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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.plugins.*
import kotlinx.coroutines.*
import kotlinx.coroutines.CancellationException
import org.hamcrest.core.*
import org.junit.*
import org.junit.Test
import java.util.concurrent.*
import kotlin.test.*
class ObservableTest : TestBase() {
@Before
fun setup() {
ignoreLostThreads("RxComputationThreadPool-", "RxCachedWorkerPoolEvictor-", "RxSchedulerPurge-")
}
@Test
fun testBasicSuccess() = runBlocking {
expect(1)
val observable = rxObservable(currentDispatcher()) {
expect(4)
send("OK")
}
expect(2)
observable.subscribe { value ->
expect(5)
Assert.assertThat(value, IsEqual("OK"))
}
expect(3)
yield() // to started coroutine
finish(6)
}
@Test
fun testBasicFailure() = runBlocking {
expect(1)
val observable = rxObservable<String>(currentDispatcher()) {
expect(4)
throw RuntimeException("OK")
}
expect(2)
observable.subscribe({
expectUnreached()
}, { error ->
expect(5)
Assert.assertThat(error, IsInstanceOf(RuntimeException::class.java))
Assert.assertThat(error.message, IsEqual("OK"))
})
expect(3)
yield() // to started coroutine
finish(6)
}
@Test
fun testBasicUnsubscribe() = runBlocking {
expect(1)
val observable = rxObservable<String>(currentDispatcher()) {
expect(4)
yield() // back to main, will get cancelled
expectUnreached()
}
expect(2)
val sub = observable.subscribe({
expectUnreached()
}, {
expectUnreached()
})
expect(3)
yield() // to started coroutine
expect(5)
sub.dispose() // will cancel coroutine
yield()
finish(6)
}
@Test
fun testNotifyOnceOnCancellation() = runTest {
expect(1)
val observable =
rxObservable(currentDispatcher()) {
expect(5)
send("OK")
try {
delay(Long.MAX_VALUE)
} catch (e: CancellationException) {
expect(11)
}
}
.doOnNext {
expect(6)
assertEquals("OK", it)
}
.doOnDispose {
expect(10) // notified once!
}
expect(2)
val job = launch(start = CoroutineStart.UNDISPATCHED) {
expect(3)
observable.collect {
expect(8)
assertEquals("OK", it)
}
}
expect(4)
yield() // to observable code
expect(7)
yield() // to consuming coroutines
expect(9)
job.cancel()
job.join()
finish(12)
}
@Test
fun testFailingConsumer() = runTest {
expect(1)
val pub = rxObservable(currentDispatcher()) {
expect(2)
send("OK")
try {
delay(Long.MAX_VALUE)
} catch (e: CancellationException) {
finish(5)
}
}
try {
pub.collect {
expect(3)
throw TestException()
}
} catch (e: TestException) {
expect(4)
}
}
@Test
fun testExceptionAfterCancellation() {
// Test that no exceptions were reported to the global EH (it will fail the test if so)
val handler = { e: Throwable ->
assertFalse(e is CancellationException)
}
withExceptionHandler(handler) {
RxJavaPlugins.setErrorHandler {
require(it !is CancellationException)
}
Observable
.interval(1, TimeUnit.MILLISECONDS)
.take(1000)
.switchMapSingle {
rxSingle {
timeBomb().await()
}
}
.blockingSubscribe({}, {})
}
}
private fun timeBomb() = Single.timer(1, TimeUnit.MILLISECONDS).doOnSuccess { throw TestException() }
}
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