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/*
* 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 kotlinx.coroutines.*
import org.junit.Test
import kotlin.test.*
class CompletableTest : TestBase() {
@Test
fun testBasicSuccess() = runBlocking {
expect(1)
val completable = rxCompletable(currentDispatcher()) {
expect(4)
}
expect(2)
completable.subscribe {
expect(5)
}
expect(3)
yield() // to completable coroutine
finish(6)
}
@Test
fun testBasicFailure() = runBlocking {
expect(1)
val completable = rxCompletable(currentDispatcher()) {
expect(4)
throw RuntimeException("OK")
}
expect(2)
completable.subscribe({
expectUnreached()
}, { error ->
expect(5)
assertTrue(error is RuntimeException)
assertEquals("OK", error.message)
})
expect(3)
yield() // to completable coroutine
finish(6)
}
@Test
fun testBasicUnsubscribe() = runBlocking {
expect(1)
val completable = rxCompletable(currentDispatcher()) {
expect(4)
yield() // back to main, will get cancelled
expectUnreached()
}
expect(2)
// nothing is called on a disposed rx2 completable
val sub = completable.subscribe({
expectUnreached()
}, {
expectUnreached()
})
expect(3)
yield() // to started coroutine
expect(5)
sub.dispose() // will cancel coroutine
yield()
finish(6)
}
@Test
fun testAwaitSuccess() = runBlocking {
expect(1)
val completable = rxCompletable(currentDispatcher()) {
expect(3)
}
expect(2)
completable.await() // shall launch coroutine
finish(4)
}
@Test
fun testAwaitFailure() = runBlocking {
expect(1)
val completable = rxCompletable(currentDispatcher()) {
expect(3)
throw RuntimeException("OK")
}
expect(2)
try {
completable.await() // shall launch coroutine and throw exception
expectUnreached()
} catch (e: RuntimeException) {
finish(4)
assertEquals("OK", e.message)
}
}
/** Tests that calls to [await] throw [CancellationException] and dispose of the subscription when their [Job] is
* cancelled. */
@Test
fun testAwaitCancellation() = runTest {
expect(1)
val completable = CompletableSource { s ->
s.onSubscribe(object: Disposable {
override fun dispose() { expect(4) }
override fun isDisposed(): Boolean { expectUnreached(); return false }
})
}
val job = launch(start = CoroutineStart.UNDISPATCHED) {
try {
expect(2)
completable.await()
} catch (e: CancellationException) {
expect(5)
throw e
}
}
expect(3)
job.cancelAndJoin()
finish(6)
}
@Test
fun testSuppressedException() = runTest {
val completable = rxCompletable(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 {
completable.await()
expectUnreached()
} catch (e: TestException) {
assertTrue(e.suppressed[0] is TestException2)
}
}
@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 completable = rxCompletable(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) {
completable.subscribe(object : CompletableObserver {
override fun onSubscribe(d: Disposable) {
expect(2)
disposable = d
}
override fun onComplete() {
expectUnreached()
}
override fun onError(t: Throwable) {
expectUnreached()
}
})
expect(3)
yield() // run coroutine
finish(6)
}
}
@Test
fun testFatalExceptionInSubscribe() = runTest {
val handler: (Throwable) -> Unit = { e ->
assertTrue(e is UndeliverableException && e.cause is LinkageError); expect(2)
}
withExceptionHandler(handler) {
rxCompletable(Dispatchers.Unconfined) {
expect(1)
}.subscribe { throw LinkageError() }
finish(3)
}
}
@Test
fun testFatalExceptionInSingle() = runTest {
rxCompletable(Dispatchers.Unconfined) {
throw LinkageError()
}.subscribe({ expectUnreached() }, { expect(1); assertTrue(it is LinkageError) })
finish(2)
}
}
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