Future question

[eed3si9n]

I tried to unstub Future in eed3si9n/verify#16 following monix/minitest#41, but it doesn't seem to work.

[densh]

Similarly to Scala.js, we have a single hardware thread at the moment. So Await.result naturally isn't supported because if you wait on a single thread you block that thread. This means that event loop never gets a chance to run any more futures while you wait so it's guaranteed to time out.

[eed3si9n]

I am not familiar with the implementation of Scala.JS scalalib override, but minitest works ok on Scala.JS, and so did Minitest's Future/Promise/Await stub.

object Future {
  def apply[A](f: => A): Future[A] =
    new Future(Try(f))

  def successful[A](value: A): Future[A] =
    new Future(Success(value))

  def failed[A](e: Throwable): Future[A] =
    new Future(Failure(e))
}

[eed3si9n]

Here's a workaround that seems to work for me:

object Await {
  def result[A](future: Future[A], duration: Duration): A = {
    scala.scalanative.runtime.loop()
    future.value.get.get
  }
}

[lolgab]

Very nice workaround! Thank you.