}
        };
    try {
      iter.hasNext();
      fail();
    } catch (IllegalStateException expected) {
    }
  }

  // Technically we should test other reentrant scenarios (9 combinations of
  // hasNext/next/peek), but we'll cop out for now, knowing that peek() and
  // next() both start by invoking hasNext() anyway.

  /** Throws an undeclared checked exception. */

          }
        };
    try {
      iter.hasNext();
      fail();
    } catch (IllegalStateException expected) {
    }
  }

  // Technically we should test other reentrant scenarios (9 combinations of
  // hasNext/next/peek), but we'll cop out for now, knowing that peek() and
  // next() both start by invoking hasNext() anyway.

  /** Throws an undeclared checked exception. */

    queueDispatcher.enqueueResponse(MockResponse(body = "call2 response"))
    queueDispatcher.enqueueResponse(MockResponse(body = "call1 response"))

    // We use a re-entrant dispatcher to initiate one HTTPS connection while the other is in flight.
    server.dispatcher =
      object : Dispatcher() {
        var requestCount = 0

    val listener: EventListener =
      object : EventListener() {
        override fun requestHeadersStart(call: Call) {
          try {
            // Cancel call from another thread to avoid reentrance.
            cancelLater(call, 0).join()
          } catch (e: InterruptedException) {
            throw AssertionError()
          }
        }
      }