* @param done true if this is the final chunk
     */
    void onChunk(String chunk, boolean done);

    /**
     * Called when an error occurs during streaming.
     *
     * @param error the error that occurred
     */
    default void onError(final Throwable error) {
        // Default implementation does nothing
    }

    @Test
    public void test_constructorWithMessageAndCause() {
        final RuntimeException cause = new RuntimeException("Root cause");
        final LlmException exception = new LlmException("Error occurred", cause);
        assertEquals("Error occurred", exception.getMessage());
        assertSame(cause, exception.getCause());
    }

    @Test
    public void test_extendsFromFessSystemException() {

public class DictionaryExceptionTest extends UnitFessTestCase {

    @Test
    public void test_constructor_withMessage() {
        // Test constructor with message only
        String message = "Dictionary error occurred";
        DictionaryException exception = new DictionaryException(message);

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

            thread.start();
        }

        // Wait for all threads to complete
        for (Thread thread : threads) {
            thread.join();
        }

        // Verify no exceptions occurred
        for (int i = 0; i < threadCount; i++) {
            assertNull(exceptions[i], "Thread " + i + " threw exception");
        }

        // Verify all URLs were added
        synchronized (mockCallback) {

        assertEquals(cause, exception.getCause());
    }

    @Test
    public void test_constructor_withMessage() {
        // Test constructor with message only
        final String message = "Job processing error occurred";
        final JobProcessingException exception = new JobProcessingException(message);

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

public class ScriptEngineExceptionTest extends UnitFessTestCase {

    @Test
    public void test_constructor_withMessage() {
        // Test constructor with message only
        String message = "Script engine error occurred";
        ScriptEngineException exception = new ScriptEngineException(message);

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

    @Test

        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withMessageAndNullCause() {
        // Test constructor with message and null cause
        String message = "LDAP error occurred";
        LdapOperationException exception = new LdapOperationException(message, null);

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

    @Test

        }
    }

    @Test
    public void test_throwAndCatchWithCause() {
        // Test throwing and catching the exception with cause
        String expectedMessage = "System error occurred";
        Exception expectedCause = new IllegalStateException("Invalid state");

        try {
            throw new FessSystemException(expectedMessage, expectedCause);
        } catch (FessSystemException e) {

public class GsaConfigExceptionTest extends UnitFessTestCase {

    @Test
    public void test_constructorWithMessage() {
        // Test constructor with message only
        String message = "GSA configuration error occurred";
        GsaConfigException exception = new GsaConfigException(message);

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

                throw new RuntimeException("IO error occurred during delete operation");
            }
        };
        ComponentUtil.register(searchEngineClient, "searchEngineClient");

        // Execute the job
        String result = purgeDocJob.execute();

        // Assert error message is in the result
        assertTrue(result.contains("IO error occurred during delete operation"));
    }

    @Test