assertThat(Adapters.INTEGER_AS_LONG.toDer(-256L)).isEqualTo(bytes)
    assertThat(Adapters.INTEGER_AS_LONG.fromDer(bytes)).isEqualTo(-256L)
  }

  @Test fun `max long`() {
    val bytes = "02087fffffffffffffff".decodeHex()
    assertThat(Adapters.INTEGER_AS_LONG.fromDer(bytes)).isEqualTo(Long.MAX_VALUE)
    assertThat(Adapters.INTEGER_AS_LONG.toDer(Long.MAX_VALUE)).isEqualTo(bytes)
  }

  @Test fun `min long`() {