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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 kotlin.coroutines.*
import kotlin.test.*
class ProduceTest : TestBase() {
@Test
fun testBasic() = runTest {
val c = produce {
expect(2)
send(1)
expect(3)
send(2)
expect(6)
}
expect(1)
check(c.receive() == 1)
expect(4)
check(c.receive() == 2)
expect(5)
check(c.receiveOrNull() == null)
finish(7)
}
@Test
fun testCancelWithoutCause() = runTest {
val c = produce(NonCancellable) {
expect(2)
send(1)
expect(3)
try {
send(2) // will get cancelled
expectUnreached()
} catch (e: Throwable) {
expect(7)
check(e is ClosedSendChannelException)
throw e
}
expectUnreached()
}
expect(1)
check(c.receive() == 1)
expect(4)
c.cancel()
expect(5)
assertNull(c.receiveOrNull())
expect(6)
yield() // to produce
finish(8)
}
@Test
fun testCancelWithCause() = runTest {
val c = produce(NonCancellable) {
expect(2)
send(1)
expect(3)
try {
send(2) // will get cancelled
expectUnreached()
} catch (e: Throwable) {
expect(6)
check(e is TestException)
throw e
}
expectUnreached()
}
expect(1)
check(c.receive() == 1)
expect(4)
c.cancel(TestException())
try {
assertNull(c.receiveOrNull())
expectUnreached()
} catch (e: TestException) {
expect(5)
}
yield() // to produce
finish(7)
}
@Test
fun testCancelOnCompletionUnconfined() = runTest {
cancelOnCompletion(Dispatchers.Unconfined)
}
@Test
fun testCancelOnCompletion() = runTest {
cancelOnCompletion(coroutineContext)
}
private suspend fun cancelOnCompletion(coroutineContext: CoroutineContext) = CoroutineScope(coroutineContext).apply {
val source = Channel<Int>()
expect(1)
val produced = produce<Int>(coroutineContext, onCompletion = source.consumes()) {
expect(2)
source.receive()
}
yield()
expect(3)
produced.cancel()
try {
source.receive()
// TODO shouldn't it be ClosedReceiveChannelException ?
} catch (e: CancellationException) {
finish(4)
}
}
}
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