assertEquals(cause, exception.getCause());
        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
    }

    @Test
    public void test_constructorWithMessage() {
        // Test constructor with message only
        String message = "Search query is invalid";

        SearchQueryException exception = new SearchQueryException(message);

import org.codelibs.fess.unit.UnitFessTestCase;
import org.junit.jupiter.api.Test;

public class ThumbnailGenerationExceptionTest extends UnitFessTestCase {

    @Test
    public void test_constructorWithMessage() {
        // Test constructor with message only
        String message = "Thumbnail generation failed";
        ThumbnailGenerationException exception = new ThumbnailGenerationException(message);

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