| /* |
| * Copyright 2016-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. |
| */ |
| |
| package kotlinx.coroutines |
| |
| import org.junit.* |
| import org.junit.Assert.* |
| import java.util.concurrent.* |
| import kotlin.coroutines.* |
| |
| class ExecutorsTest : TestBase() { |
| private fun checkThreadName(prefix: String) { |
| val name = Thread.currentThread().name |
| check(name.startsWith(prefix)) { "Expected thread name to start with '$prefix', found: '$name'" } |
| } |
| |
| @Test |
| fun testSingleThread() { |
| val context = newSingleThreadContext("TestThread") |
| runBlocking(context) { |
| checkThreadName("TestThread") |
| } |
| context.close() |
| } |
| |
| @Test |
| fun testFixedThreadPool() { |
| val context = newFixedThreadPoolContext(2, "TestPool") |
| runBlocking(context) { |
| checkThreadName("TestPool") |
| } |
| context.close() |
| } |
| |
| @Test |
| fun testExecutorToDispatcher() { |
| val executor = Executors.newSingleThreadExecutor { r -> Thread(r, "TestExecutor") } |
| runBlocking(executor.asCoroutineDispatcher()) { |
| checkThreadName("TestExecutor") |
| } |
| executor.shutdown() |
| } |
| |
| @Test |
| fun testConvertedDispatcherToExecutor() { |
| val executor: ExecutorService = Executors.newSingleThreadExecutor { r -> Thread(r, "TestExecutor") } |
| val dispatcher: CoroutineDispatcher = executor.asCoroutineDispatcher() |
| assertSame(executor, dispatcher.asExecutor()) |
| executor.shutdown() |
| } |
| |
| @Test |
| fun testDefaultDispatcherToExecutor() { |
| val latch = CountDownLatch(1) |
| Dispatchers.Default.asExecutor().execute { |
| checkThreadName("DefaultDispatcher") |
| latch.countDown() |
| } |
| latch.await() |
| } |
| |
| @Test |
| fun testCustomDispatcherToExecutor() { |
| expect(1) |
| val dispatcher = object : CoroutineDispatcher() { |
| override fun dispatch(context: CoroutineContext, block: Runnable) { |
| expect(2) |
| block.run() |
| } |
| } |
| val executor = dispatcher.asExecutor() |
| assertSame(dispatcher, executor.asCoroutineDispatcher()) |
| executor.execute { |
| expect(3) |
| } |
| finish(4) |
| } |
| |
| @Test |
| fun testTwoThreads() { |
| val ctx1 = newSingleThreadContext("Ctx1") |
| val ctx2 = newSingleThreadContext("Ctx2") |
| runBlocking(ctx1) { |
| checkThreadName("Ctx1") |
| withContext(ctx2) { |
| checkThreadName("Ctx2") |
| } |
| checkThreadName("Ctx1") |
| } |
| ctx1.close() |
| ctx2.close() |
| } |
| |
| @Test |
| fun testShutdownExecutorService() { |
| val executorService = Executors.newSingleThreadExecutor { r -> Thread(r, "TestExecutor") } |
| val dispatcher = executorService.asCoroutineDispatcher() |
| runBlocking (dispatcher) { |
| checkThreadName("TestExecutor") |
| } |
| dispatcher.close() |
| check(executorService.isShutdown) |
| } |
| } |