// Empty titles => suffix is empty => falls back to truncated
        assertEquals("Some content here that is quite long enough to be truncated.", result);
    }

    // ========== additional truncated tests ==========

    @Test
    public void test_truncated_nullContent() {
        final ChatMessage msg = ChatMessage.assistantMessage(null);

        assertNotNull(details);
        // Max 50 events displayed, message truncated to 200 chars
        assertTrue(details.contains("Total: 100 event(s) (showing 50)"));
        assertTrue(details.contains("... and 50 more"));
        // Long messages should be truncated with "..."
        assertTrue(details.contains("..."));
    }

    @Test

                }
                truncated = true;
                break;
            }

            documentContent.append(docEntry);
            totalChars += docEntry.length();
        }

        if (logger.isDebugEnabled()) {
            logger.debug("[RAG:ANSWER] generateSummaryResponse. documentContentLength={}, truncated={}", totalChars, truncated);
        }

            sb.append("a");
        }
        String longScript = sb.toString();

        String result = activityHelper.normalizeScript(longScript);

        // Should be truncated to 100 characters (97 + "...")
        assertEquals(100, result.length());
        assertTrue(result.endsWith("..."));
    }

    @Test
    public void test_normalizeScript_exactlyMaxLength() {

     *
     * @param msg the assistant chat message
     * @param mode the content mode (full, smart_summary, source_titles, source_titles_and_urls, truncated, none)
     * @param assistantMaxChars the maximum characters for truncated mode
     * @param summaryMaxChars the maximum characters for summary modes
     * @return the content string for history, or null if the message should be excluded
     */

     * @param maxDisplayEvents the maximum number of events to display
     * @param maxMessageLength the maximum length of each log message
     * @return the formatted details string with summary header and truncated entries
     */
    protected String formatDetails(final List<LogNotificationEvent> events, final int maxDetailsLength, final int maxDisplayEvents,
            final int maxMessageLength) {

            if (s == null) return "null";
            String t = s.replace("\n", "\\n");
            if (t.length() > 500) {
                return t.substring(0, 500) + "...(truncated)";
            }
            return t;
        }
    }

    private static ExecResult exec(String[] command) throws IOException, InterruptedException, ExecutionException {

            callback.onChunk("response", true);
        });

        client.generateSummaryResponse("summarize", documents, history, (chunk, done) -> {});

        // The document content in system message should be truncated
        final String systemMsg = captured.toString();
        // Not all 10 documents should be fully included
        int docCount = 0;
        int fromIndex = 0;

    }
    return null;
  }

  @SuppressWarnings("CatchingUnchecked") // sneaky checked exception
  private void addPendingString(StringBuilder builder) {
    // Capture current builder length so it can be truncated if this future ends up completing while
    // the toString is being calculated
    int truncateLength = builder.length();

    builder.append("PENDING");

    @RetainedLocalRef Object localValue = value();

        }
      };

  /**
   * A Throwable used to record a stack trace that illustrates an example of a specific lock
   * acquisition ordering. The top of the stack trace is truncated such that it starts with the
   * acquisition of the lock in question, e.g.
   *
   * <pre>
   * com...ExampleStackTrace: LockB -&gt; LockC