| /* |
| * Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. |
| */ |
| |
| package kotlinx.coroutines |
| |
| import org.hamcrest.MatcherAssert.* |
| import org.hamcrest.core.* |
| import org.junit.* |
| import java.util.concurrent.* |
| import kotlin.coroutines.* |
| |
| class DelayJvmTest : TestBase() { |
| /** |
| * Test that delay works properly in contexts with custom [ContinuationInterceptor] |
| */ |
| @Test |
| fun testDelayInArbitraryContext() = runBlocking { |
| var thread: Thread? = null |
| val pool = Executors.newFixedThreadPool(1) { runnable -> |
| Thread(runnable).also { thread = it } |
| } |
| val context = CustomInterceptor(pool) |
| val c = async(context) { |
| assertThat(Thread.currentThread(), IsEqual(thread)) |
| delay(100) |
| assertThat(Thread.currentThread(), IsEqual(thread)) |
| 42 |
| } |
| assertThat(c.await(), IsEqual(42)) |
| pool.shutdown() |
| } |
| |
| @Test |
| fun testDelayWithoutDispatcher() = runBlocking(CoroutineName("testNoDispatcher.main")) { |
| // launch w/o a specified dispatcher |
| val c = async(CoroutineName("testNoDispatcher.inner")) { |
| delay(100) |
| 42 |
| } |
| assertThat(c.await(), IsEqual(42)) |
| } |
| |
| @Test |
| fun testNegativeDelay() = runBlocking { |
| expect(1) |
| val job = async { |
| expect(3) |
| delay(0) |
| expect(4) |
| } |
| |
| delay(-1) |
| expect(2) |
| job.await() |
| finish(5) |
| } |
| |
| class CustomInterceptor(val pool: Executor) : AbstractCoroutineContextElement(ContinuationInterceptor), ContinuationInterceptor { |
| override fun <T> interceptContinuation(continuation: Continuation<T>): Continuation<T> = |
| Wrapper(pool, continuation) |
| } |
| |
| class Wrapper<T>(val pool: Executor, private val cont: Continuation<T>) : Continuation<T> { |
| override val context: CoroutineContext |
| get() = cont.context |
| |
| override fun resumeWith(result: Result<T>) { |
| pool.execute { cont.resumeWith(result) } |
| } |
| } |
| } |