assertThat(Adapters.INTEGER_AS_LONG.fromDer(bytes)).isEqualTo(-100L)
    assertThat(Adapters.INTEGER_AS_LONG.toDer(-100L)).isEqualTo(bytes)
  }

  @Test fun `five byte integer`() {
    val bytes = "02058000000001".decodeHex()
    assertThat(Adapters.INTEGER_AS_LONG.fromDer(bytes)).isEqualTo(-549755813887L)
    assertThat(Adapters.INTEGER_AS_LONG.toDer(-549755813887L)).isEqualTo(bytes)
  }

  @Test fun `eight zeros`() {