// Fallback: truncate the newest message to fit
            final LlmMessage newest = history.get(history.size() - 1);
            final String truncated = newest.getContent().substring(0, Math.min(budgetChars, newest.getContent().length()));
            request.addMessage(new LlmMessage(newest.getRole(), truncated));
            if (logger.isDebugEnabled()) {

ag><Key>tag2</Key><Value>value2</Value></Tag></And></Filter><Status>Enabled</Status><Expiration><Date>` + time.Now().Truncate(24*time.Hour).UTC().Add(-24*time.Hour).Format(time.RFC3339) + `</Date></Expiration></Rule><Rule><Filter><And><Prefix>abc/</Prefix><Tag><Key>tag2</Key><Value>value</Value></Tag></And></Filter><Status>Enabled</Status><Expiration><Date>` + time.Now().Truncate(24*time.Hour).UTC().Add(-24*time.Hour).Format(time.RFC3339) + `</Date></Expiration></Rule></LifecycleConfiguration>`,...

     *
     * @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
     */

			for _, ver := range vers {
				// Truncate later modtimes, not selected.
				if ver.header.ModTime > latest.header.ModTime {
					versions[i] = versions[i][1:]
					continue
				}
				// Truncate matches
				if ver.header == latest.header {
					versions[i] = versions[i][1:]
					continue
				}

				// Truncate non-empty version and type matches

		if err := recover(); err == nil {
			t.Fatal("Truncate(-1) should have panicked")
		}
	}()
	var b Buffer
	b.Truncate(-1)
}

func TestBufferTruncateOutOfRange(t *testing.T) {
	defer func() {
		if err := recover(); err == nil {
			t.Fatal("Truncate(20) should have panicked")
		}
	}()
	var b Buffer
	b.Write(make([]byte, 10))
	b.Truncate(20)
}

var containsTests = []struct {

			},
		},
	},
	// Issue 66869: Don't skip over an EOCDR with a truncated comment.
	// The test file sneakily hides a second EOCDR before the first one;
	// previously we would extract one file ("file") from this archive,
	// while most other tools would reject the file or extract a different one ("FILE").
	{
		Name:  "comment-truncated.zip",
		Error: ErrFormat,
	},
}

func TestReader(t *testing.T) {

            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;

          }
        }
      } else if (base != null) {
        this.scheme = base.scheme
      } else {
        val truncated = if (input.length > 6) input.take(6) + "..." else input
        throw IllegalArgumentException(
          "Expected URL scheme 'http' or 'https' but no scheme was found for $truncated",
        )
      }

      // Authority.
      var hasUsername = false
      var hasPassword = false

				},
			},
		},
		// listMultipartResults - 19.
		// Testing for listing of 3 uploadID's for a given object, setting maxKeys to be 2.
		// There are 3 MultipartInfo in the result (uploadIDs[1-3]), it should be truncated to 2.
		// Since there is only single object for bucketNames[1], the NextKeyMarker is set to its name.
		// The last entry in the result, uploadIDs[2], that is should be set as NextUploadIDMarker.

	}

	if createReq.Expiration != nil && !createReq.Expiration.IsZero() {
		// truncate expiration at the second.
		truncateTime := createReq.Expiration.Truncate(time.Second)
		createReq.Expiration = &truncateTime
	}

	// service account access key cannot have space characters beginning and end of the string.