}

    @Test
    public void test_instanceOfFessSystemException() {
        // Test that PluginException is an instance of FessSystemException
        PluginException exception = new PluginException("Test message");

        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);

        UnsupportedSearchException exception = new UnsupportedSearchException("test");

        assertTrue(exception instanceof UnsupportedSearchException);
        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    @Test

 * This exception is typically thrown during authentication or user lookup operations
 * when the specified user does not exist in the system.
 */
public class FessUserNotFoundException extends FessSystemException {

    /** Serial version UID for serialization compatibility */
    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new FessUserNotFoundException with the specified username.

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.exception;

/**
 * An exception thrown when an LDAP operation fails.
 */
public class LdapOperationException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new LDAP operation exception with the specified detail message and cause.
     *
     * @param message The detail message.

 * It can be used to wrap underlying storage exceptions, providing a
 * consistent error handling mechanism for storage operations.
 */
public class StorageException extends FessSystemException {
    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new storage exception with the specified detail message and cause.
     *
     * @param message The detail message.

    }

    @Test
    public void test_inheritance() {
        // Test that JobProcessingException is a FessSystemException
        final JobProcessingException exception = new JobProcessingException("Test");

        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);

/**
 * Exception thrown when web API operations encounter errors.
 * This exception includes an HTTP status code to indicate the nature of the error.
 */
public class WebApiException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * The HTTP status code associated with this exception.
     */
    private final int statusCode;

    /**

        assertNotNull(queryParseException);
        assertEquals(parseException, queryParseException.getCause());
        assertTrue(queryParseException instanceof FessSystemException);
        assertTrue(queryParseException instanceof RuntimeException);
    }

    @Test
    public void test_getMessage() {
        // Test that message is inherited from the cause

 * This is a system-level exception that indicates problems with data store
 * configuration, connectivity, or data processing.
 */
public class DataStoreException extends FessSystemException {
    private static final long serialVersionUID = 1L;

    /**
     * Creates a new DataStoreException with the specified message and cause.
     *
     * @param message the error message

    }

    @Test
    public void test_exceptionInheritance() {
        // Test that JobNotFoundException properly extends FessSystemException
        JobNotFoundException exception = new JobNotFoundException("test");

        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);