| /* |
| * Copyright 2016-2017 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| @file:Suppress("NAMED_ARGUMENTS_NOT_ALLOWED") // KT-21913 |
| |
| package kotlinx.coroutines.experimental |
| |
| import kotlin.coroutines.experimental.* |
| import kotlin.test.* |
| |
| class AsyncTest : TestBase() { |
| @Test |
| fun testSimple() = runTest { |
| expect(1) |
| val d = async(coroutineContext) { |
| expect(3) |
| 42 |
| } |
| expect(2) |
| assertTrue(d.isActive) |
| assertTrue(d.await() == 42) |
| assertTrue(!d.isActive) |
| expect(4) |
| assertTrue(d.await() == 42) // second await -- same result |
| finish(5) |
| } |
| |
| @Test |
| fun testUndispatched() = runTest { |
| expect(1) |
| val d = async(coroutineContext, start = CoroutineStart.UNDISPATCHED) { |
| expect(2) |
| 42 |
| } |
| expect(3) |
| assertTrue(!d.isActive) |
| assertTrue(d.await() == 42) |
| finish(4) |
| } |
| |
| @Test |
| fun testSimpleException() = runTest( |
| expected = { it is TestException } |
| ) { |
| expect(1) |
| val d = async(coroutineContext) { |
| finish(3) |
| throw TestException() |
| } |
| expect(2) |
| d.await() // will throw IOException |
| } |
| |
| @Test |
| fun testDeferAndYieldException() = runTest( |
| expected = { it is TestException } |
| ) { |
| expect(1) |
| val d = async(coroutineContext) { |
| expect(3) |
| yield() // no effect, parent waiting |
| finish(4) |
| throw TestException() |
| } |
| expect(2) |
| d.await() // will throw IOException |
| } |
| |
| @Test |
| fun testDeferWithTwoWaiters() = runTest { |
| expect(1) |
| val d = async(coroutineContext) { |
| expect(5) |
| yield() |
| expect(9) |
| 42 |
| } |
| expect(2) |
| launch(coroutineContext) { |
| expect(6) |
| assertTrue(d.await() == 42) |
| expect(11) |
| } |
| expect(3) |
| launch(coroutineContext) { |
| expect(7) |
| assertTrue(d.await() == 42) |
| expect(12) |
| } |
| expect(4) |
| yield() // this actually yields control to async, which produces results and resumes both waiters (in order) |
| expect(8) |
| yield() // yield again to "d", which completes |
| expect(10) |
| yield() // yield to both waiters |
| finish(13) |
| } |
| |
| class BadClass { |
| override fun equals(other: Any?): Boolean = error("equals") |
| override fun hashCode(): Int = error("hashCode") |
| override fun toString(): String = error("toString") |
| } |
| |
| @Test |
| fun testDeferBadClass() = runTest { |
| val bad = BadClass() |
| val d = async(coroutineContext) { |
| expect(1) |
| bad |
| } |
| assertTrue(d.await() === bad) |
| finish(2) |
| } |
| |
| private class TestException : Exception() |
| } |