/* * Copyright 2016 Dennis Vriend * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package akka.stream.integration package promise import scala.concurrent.{ Future, Promise } class PromiseTest extends TestSpec { def withPromise[A]()(fn: (Promise[A], Future[A]) => Unit): Unit = { val p: Promise[A] = Promise[A]() val f: Future[A] = p.future fn(p, f) } "a promise" should "be completed successfully" in withPromise[Int]() { (p, f) => p success 1 p shouldBe 'completed f.futureValue shouldBe 1 p shouldBe 'completed } it should "not be completed multiple times" in withPromise[Int]() { (p, f) => p success 1 p shouldBe 'completed intercept[IllegalStateException] { p success 2 } } it should "not be completed with a success and then with a failure" in withPromise[Int]() { (p, f) => p failure new RuntimeException("Test failure") p shouldBe 'completed f.toTry should be a 'failure intercept[IllegalStateException] { p success 2 } } it should "be completed with a failure" in withPromise[Int]() { (p, f) => p failure new RuntimeException("Test failure") p shouldBe 'completed f.toTry should be a 'failure } it should "not be completed with a failure and then with a success" in withPromise[Int]() { (p, f) => p failure new RuntimeException("Test failure") p shouldBe 'completed intercept[IllegalStateException] { p success 2 } } }