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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.channels
import kotlinx.coroutines.*
import org.junit.Test
import org.junit.runner.*
import org.junit.runners.*
import java.io.*
import kotlin.test.*
@RunWith(Parameterized::class)
class ActorTest(private val capacity: Int) : TestBase() {
companion object {
@Parameterized.Parameters(name = "Capacity: {0}")
@JvmStatic
fun params(): Collection<Array<Any>> = listOf(0, 1, Channel.UNLIMITED, Channel.CONFLATED).map { arrayOf<Any>(it) }
}
@Test
fun testEmpty() = runBlocking {
expect(1)
val actor = actor<String>(capacity = capacity) {
expect(3)
}
actor as Job // type assertion
assertTrue(actor.isActive)
assertFalse(actor.isCompleted)
assertFalse(actor.isClosedForSend)
expect(2)
yield() // to actor code
assertFalse(actor.isActive)
assertTrue(actor.isCompleted)
assertTrue(actor.isClosedForSend)
finish(4)
}
@Test
fun testOne() = runBlocking {
expect(1)
val actor = actor<String>(capacity = capacity) {
expect(3)
assertEquals("OK", receive())
expect(6)
}
actor as Job // type assertion
assertTrue(actor.isActive)
assertFalse(actor.isCompleted)
assertFalse(actor.isClosedForSend)
expect(2)
yield() // to actor code
assertTrue(actor.isActive)
assertFalse(actor.isCompleted)
assertFalse(actor.isClosedForSend)
expect(4)
// send message to actor
actor.send("OK")
expect(5)
yield() // to actor code
assertFalse(actor.isActive)
assertTrue(actor.isCompleted)
assertTrue(actor.isClosedForSend)
finish(7)
}
@Test
fun testCloseWithoutCause() = runTest {
val actor = actor<Int>(capacity = capacity) {
val element = channel.receiveOrNull()
expect(2)
assertEquals(42, element)
val next = channel.receiveOrNull()
assertNull(next)
expect(3)
}
expect(1)
actor.send(42)
yield()
actor.close()
yield()
finish(4)
}
@Test
fun testCloseWithCause() = runTest {
val actor = actor<Int>(capacity = capacity) {
val element = channel.receiveOrNull()
expect(2)
require(element!! == 42)
try {
channel.receiveOrNull()
} catch (e: IOException) {
expect(3)
}
}
expect(1)
actor.send(42)
yield()
actor.close(IOException())
yield()
finish(4)
}
@Test
fun testCancelEnclosingJob() = runTest {
val job = async {
actor<Int>(capacity = capacity) {
expect(1)
channel.receiveOrNull()
expectUnreached()
}
}
yield()
yield()
expect(2)
yield()
job.cancel()
try {
job.await()
expectUnreached()
} catch (e: CancellationException) {
assertTrue(e.message?.contains("DeferredCoroutine was cancelled") ?: false)
}
finish(3)
}
@Test
fun testThrowingActor() = runTest(unhandled = listOf({e -> e is IllegalArgumentException})) {
val parent = Job()
val actor = actor<Int>(parent) {
channel.consumeEach {
expect(1)
throw IllegalArgumentException()
}
}
actor.send(1)
parent.cancel()
parent.join()
finish(2)
}
@Test
fun testChildJob() = runTest {
val parent = Job()
actor<Int>(parent) {
launch {
try {
delay(Long.MAX_VALUE)
} finally {
expect(1)
}
}
}
yield()
yield()
parent.cancel()
parent.join()
finish(2)
}
@Test
fun testCloseFreshActor() = runTest {
for (start in CoroutineStart.values()) {
val job = launch {
val actor = actor<Int>(start = start) { for (i in channel) {} }
actor.close()
}
job.join()
}
}
}
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