// Percent encode this character.
      if (encodedCharBuffer == null) {
        encodedCharBuffer = Buffer()
      }

      if (charset == null || charset == Charsets.UTF_8) {
        encodedCharBuffer.writeUtf8CodePoint(codePoint)
      } else {
        encodedCharBuffer.writeString(input, i, i + Character.charCount(codePoint), charset)
      }

      while (!encodedCharBuffer.exhausted()) {

    setLevel(Level.BODY)
    val buffer = Buffer()
    buffer.writeUtf8CodePoint(0x89)
    buffer.writeUtf8CodePoint(0x50)
    buffer.writeUtf8CodePoint(0x4e)
    buffer.writeUtf8CodePoint(0x47)
    buffer.writeUtf8CodePoint(0x0d)
    buffer.writeUtf8CodePoint(0x0a)
    buffer.writeUtf8CodePoint(0x1a)
    buffer.writeUtf8CodePoint(0x0a)
    server.enqueue(
      MockResponse
        .Builder()

      sourceCodePoint1 = sourceCodePoint1,
      type = TYPE_MAPPED,
      mappedTo =
        Buffer()
          .also {
            for (cp in mappedToCodePoints) {
              it.writeUtf8CodePoint(cp)
            }
          }.readByteString(),
    )