| /* |
| * Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. |
| */ |
| |
| package kotlinx.coroutines.experimental |
| |
| import kotlin.test.* |
| import java.util.concurrent.ExecutorService |
| import java.util.concurrent.Executors |
| import java.util.concurrent.ThreadFactory |
| import java.util.concurrent.atomic.AtomicInteger |
| import kotlin.coroutines.experimental.CoroutineContext |
| |
| class WithTimeoutOrNullThreadDispatchTest : TestBase() { |
| var executor: ExecutorService? = null |
| |
| @AfterTest |
| fun tearDown() { |
| executor?.shutdown() |
| } |
| |
| @Test |
| fun testCancellationDispatchScheduled() { |
| checkCancellationDispatch { |
| executor = Executors.newScheduledThreadPool(1, it) |
| executor!!.asCoroutineDispatcher() |
| } |
| } |
| |
| @Test |
| fun testCancellationDispatchNonScheduled() { |
| checkCancellationDispatch { |
| executor = Executors.newSingleThreadExecutor(it) |
| executor!!.asCoroutineDispatcher() |
| } |
| } |
| |
| @Test |
| fun testCancellationDispatchCustomNoDelay() { |
| // it also checks that there is at most once scheduled request in flight (no spurious concurrency) |
| var error: String? = null |
| checkCancellationDispatch { |
| executor = Executors.newSingleThreadExecutor(it) |
| val scheduled = AtomicInteger(0) |
| object : CoroutineDispatcher() { |
| override fun dispatch(context: CoroutineContext, block: Runnable) { |
| if (scheduled.incrementAndGet() > 1) error = "Two requests are scheduled concurrently" |
| executor!!.execute { |
| scheduled.decrementAndGet() |
| block.run() |
| } |
| } |
| } |
| } |
| error?.let { error(it) } |
| } |
| |
| private fun checkCancellationDispatch(factory: (ThreadFactory) -> CoroutineDispatcher) = runBlocking { |
| expect(1) |
| var thread: Thread? = null |
| val dispatcher = factory(ThreadFactory { Thread(it).also { thread = it } }) |
| withContext(dispatcher) { |
| expect(2) |
| assertEquals(thread, Thread.currentThread()) |
| val result = withTimeoutOrNull(100) { |
| try { |
| expect(3) |
| delay(1000) |
| expectUnreached() |
| } catch (e: CancellationException) { |
| expect(4) |
| assertEquals(thread, Thread.currentThread()) |
| throw e // rethrow |
| } |
| } |
| assertEquals(thread, Thread.currentThread()) |
| assertEquals(null, result) |
| expect(5) |
| } |
| finish(6) |
| } |
| } |