client =
      client
        .newBuilder()
        .callTimeout(250, TimeUnit.MILLISECONDS)
        .build()
    server.enqueue(
      MockResponse
        .Builder()
        .bodyDelay(500, TimeUnit.MILLISECONDS)
        .setHeader("content-type", "text/event-stream")
        .body("data: hey\n\n")
        .build(),
    )
    val source = newEventSource()

  /** Delay the response body by sleeping 1s.  */
  @Test
  fun delayResponse() {
    assumeNotWindows()
    server.enqueue(
      MockResponse
        .Builder()
        .body("ABCDEF")
        .bodyDelay(1, TimeUnit.SECONDS)
        .build(),
    )
    val startNanos = System.nanoTime()
    val connection = server.url("/").toUrl().openConnection()
    val inputStream = connection!!.getInputStream()