fail("Should throw JobProcessingException");
        } catch (JobProcessingException e) {
            assertTrue(e.getMessage().contains("Failed to execute a crawl job"));
            assertNotNull(e.getCause());
            assertEquals("Test exception", e.getCause().getMessage());
        }
    }

    // Test execute with JobProcessingException in executeCrawler

        final JobProcessingException exception = new JobProcessingException(message);

        assertNotNull(exception);
        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());
    }

    public void test_constructor_withNullCause() {
        // Test constructor with null cause
        final JobProcessingException exception = new JobProcessingException((Throwable) null);

    public void test_executePython_blankFilename() {
        pythonJob.filename("");

        try {
            pythonJob.executePython();
            fail("Should throw JobProcessingException");
        } catch (JobProcessingException e) {
            assertEquals("Python script is not specified.", e.getMessage());
        }
    }

    // Test executePython with null filename

            purgeExpiry = expiry;
            if (throwException) {
                if (exceptionMessage != null) {
                    throw new JobProcessingException(new RuntimeException(exceptionMessage));
                }
                throw new JobProcessingException(new RuntimeException("Test exception"));
            }
            return purgeCallCount;
        }

        public void setPurgeCallCount(long count) {

        testProcessHelper.processOutput = "Generation failed";

        try {
            thumbnailJob.executeThumbnailGenerator();
            fail("Should throw JobProcessingException");
        } catch (JobProcessingException e) {
            assertTrue(e.getMessage().contains("Thumbnail Process terminated."));
        } catch (NullPointerException e) {
            // May occur if ServletContext is not fully initialized

import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import org.codelibs.core.io.FileUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.exception.JobProcessingException;
import org.codelibs.fess.helper.PopularWordHelper;
import org.codelibs.fess.helper.ProcessHelper;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;

import org.codelibs.core.lang.ThreadUtil;
import org.codelibs.core.misc.Tuple3;
import org.codelibs.fess.Constants;
import org.codelibs.fess.exception.FessSystemException;
import org.codelibs.fess.exception.JobProcessingException;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.client.SearchEngineClient;