| /* |
| * Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. |
| */ |
| |
| package kotlinx.coroutines.test |
| |
| import kotlinx.coroutines.* |
| import org.junit.* |
| import org.junit.Test |
| import kotlin.coroutines.* |
| import kotlin.test.* |
| |
| class TestDispatchersTest : TestBase() { |
| |
| @Before |
| fun setUp() { |
| Dispatchers.resetMain() |
| } |
| |
| @Test(expected = IllegalArgumentException::class) |
| fun testSelfSet() = runTest { |
| Dispatchers.setMain(Dispatchers.Main) |
| } |
| |
| @Test |
| fun testSingleThreadExecutor() = runTest { |
| val mainThread = Thread.currentThread() |
| Dispatchers.setMain(Dispatchers.Unconfined) |
| newSingleThreadContext("testSingleThread").use { threadPool -> |
| withContext(Dispatchers.Main) { |
| assertSame(mainThread, Thread.currentThread()) |
| } |
| |
| Dispatchers.setMain(threadPool) |
| withContext(Dispatchers.Main) { |
| assertNotSame(mainThread, Thread.currentThread()) |
| } |
| assertSame(mainThread, Thread.currentThread()) |
| |
| withContext(Dispatchers.Main.immediate) { |
| assertNotSame(mainThread, Thread.currentThread()) |
| } |
| assertSame(mainThread, Thread.currentThread()) |
| |
| Dispatchers.setMain(Dispatchers.Unconfined) |
| withContext(Dispatchers.Main.immediate) { |
| assertSame(mainThread, Thread.currentThread()) |
| } |
| assertSame(mainThread, Thread.currentThread()) |
| } |
| } |
| |
| @Test |
| fun testImmediateDispatcher() = runTest { |
| Dispatchers.setMain(ImmediateDispatcher()) |
| expect(1) |
| withContext(Dispatchers.Main) { |
| expect(3) |
| } |
| |
| Dispatchers.setMain(RegularDispatcher()) |
| withContext(Dispatchers.Main) { |
| expect(6) |
| } |
| |
| finish(7) |
| } |
| |
| private inner class ImmediateDispatcher : CoroutineDispatcher() { |
| override fun isDispatchNeeded(context: CoroutineContext): Boolean { |
| expect(2) |
| return false |
| } |
| |
| override fun dispatch(context: CoroutineContext, block: Runnable) = expectUnreached() |
| } |
| |
| private inner class RegularDispatcher : CoroutineDispatcher() { |
| override fun isDispatchNeeded(context: CoroutineContext): Boolean { |
| expect(4) |
| return true |
| } |
| |
| override fun dispatch(context: CoroutineContext, block: Runnable) { |
| expect(5) |
| block.run() |
| } |
| } |
| } |