* the input stream thread for capturing process output.
 */
public class JobProcess {
    /**
     * The underlying system process.
     */
    protected Process process;

    /**
     * The thread that handles reading from the process input stream.
     */
    protected InputStreamThread inputStreamThread;

    /**
     * Constructs a new JobProcess with the specified process.

        Process mockProcess = createMockProcess("test output\nline2");

        JobProcess jobProcess = new JobProcess(mockProcess);

        assertNotNull(jobProcess);
        assertSame(mockProcess, jobProcess.getProcess());
        assertNotNull(jobProcess.getInputStreamThread());
        assertEquals("InputStreamThread", jobProcess.getInputStreamThread().getName());
    }

        Consumer<ProcessBuilder> pbCall = pb -> {
            pb.redirectErrorStream(true);
        };

        try {
            JobProcess jobProcess = processHelper.startProcess(sessionId, cmdList, pbCall);
            assertNotNull(jobProcess);
            assertTrue(processHelper.isProcessRunning());
            assertTrue(processHelper.isProcessRunning(sessionId));

        pbCall.accept(pb);
        destroyProcess(sessionId);
        JobProcess jobProcess;
        try {
            jobProcess = new JobProcess(pb.start(), bufferSize, outputCallback);
            destroyProcess(sessionId, runningProcessMap.putIfAbsent(sessionId, jobProcess));
            return jobProcess;
        } catch (final IOException e) {

            if (logger.isInfoEnabled()) {
                logger.info("Python: \nDirectory={}\nOptions={}", baseDir, cmdList);
            }

            final JobProcess jobProcess = processHelper.startProcess(sessionId, cmdList, pb -> {
                pb.directory(baseDir);
                pb.redirectErrorStream(true);
                final Map<String, String> environment = pb.environment();

            }

            final JobProcess jobProcess = processHelper.startProcess(sessionId, cmdList, pb -> {
                pb.directory(baseDir);
                pb.redirectErrorStream(true);
            });

            final InputStreamThread it = jobProcess.getInputStreamThread();
            it.start();

            final Process currentProcess = jobProcess.getProcess();
            currentProcess.waitFor();

            }

            final JobProcess jobProcess = processHelper.startProcess(sessionId, cmdList, pb -> {
                pb.directory(baseDir);
                pb.redirectErrorStream(true);
            });

            final InputStreamThread it = jobProcess.getInputStreamThread();
            it.start();

            final Process currentProcess = jobProcess.getProcess();
            currentProcess.waitFor();

            }

            final JobProcess jobProcess = processHelper.startProcess(sessionId, cmdList, pb -> {
                pb.directory(baseDir);
                pb.redirectErrorStream(true);
            });

            final InputStreamThread it = jobProcess.getInputStreamThread();
            it.start();

            final Process currentProcess = jobProcess.getProcess();
            currentProcess.waitFor();

import org.codelibs.fess.mylasta.direction.FessConfig;

import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.InputStreamThread;
import org.codelibs.fess.util.JobProcess;

import jakarta.servlet.ServletContext;

public class GenerateThumbnailJobTest extends UnitFessTestCase {

    private GenerateThumbnailJob thumbnailJob;
    private TestProcessHelper testProcessHelper;

        @Override
        public int destroyProcess(String sessionId) {
            // Mock implementation
            return 0;
        }
    }

    // Mock JobProcess implementation
    private class MockJobProcess extends JobProcess {
        private final int exitValue;
        private final String output;

        public MockJobProcess(int exitValue, String output) {