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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 kotlinx.coroutines.flow.*
import kotlinx.coroutines.reactive.*
import org.junit.Test
import org.junit.runner.*
import org.junit.runners.*
import kotlin.coroutines.*
import kotlin.test.*
@RunWith(Parameterized::class)
class IntegrationTest(
private val ctx: Ctx,
private val delay: Boolean
) : TestBase() {
enum class Ctx {
MAIN { override fun invoke(context: CoroutineContext): CoroutineContext = context.minusKey(Job) },
DEFAULT { override fun invoke(context: CoroutineContext): CoroutineContext = Dispatchers.Default },
UNCONFINED { override fun invoke(context: CoroutineContext): CoroutineContext = Dispatchers.Unconfined };
abstract operator fun invoke(context: CoroutineContext): CoroutineContext
}
companion object {
@Parameterized.Parameters(name = "ctx={0}, delay={1}")
@JvmStatic
fun params(): Collection<Array<Any>> = Ctx.values().flatMap { ctx ->
listOf(false, true).map { delay ->
arrayOf(ctx, delay)
}
}
}
@Test
fun testEmpty(): Unit = runBlocking {
val observable = rxObservable<String>(ctx(coroutineContext)) {
if (delay) delay(1)
// does not send anything
}
assertFailsWith<NoSuchElementException> { observable.awaitFirst() }
assertEquals("OK", observable.awaitFirstOrDefault("OK"))
assertNull(observable.awaitFirstOrNull())
assertEquals("ELSE", observable.awaitFirstOrElse { "ELSE" })
assertFailsWith<NoSuchElementException> { observable.awaitLast() }
assertFailsWith<NoSuchElementException> { observable.awaitSingle() }
var cnt = 0
observable.collect {
cnt++
}
assertEquals(0, cnt)
}
@Test
fun testSingle() = runBlocking {
val observable = rxObservable(ctx(coroutineContext)) {
if (delay) delay(1)
send("OK")
}
assertEquals("OK", observable.awaitFirst())
assertEquals("OK", observable.awaitFirstOrDefault("OK"))
assertEquals("OK", observable.awaitFirstOrNull())
assertEquals("OK", observable.awaitFirstOrElse { "ELSE" })
assertEquals("OK", observable.awaitLast())
assertEquals("OK", observable.awaitSingle())
var cnt = 0
observable.collect {
assertEquals("OK", it)
cnt++
}
assertEquals(1, cnt)
}
@Test
fun testNumbers() = runBlocking<Unit> {
val n = 100 * stressTestMultiplier
val observable = rxObservable(ctx(coroutineContext)) {
for (i in 1..n) {
send(i)
if (delay) delay(1)
}
}
assertEquals(1, observable.awaitFirst())
assertEquals(1, observable.awaitFirstOrDefault(0))
assertEquals(1, observable.awaitFirstOrNull())
assertEquals(1, observable.awaitFirstOrElse { 0 })
assertEquals(n, observable.awaitLast())
assertFailsWith<IllegalArgumentException> { observable.awaitSingle() }
checkNumbers(n, observable)
val channel = observable.toChannel()
checkNumbers(n, channel.consumeAsFlow().asObservable(ctx(coroutineContext)))
channel.cancel()
}
@Test
fun testCancelWithoutValue() = runTest {
val job = launch(Job(), start = CoroutineStart.UNDISPATCHED) {
rxObservable<String> {
hang { }
}.awaitFirst()
}
job.cancel()
job.join()
}
@Test
fun testEmptySingle() = runTest(unhandled = listOf({e -> e is NoSuchElementException})) {
expect(1)
val job = launch(Job(), start = CoroutineStart.UNDISPATCHED) {
rxObservable<String> {
yield()
expect(2)
// Nothing to emit
}.awaitFirst()
}
job.join()
finish(3)
}
@Test
fun testObservableWithTimeout() = runTest {
val observable = rxObservable<Int> {
expect(2)
withTimeout(1) { delay(100) }
}
try {
expect(1)
observable.awaitFirstOrNull()
} catch (e: CancellationException) {
expect(3)
}
finish(4)
}
private suspend fun checkNumbers(n: Int, observable: Observable<Int>) {
var last = 0
observable.collect {
assertEquals(++last, it)
}
assertEquals(n, last)
}
}
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