* This exception indicates that an external command or process execution encountered an error.
 */
public class CommandExecutionException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructor with error message.
     * @param message The error message describing the command execution failure.
     */
    public CommandExecutionException(final String message) {

 * that don't declare ServletException in their throws clause.
 */
public class ServletRuntimeException extends RuntimeException {

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

    /**
     * Constructs a new ServletRuntimeException wrapping the given ServletException.
     *
     * @param e The ServletException to wrap
     */

 * This exception is used for errors during theme installation, uninstallation, or configuration.
 */
public class ThemeException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new ThemeException with the specified message and cause.
     *
     * @param message the exception message
     * @param cause the underlying cause of this exception

 * This exception is used for errors during thumbnail creation and processing.
 */
public class ThumbnailGenerationException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new ThumbnailGenerationException with the specified message and cause.
     *
     * @param message the exception message

      "path": {
        "type": "keyword"
      },
      "generator": {
        "type": "keyword"
      },
      "target": {
        "type": "keyword"
      },
      "createdTime": {
        "type": "long"
      },
      "createdBy": {
        "type": "keyword"
      }
    }

 * This exception wraps underlying search engine errors and provides
 * meaningful error messages for troubleshooting.
 */
public class SearchEngineClientException extends FessSystemException {

    private static final long serialVersionUID = 1L;

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

        }
    }

    @Test
    public void test_longMessageHandling() {
        // Test handling of long messages
        StringBuilder longMessage = new StringBuilder();
        for (int i = 0; i < 1000; i++) {
            longMessage.append("Long message part ").append(i).append(" ");
        }
        String message = longMessage.toString();

 * This exception indicates that the required container or a specific component within it cannot be accessed.
 */
public class ContainerNotAvailableException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /** The name of the component that is not available. */
    private String componentName;

    /**
     * Constructor with component name.

    }

    private void setupMockConfig(String fesenUrl, String username, String password, String certificateAuthorities) {
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override
            public String getFesenHttpSslCertificateAuthorities() {
                return certificateAuthorities;
            }

            @Override

        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withLongTypeAndMessage() {
        // Test constructor with long strings
        String type = "VeryLongTokenTypeNameForTestingPurposes";
        String message =
                "This is a very long error message that describes in detail why the access token is invalid and what went wrong during validation";