key = (
      "0123456789012345678901234567890123456789012345678901234567890123456789" +
        "01234567890123456789012345678901234567890123456789"
    )
    cache.edit(key)!!.abort()
    // Contains all valid characters.
    key = "abcdefghijklmnopqrstuvwxyz_0123456789"
    cache.edit(key)!!.abort()
    // Contains dash.
    key = "-20384573948576"
    cache.edit(key)!!.abort()
  }

  @ParameterizedTest

   2FF0-2FFB; [IDEOGRAPHIC DESCRIPTION CHARACTERS]...

    assertThat(stringPrep("\udb40\udc7f")).isNull() // Note that this is one code point.
  }

  /**
   * For this test:
   *
   *  * U+0627 and U+0628 are RandALCat characters
   *  * 'a', 'b', and 'c' are LCat characters.
   *  * '1', '2', and '3' are neither.
   */
  @Test fun bidiRules() {
    assertThat(stringPrep("\u0627")).isEqualTo("\u0627")

    assertThat("hello-world".map()).isEqualTo("hello-world")
    assertThat("HELLO".map()).isEqualTo("hello")
    assertThat("Hello".map()).isEqualTo("hello")

    // These compound characters map their its components.
    assertThat("¼".map()).isEqualTo("1⁄4")
    assertThat("™".map()).isEqualTo("tm")
  }

  /** Confirm the compact table satisfies is documented invariants. */

0E01..0E32    ; valid                                  # 1.1  THAI CHARACTER KO KAI..THAI CHARACTER SARA AA
0E33          ; mapped                 ; 0E4D 0E32     # 1.1  THAI CHARACTER SARA AM
0E34..0E3A    ; valid                                  # 1.1  THAI CHARACTER SARA I..THAI CHARACTER PHINTHU
0E3B..0E3E    ; disallowed                             # NA   <reserved-0E3B>..<reserved-0E3E>

   0080-009F; [CONTROL CHARACTERS]
   06DD; ARABIC END OF AYAH
   070F; SYRIAC ABBREVIATION MARK
   180E; MONGOLIAN VOWEL SEPARATOR
   200C; ZERO WIDTH NON-JOINER
   200D; ZERO WIDTH JOINER
   2028; LINE SEPARATOR
   2029; PARAGRAPH SEPARATOR
   2060; WORD JOINER
   2061; FUNCTION APPLICATION
   2062; INVISIBLE TIMES
   2063; INVISIBLE SEPARATOR
   206A-206F; [CONTROL CHARACTERS]
   FEFF; ZERO WIDTH NO-BREAK SPACE

 * units away from 0 and 0.499 towards 0. The smallest unit this returns is "µs"; the largest unit
 * it returns is "s". For values in [-499..499] this returns "  0 µs".
 *
 * The returned string attempts to be column-aligned to 6 characters. For negative and large values
 * the returned string may be longer.
 */
fun formatDuration(ns: Long): String {
  val s =
    when {
      ns <= -999_500_000 -> "${(ns - 500_000_000) / 1_000_000_000} s "

   * @param code Status code as defined by
   *     [Section 7.4 of RFC 6455](http://tools.ietf.org/html/rfc6455#section-7.4).
   * @param reason Reason for shutting down, no longer than 123 bytes of UTF-8 encoded data (**not** characters) or null.
   * @throws IllegalArgumentException if [code] is invalid or [reason] is too long.
   */
  fun close(
    code: Int,
    reason: String?,
  ): Boolean

  /**

          } else {
            evictToRecoverBytes(dynamicTableByteCount - maxDynamicTableByteCount)
          }
        }
      }
    }

  /**
   * An HTTP/2 response cannot contain uppercase header characters and must be treated as
   * malformed.
   */
  @Throws(IOException::class)
  fun checkLowercase(name: ByteString): ByteString {
    for (i in 0 until name.size) {

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