| /* |
| * Copyright 2016-2017 JetBrains s.r.o. |
| * |
| * 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 kotlinx.coroutines.experimental |
| |
| import org.junit.Test |
| |
| class LaunchLazyTest : TestBase() { |
| @Test |
| fun testLaunchAndYieldJoin() = runBlocking { |
| expect(1) |
| val job = launch(context, CoroutineStart.LAZY) { |
| expect(4) |
| yield() // does nothing -- main waits |
| expect(5) |
| } |
| expect(2) |
| yield() // does nothing, was not started yet |
| expect(3) |
| check(!job.isActive && !job.isCompleted) |
| job.join() |
| check(!job.isActive && job.isCompleted) |
| finish(6) |
| } |
| |
| @Test |
| fun testStart() = runBlocking { |
| expect(1) |
| val job = launch(context, CoroutineStart.LAZY) { |
| expect(5) |
| yield() // yields back to main |
| expect(7) |
| } |
| expect(2) |
| yield() // does nothing, was not started yet |
| expect(3) |
| check(!job.isActive && !job.isCompleted) |
| check(job.start()) |
| check(job.isActive && !job.isCompleted) |
| check(!job.start()) // start again -- does nothing |
| check(job.isActive && !job.isCompleted) |
| expect(4) |
| yield() // now yield to started coroutine |
| expect(6) |
| check(job.isActive && !job.isCompleted) |
| yield() // yield again |
| check(!job.isActive && job.isCompleted) // it completes this time |
| expect(8) |
| job.join() // immediately returns |
| finish(9) |
| } |
| } |