWatchdog watchdog = new ExecuteWatchdog(ExecuteWatchdog.INFINITE_TIMEOUT);

        exec.setWatchdog(watchdog);
        exec.execute(cl, resultHandler);

        // wait for script to run
        Thread.sleep(5000);
        assertTrue(watchdog.isWatching(), "The watchdog is watching the process");

        // terminate it
        watchdog.destroyProcess();
        assertTrue(watchdog.killedProcess(), "The watchdog has killed the process");
        assertFalse(watchdog.isWatching(), "The watchdog is no longer watching any process");
    }
}