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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 kotlinx.coroutines.*
import org.hamcrest.core.*
import org.junit.*
import org.junit.Assert.*
import java.util.concurrent.*
class SingleTest : TestBase() {
@Before
fun setup() {
ignoreLostThreads("RxComputationThreadPool-", "RxCachedWorkerPoolEvictor-", "RxSchedulerPurge-")
}
@Test
fun testBasicSuccess() = runBlocking {
expect(1)
val single = rxSingle {
expect(4)
"OK"
}
expect(2)
single.subscribe { value ->
expect(5)
Assert.assertThat(value, IsEqual("OK"))
}
expect(3)
yield() // to started coroutine
finish(6)
}
@Test
fun testBasicFailure() = runBlocking {
expect(1)
val single = rxSingle(NonCancellable) {
expect(4)
throw RuntimeException("OK")
}
expect(2)
single.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 single = rxSingle {
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 = GlobalScope.rxSingle {
"OK"
}
checkSingleValue(single) {
assertEquals("OK", it)
}
}
@Test
fun testSingleAwait() = runBlocking {
assertEquals("OK", Single.just("O").await() + "K")
}
@Test
fun testSingleEmitAndAwait() {
val single = GlobalScope.rxSingle {
Single.just("O").await() + "K"
}
checkSingleValue(single) {
assertEquals("OK", it)
}
}
@Test
fun testSingleWithDelay() {
val single = GlobalScope.rxSingle {
Observable.timer(50, TimeUnit.MILLISECONDS).map { "O" }.awaitSingle() + "K"
}
checkSingleValue(single) {
assertEquals("OK", it)
}
}
@Test
fun testSingleException() {
val single = GlobalScope.rxSingle {
Observable.just("O", "K").awaitSingle() + "K"
}
checkErroneous(single) {
assert(it is IllegalArgumentException)
}
}
@Test
fun testAwaitFirst() {
val single = GlobalScope.rxSingle {
Observable.just("O", "#").awaitFirst() + "K"
}
checkSingleValue(single) {
assertEquals("OK", it)
}
}
@Test
fun testAwaitLast() {
val single = GlobalScope.rxSingle {
Observable.just("#", "O").awaitLast() + "K"
}
checkSingleValue(single) {
assertEquals("OK", it)
}
}
@Test
fun testExceptionFromObservable() {
val single = GlobalScope.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 = GlobalScope.rxSingle<String> {
throw IllegalStateException(Observable.just("O").awaitSingle() + "K")
}
checkErroneous(single) {
assert(it is IllegalStateException)
assertEquals("OK", it.message)
}
}
@Test
fun testCancelsParentOnFailure() = runTest(
expected = { it is RuntimeException && it.message == "OK" }
) {
// has parent, so should cancel it on failure
rxSingle<Unit> {
throw RuntimeException("OK")
}.subscribe(
{ expectUnreached() },
{ assert(it is RuntimeException) }
)
}
}
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