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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
import org.junit.*
class CancelledAwaitStressTest : TestBase() {
private val n = 1000 * stressTestMultiplier
/**
* Tests that memory does not leak from cancelled [Deferred.await]
*/
@Test
fun testCancelledAwait() = runTest {
val d = async {
delay(Long.MAX_VALUE)
}
repeat(n) {
val waiter = launch(start = CoroutineStart.UNDISPATCHED) {
val a = ByteArray(10000000) // allocate 10M of memory here
d.await()
keepMe(a) // make sure it is kept in state machine
}
waiter.cancel() // cancel await
yield() // complete the waiter job, release its memory
}
d.cancel() // done test
}
/**
* Tests that memory does not leak from cancelled [Job.join]
*/
@Test
fun testCancelledJoin() = runTest {
val j = launch {
delay(Long.MAX_VALUE)
}
repeat(n) {
val joiner = launch(start = CoroutineStart.UNDISPATCHED) {
val a = ByteArray(10000000) // allocate 10M of memory here
j.join()
keepMe(a) // make sure it is kept in state machine
}
joiner.cancel() // cancel join
yield() // complete the joiner job, release its memory
}
j.cancel() // done test
}
private fun keepMe(a: ByteArray) {
// does nothing, makes sure the variable is kept in state-machine
}
}
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