| /* |
| * Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. |
| */ |
| |
| package kotlinx.coroutines.rx2 |
| |
| import io.reactivex.* |
| import io.reactivex.disposables.* |
| import io.reactivex.exceptions.* |
| import io.reactivex.functions.* |
| import kotlinx.coroutines.* |
| import org.junit.* |
| import org.junit.Test |
| import java.util.concurrent.* |
| import kotlin.test.* |
| |
| class SingleTest : TestBase() { |
| @Before |
| fun setup() { |
| ignoreLostThreads("RxComputationThreadPool-", "RxCachedWorkerPoolEvictor-", "RxSchedulerPurge-") |
| } |
| |
| @Test |
| fun testBasicSuccess() = runBlocking { |
| expect(1) |
| val single = rxSingle(currentDispatcher()) { |
| expect(4) |
| "OK" |
| } |
| expect(2) |
| single.subscribe { value -> |
| expect(5) |
| assertEquals("OK", value) |
| } |
| expect(3) |
| yield() // to started coroutine |
| finish(6) |
| } |
| |
| @Test |
| fun testBasicFailure() = runBlocking { |
| expect(1) |
| val single = rxSingle(currentDispatcher()) { |
| expect(4) |
| throw RuntimeException("OK") |
| } |
| expect(2) |
| single.subscribe({ |
| expectUnreached() |
| }, { error -> |
| expect(5) |
| assertTrue(error is RuntimeException) |
| assertEquals("OK", error.message) |
| }) |
| expect(3) |
| yield() // to started coroutine |
| finish(6) |
| } |
| |
| |
| @Test |
| fun testBasicUnsubscribe() = runBlocking { |
| expect(1) |
| val single = rxSingle(currentDispatcher()) { |
| expect(4) |
| yield() // back to main, will get cancelled |
| expectUnreached() |
| |
| } |
| expect(2) |
| // nothing is called on a disposed rx2 single |
| val sub = single.subscribe({ |
| expectUnreached() |
| }, { |
| expectUnreached() |
| }) |
| expect(3) |
| yield() // to started coroutine |
| expect(5) |
| sub.dispose() // will cancel coroutine |
| yield() |
| finish(6) |
| } |
| |
| @Test |
| fun testSingleNoWait() { |
| val single = rxSingle { |
| "OK" |
| } |
| |
| checkSingleValue(single) { |
| assertEquals("OK", it) |
| } |
| } |
| |
| @Test |
| fun testSingleAwait() = runBlocking { |
| assertEquals("OK", Single.just("O").await() + "K") |
| } |
| |
| @Test |
| fun testSingleEmitAndAwait() { |
| val single = rxSingle { |
| Single.just("O").await() + "K" |
| } |
| |
| checkSingleValue(single) { |
| assertEquals("OK", it) |
| } |
| } |
| |
| @Test |
| fun testSingleWithDelay() { |
| val single = rxSingle { |
| Observable.timer(50, TimeUnit.MILLISECONDS).map { "O" }.awaitSingle() + "K" |
| } |
| |
| checkSingleValue(single) { |
| assertEquals("OK", it) |
| } |
| } |
| |
| @Test |
| fun testSingleException() { |
| val single = rxSingle { |
| Observable.just("O", "K").awaitSingle() + "K" |
| } |
| |
| checkErroneous(single) { |
| assert(it is IllegalArgumentException) |
| } |
| } |
| |
| @Test |
| fun testAwaitFirst() { |
| val single = rxSingle { |
| Observable.just("O", "#").awaitFirst() + "K" |
| } |
| |
| checkSingleValue(single) { |
| assertEquals("OK", it) |
| } |
| } |
| |
| @Test |
| fun testAwaitLast() { |
| val single = rxSingle { |
| Observable.just("#", "O").awaitLast() + "K" |
| } |
| |
| checkSingleValue(single) { |
| assertEquals("OK", it) |
| } |
| } |
| |
| @Test |
| fun testExceptionFromObservable() { |
| val single = rxSingle { |
| try { |
| Observable.error<String>(RuntimeException("O")).awaitFirst() |
| } catch (e: RuntimeException) { |
| Observable.just(e.message!!).awaitLast() + "K" |
| } |
| } |
| |
| checkSingleValue(single) { |
| assertEquals("OK", it) |
| } |
| } |
| |
| @Test |
| fun testExceptionFromCoroutine() { |
| val single = rxSingle<String> { |
| throw IllegalStateException(Observable.just("O").awaitSingle() + "K") |
| } |
| |
| checkErroneous(single) { |
| assert(it is IllegalStateException) |
| assertEquals("OK", it.message) |
| } |
| } |
| |
| @Test |
| fun testSuppressedException() = runTest { |
| val single = rxSingle(currentDispatcher()) { |
| launch(start = CoroutineStart.ATOMIC) { |
| throw TestException() // child coroutine fails |
| } |
| try { |
| delay(Long.MAX_VALUE) |
| } finally { |
| throw TestException2() // but parent throws another exception while cleaning up |
| } |
| } |
| try { |
| single.await() |
| expectUnreached() |
| } catch (e: TestException) { |
| assertTrue(e.suppressed[0] is TestException2) |
| } |
| } |
| |
| @Test |
| fun testFatalExceptionInSubscribe() = runTest { |
| val handler = { e: Throwable -> |
| assertTrue(e is UndeliverableException && e.cause is LinkageError) |
| expect(2) |
| } |
| withExceptionHandler(handler) { |
| rxSingle(Dispatchers.Unconfined) { |
| expect(1) |
| 42 |
| }.subscribe(Consumer { |
| throw LinkageError() |
| }) |
| finish(3) |
| } |
| } |
| |
| @Test |
| fun testFatalExceptionInSingle() = runTest { |
| rxSingle(Dispatchers.Unconfined) { |
| throw LinkageError() |
| }.subscribe({ _, e -> assertTrue(e is LinkageError); expect(1) }) |
| |
| finish(2) |
| } |
| |
| @Test |
| fun testUnhandledException() = runTest { |
| expect(1) |
| var disposable: Disposable? = null |
| val handler = { e: Throwable -> |
| assertTrue(e is UndeliverableException && e.cause is TestException) |
| expect(5) |
| } |
| val single = rxSingle(currentDispatcher()) { |
| expect(4) |
| disposable!!.dispose() // cancel our own subscription, so that delay will get cancelled |
| try { |
| delay(Long.MAX_VALUE) |
| } finally { |
| throw TestException() // would not be able to handle it since mono is disposed |
| } |
| } |
| withExceptionHandler(handler) { |
| single.subscribe(object : SingleObserver<Unit> { |
| override fun onSubscribe(d: Disposable) { |
| expect(2) |
| disposable = d |
| } |
| |
| override fun onSuccess(t: Unit) { |
| expectUnreached() |
| } |
| |
| override fun onError(t: Throwable) { |
| expectUnreached() |
| } |
| }) |
| expect(3) |
| yield() // run coroutine |
| finish(6) |
| } |
| } |
| } |