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|
/**
* Copyright (C) 2012 Typesafe Inc. <http://www.typesafe.com>
*/
package scala.async
import language.{ reflectiveCalls, postfixOps }
import scala.concurrent.{ Future, ExecutionContext, future, Await }
import scala.concurrent.duration._
import scala.async.Async.{ async, await }
object Test extends App {
AsyncSpec.check()
}
class Test1Class {
import ExecutionContext.Implicits.global
def m1(x: Int): Future[Int] = future {
Thread.sleep(1000)
x + 2
}
def m2(y: Int): Future[Int] = async {
val f = m1(y)
val x = await(f)
x + 2
}
def m3(y: Int): Future[Int] = async {
val f1 = m1(y)
val x1 = await(f1)
val f2 = m1(y + 2)
val x2 = await(f2)
x1 + x2
}
// currently fails with: error: not found: value f2
/*
def m4(y: Int): Future[Int] = async {
val f1 = m1(y)
val f2 = m1(y + 2)
val x1 = await(f1)
println("between two awaits")
val x2 = await(f2)
x1 + x2
}
*/
}
object AsyncSpec extends MinimalScalaTest {
"An async method" should {
"support a simple await" in {
val o = new Test1Class
val fut = o.m2(10)
val res = Await.result(fut, 2 seconds)
res mustBe(14)
}
}
"An async method" should {
"support several awaits in sequence" in {
val o = new Test1Class
val fut = o.m3(10)
val res = Await.result(fut, 4 seconds)
res mustBe(26)
}
}
}
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