assertThat(headers.getDate("testDate")).isEqualTo(expected)
  }

  @Test fun setInstant() {
    val expected = Instant.ofEpochMilli(1000L)
    val headers =
      Headers.Builder()
        .add("Test-Instant", Instant.ofEpochMilli(0L))
        .set("Test-Instant", expected)
        .build()
    assertThat(headers["Test-Instant"]).isEqualTo("Thu, 01 Jan 1970 00:00:01 GMT")

      .toFormatter()

  private val offset = ZoneOffset.systemDefault()

  override fun format(record: LogRecord): String {
    val message = formatMessage(record)

    val time = Instant.ofEpochMilli(record.millis).atZone(offset)

    return if (record.thrown != null) {
      val sw = StringWriter(4096)
      val pw = PrintWriter(sw)
      record.thrown.printStackTrace(pw)