| |
| /* |
| * 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 WithTimeoutTest : TestBase() { |
| /** |
| * Tests a case of no timeout and no suspension inside. |
| */ |
| @Test |
| fun testBasicNoSuspend() = runTest { |
| expect(1) |
| val result = withTimeout(10_000) { |
| expect(2) |
| "OK" |
| } |
| assertEquals("OK", result) |
| finish(3) |
| } |
| |
| /** |
| * Tests a case of no timeout and one suspension inside. |
| */ |
| @Test |
| fun testBasicSuspend() = runTest { |
| expect(1) |
| val result = withTimeout(10_000) { |
| expect(2) |
| yield() |
| expect(3) |
| "OK" |
| } |
| assertEquals("OK", result) |
| finish(4) |
| } |
| |
| /** |
| * Tests proper dispatching of `withTimeout` blocks |
| */ |
| @Test |
| fun testDispatch() = runTest { |
| expect(1) |
| launch(coroutineContext) { |
| expect(4) |
| yield() // back to main |
| expect(7) |
| } |
| expect(2) |
| // test that it does not yield to the above job when started |
| val result = withTimeout(1000) { |
| expect(3) |
| yield() // yield only now |
| expect(5) |
| "OK" |
| } |
| assertEquals("OK", result) |
| expect(6) |
| yield() // back to launch |
| finish(8) |
| } |
| |
| |
| /** |
| * Tests that a 100% CPU-consuming loop will react on timeout if it has yields. |
| */ |
| @Test |
| fun testYieldBlockingWithTimeout() = runTest( |
| expected = { it is CancellationException } |
| ) { |
| withTimeout(100) { |
| while (true) { |
| yield() |
| } |
| } |
| } |
| |
| /** |
| * Tests that [withTimeout] waits for children coroutines to complete. |
| */ |
| @Test |
| fun testWithTimeoutChildWait() = runTest { |
| expect(1) |
| withTimeout(100) { |
| expect(2) |
| // launch child with timeout |
| launch(coroutineContext) { |
| expect(4) |
| } |
| expect(3) |
| // now will wait for child before returning |
| } |
| finish(5) |
| } |
| |
| @Test |
| fun testBadClass() = runTest { |
| val bad = BadClass() |
| val result = withTimeout(100) { |
| bad |
| } |
| assertSame(bad, result) |
| } |
| |
| class BadClass { |
| override fun equals(other: Any?): Boolean = error("Should not be called") |
| override fun hashCode(): Int = error("Should not be called") |
| override fun toString(): String = error("Should not be called") |
| } |
| |
| @Test |
| fun testExceptionOnTimeout() = runTest { |
| expect(1) |
| try { |
| withTimeout(100) { |
| expect(2) |
| delay(1000) |
| expectUnreached() |
| "OK" |
| } |
| } catch (e: CancellationException) { |
| assertEquals("Timed out waiting for 100 MILLISECONDS", e.message) |
| finish(3) |
| } |
| } |
| |
| @Test |
| fun testSuppressExceptionWithResult() = runTest( |
| expected = { it is CancellationException } |
| ) { |
| expect(1) |
| withTimeout(100) { |
| expect(2) |
| try { |
| delay(1000) |
| } catch (e: CancellationException) { |
| finish(3) |
| } |
| "OK" |
| } |
| expectUnreached() |
| } |
| |
| @Test |
| fun testSuppressExceptionWithAnotherException() = runTest( |
| expected = { it is TestException } |
| ) { |
| expect(1) |
| withTimeout(100) { |
| expect(2) |
| try { |
| delay(1000) |
| } catch (e: CancellationException) { |
| finish(3) |
| throw TestException() |
| } |
| expectUnreached() |
| "OK" |
| } |
| expectUnreached() |
| } |
| |
| private class TestException : Exception() |
| |
| @Test |
| fun testNegativeTimeout() = runTest { |
| expect(1) |
| try { |
| withTimeout(-1) { |
| expectUnreached() |
| "OK" |
| } |
| } catch (e: CancellationException) { |
| assertEquals("Timed out immediately", e.message) |
| finish(2) |
| } |
| } |
| } |
| |