AirSpec(19.9.7) for Scala Future

ScalaFutureSupport.scala

package ninja.grimrose.sandbox

import wvlet.airframe.SourceCode
import wvlet.airspec.AirSpec
import wvlet.airspec.spi.AssertionFailure

import scala.concurrent.{ExecutionContext, Future}
import scala.util.{Failure, Success}

trait ScalaFutureSupport { this: AirSpec =>
  import scala.concurrent.duration._
  import scala.language.implicitConversions

  protected def timeout: Duration = 1.minutes
  implicit def executionContext: ExecutionContext

  implicit class RichFuture[T](scalaFuture: Future[T]) {
    def assertAsync(cond: T => Boolean)(implicit code: SourceCode): Unit = {
      scalaFuture.value match {
        case Some(s: Success[T]) => assert(cond(s.value))
        case Some(f: Failure[T]) => throw f.exception
        case None                => throw AssertionFailure("future value is None", code)
      }
    }
  }

}

scala.js 0.6.29

def test(): Unit = {
  val future = Future {
    1 + 2
  }

  future.assertAsync { actual =>
    actual == 3
  }
}

failed: future value is None

---

def test(): Unit = {
  val future = Future.successful {
    1 + 2
  }

  future.assertAsync { actual =>
    actual == 3
  }
}

Passed: Total 1, Failed 0, Errors 0, Passed 1