| /* |
| * Copyright 2016-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. |
| */ |
| package kotlinx.coroutines |
| |
| import kotlinx.coroutines.exceptions.* |
| import kotlin.coroutines.* |
| import kotlin.test.* |
| |
| class RunBlockingTest : TestBase() { |
| |
| @Test |
| fun testWithTimeoutBusyWait() = runMtTest { |
| val value = withTimeoutOrNull(10) { |
| while (isActive) { |
| // Busy wait |
| } |
| "value" |
| } |
| |
| assertEquals("value", value) |
| } |
| |
| @Test |
| fun testPrivateEventLoop() { |
| expect(1) |
| runBlocking { |
| expect(2) |
| assertTrue(coroutineContext[ContinuationInterceptor] is EventLoop) |
| yield() // is supported! |
| expect(3) |
| } |
| finish(4) |
| } |
| |
| @Test |
| fun testOuterEventLoop() { |
| expect(1) |
| runBlocking { |
| expect(2) |
| val outerEventLoop = coroutineContext[ContinuationInterceptor] as EventLoop |
| runBlocking(coroutineContext) { |
| expect(3) |
| // still same event loop |
| assertSame(coroutineContext[ContinuationInterceptor], outerEventLoop) |
| yield() // still works |
| expect(4) |
| } |
| expect(5) |
| } |
| finish(6) |
| } |
| |
| @Test |
| fun testOtherDispatcher() = runMtTest { |
| expect(1) |
| val name = "RunBlockingTest.testOtherDispatcher" |
| val thread = newSingleThreadContext(name) |
| runBlocking(thread) { |
| expect(2) |
| assertSame(coroutineContext[ContinuationInterceptor], thread) |
| assertTrue(currentThreadName().contains(name)) |
| yield() // should work |
| expect(3) |
| } |
| finish(4) |
| thread.close() |
| } |
| |
| @Test |
| fun testCancellation() = runMtTest { |
| newFixedThreadPoolContext(2, "testCancellation").use { |
| val job = GlobalScope.launch(it) { |
| runBlocking(coroutineContext) { |
| while (true) { |
| yield() |
| } |
| } |
| } |
| |
| runBlocking { |
| job.cancelAndJoin() |
| } |
| } |
| } |
| |
| @Test |
| fun testCancelWithDelay() { |
| // see https://github.com/Kotlin/kotlinx.coroutines/issues/586 |
| try { |
| runBlocking { |
| expect(1) |
| coroutineContext.cancel() |
| expect(2) |
| try { |
| delay(1) |
| expectUnreached() |
| } finally { |
| expect(3) |
| } |
| } |
| expectUnreached() |
| } catch (e: CancellationException) { |
| finish(4) |
| } |
| } |
| |
| @Test |
| fun testDispatchOnShutdown(): Unit = assertFailsWith<CancellationException> { |
| runBlocking { |
| expect(1) |
| val job = launch(NonCancellable) { |
| try { |
| expect(2) |
| delay(Long.MAX_VALUE) |
| } finally { |
| finish(4) |
| } |
| } |
| |
| yield() |
| expect(3) |
| coroutineContext.cancel() |
| job.cancel() |
| } |
| }.let { } |
| |
| @Test |
| fun testDispatchOnShutdown2(): Unit = assertFailsWith<CancellationException> { |
| runBlocking { |
| coroutineContext.cancel() |
| expect(1) |
| val job = launch(NonCancellable, start = CoroutineStart.UNDISPATCHED) { |
| try { |
| expect(2) |
| delay(Long.MAX_VALUE) |
| } finally { |
| finish(4) |
| } |
| } |
| |
| expect(3) |
| job.cancel() |
| } |
| }.let { } |
| |
| @Test |
| fun testNestedRunBlocking() = runBlocking { |
| delay(100) |
| val value = runBlocking { |
| delay(100) |
| runBlocking { |
| delay(100) |
| 1 |
| } |
| } |
| |
| assertEquals(1, value) |
| } |
| |
| @Test |
| fun testIncompleteState() { |
| val handle = runBlocking { |
| // See #835 |
| coroutineContext[Job]!!.invokeOnCompletion { } |
| } |
| |
| handle.dispose() |
| } |
| |
| @Test |
| fun testCancelledParent() { |
| val job = Job() |
| job.cancel() |
| assertFailsWith<CancellationException> { |
| runBlocking(job) { |
| expectUnreached() |
| } |
| } |
| } |
| } |