if (Character.isISOControl(codePoint) && !Character.isWhitespace(codePoint)) {
        return false
      }
    }
    return true
  } catch (_: EOFException) {
    return false // Truncated UTF-8 sequence.
  }

          f'{url}\n\n')
      failure_msg += (
          f'Here\'s a fragment of the log containing the failure:\n\n'
          f'[ ... TRUNCATED ... ]\n\n'
          f'{invocation_results["log_fragment"]}\n'
          f'\n[ ... TRUNCATED ... ]\n'
      )
      failure = ElemTree.SubElement(
          testcase, elem_name,
          message=f'Bazel invocation {invocation_id} failed.')

            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() {

        });

        assertEquals("Invalid avLen for AvEOL", exception.getMessage(), "Should throw exception for invalid EOL");
    }

    /**
     * Test decode with truncated data
     */
    @Test
    @DisplayName("Decode should handle truncated data")
    void testDecodeTruncatedData() {
        byte[] truncatedData = new byte[3]; // Less than 4 bytes

import java.security.MessageDigest;

/**
 * This is an implementation of the HMACT64 keyed hashing algorithm.
 * HMACT64 is defined by Luke Leighton as a modified HMAC-MD5 (RFC 2104)
 * in which the key is truncated at 64 bytes (rather than being hashed
 * via MD5).
 */
class HMACT64 extends MessageDigest implements Cloneable {

    private static final int BLOCK_LENGTH = 64;

    private static final byte IPAD = (byte) 0x36;

import java.security.MessageDigest;

/**
 * This is an implementation of the HMACT64 keyed hashing algorithm.
 * HMACT64 is defined by Luke Leighton as a modified HMAC-MD5 (RFC 2104)
 * in which the key is truncated at 64 bytes (rather than being hashed
 * via MD5).
 */
public class HMACT64 extends MessageDigest implements Cloneable {

    private static final int BLOCK_LENGTH = 64;

    assertInvalid("HTTP/1.1 2000 OK")
    assertInvalid("HTTP/1.1 two OK")
    assertInvalid("HTTP/1.1 2")
    assertInvalid("HTTP/1.1 2000")
    assertInvalid("HTTP/1.1 two")
  }

  @Test
  fun truncated() {
    assertInvalid("")
    assertInvalid("H")
    assertInvalid("HTTP/1")
    assertInvalid("HTTP/1.")
    assertInvalid("HTTP/1.1")
    assertInvalid("HTTP/1.1 ")
    assertInvalid("HTTP/1.1 2")

            // Challenge bytes would be at 24-31 but we're truncated

            // When & Then
            assertThrows(ArrayIndexOutOfBoundsException.class, () -> new Type2Message(truncatedMessage));
        }

        @Test
        @DisplayName("parse should handle truncated message missing target info")
        void testParse_InputLengthTooSmallForTargetInfo() {
            // Given

     *
     * @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) {