| /* |
| * 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. |
| */ |
| |
| package kotlinx.coroutines.experimental |
| |
| import org.hamcrest.core.IsEqual |
| import org.hamcrest.core.IsInstanceOf |
| import org.junit.Assert.assertThat |
| import org.junit.Assert.fail |
| import org.junit.Test |
| |
| class CompletableDeferredTest : TestBase() { |
| @Test |
| fun testFresh() { |
| val c = CompletableDeferred<String>() |
| assertThat(c.isActive, IsEqual(true)) |
| assertThat(c.isCancelled, IsEqual(false)) |
| assertThat(c.isCompleted, IsEqual(false)) |
| assertThat(c.isCompletedExceptionally, IsEqual(false)) |
| assertThrows<IllegalStateException> { c.getCompletionException() } |
| assertThrows<IllegalStateException> { c.getCompleted() } |
| } |
| |
| @Test |
| fun testComplete() { |
| val c = CompletableDeferred<String>() |
| assertThat(c.complete("OK"), IsEqual(true)) |
| checkCompleteOk(c) |
| assertThat(c.complete("OK"), IsEqual(false)) |
| checkCompleteOk(c) |
| } |
| |
| private fun checkCompleteOk(c: CompletableDeferred<String>) { |
| assertThat(c.isActive, IsEqual(false)) |
| assertThat(c.isCancelled, IsEqual(false)) |
| assertThat(c.isCompleted, IsEqual(true)) |
| assertThat(c.isCompletedExceptionally, IsEqual(false)) |
| assertThat(c.getCompletionException(), IsInstanceOf(CancellationException::class.java)) |
| assertThat(c.getCompleted(), IsEqual("OK")) |
| } |
| |
| @Test |
| fun testCompleteWithException() { |
| val c = CompletableDeferred<String>() |
| assertThat(c.completeExceptionally(TestException()), IsEqual(true)) |
| checkCompleteTestException(c) |
| assertThat(c.completeExceptionally(TestException()), IsEqual(false)) |
| checkCompleteTestException(c) |
| } |
| |
| private fun checkCompleteTestException(c: CompletableDeferred<String>) { |
| assertThat(c.isActive, IsEqual(false)) |
| assertThat(c.isCancelled, IsEqual(false)) |
| assertThat(c.isCompleted, IsEqual(true)) |
| assertThat(c.isCompletedExceptionally, IsEqual(true)) |
| assertThat(c.getCompletionException(), IsInstanceOf(TestException::class.java)) |
| assertThrows<TestException> { c.getCompleted() } |
| } |
| |
| @Test |
| fun testCancel() { |
| val c = CompletableDeferred<String>() |
| assertThat(c.cancel(), IsEqual(true)) |
| checkCancel(c) |
| assertThat(c.cancel(), IsEqual(false)) |
| checkCancel(c) |
| } |
| |
| private fun checkCancel(c: CompletableDeferred<String>) { |
| assertThat(c.isActive, IsEqual(false)) |
| assertThat(c.isCancelled, IsEqual(true)) |
| assertThat(c.isCompleted, IsEqual(true)) |
| assertThat(c.isCompletedExceptionally, IsEqual(true)) |
| assertThat(c.getCompletionException(), IsInstanceOf(CancellationException::class.java)) |
| assertThrows<CancellationException> { c.getCompleted() } |
| } |
| |
| @Test |
| fun testCancelWithException() { |
| val c = CompletableDeferred<String>() |
| assertThat(c.cancel(TestException()), IsEqual(true)) |
| checkCancelWithException(c) |
| assertThat(c.cancel(TestException()), IsEqual(false)) |
| checkCancelWithException(c) |
| } |
| |
| private fun checkCancelWithException(c: CompletableDeferred<String>) { |
| assertThat(c.isActive, IsEqual(false)) |
| assertThat(c.isCancelled, IsEqual(true)) |
| assertThat(c.isCompleted, IsEqual(true)) |
| assertThat(c.isCompletedExceptionally, IsEqual(true)) |
| assertThat(c.getCompletionException(), IsInstanceOf(TestException::class.java)) |
| assertThrows<TestException> { c.getCompleted() } |
| } |
| |
| @Test |
| fun testAwait() = runBlocking { |
| expect(1) |
| val c = CompletableDeferred<String>() |
| launch(context, CoroutineStart.UNDISPATCHED) { |
| expect(2) |
| assertThat(c.await(), IsEqual("OK")) // suspends |
| expect(5) |
| assertThat(c.await(), IsEqual("OK")) // does not suspend |
| expect(6) |
| } |
| expect(3) |
| c.complete("OK") |
| expect(4) |
| yield() // to launch |
| finish(7) |
| } |
| |
| private inline fun <reified T: Throwable> assertThrows(block: () -> Unit) { |
| try { |
| block() |
| fail("Should not complete normally") |
| } catch (e: Throwable) { |
| assertThat(e, IsInstanceOf(T::class.java)) |
| } |
| } |
| |
| class TestException : Throwable() |
| } |