.writeByte(0b11111111)
        .writeByte(0b11111111)
        .writeByte(0b11111111)
        .writeByte(0b11111111)

    val derReader = DerReader(buffer)

    val header = derReader.readHeader()
    assertThat(header.length).isEqualTo(Long.MAX_VALUE)
  }

  @Test fun `decode length overflowing Long`() {
    val buffer =
      Buffer()
        .writeByte(0b00000010)