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/*
* Copyright 2016-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
package kotlinx.coroutines
import kotlinx.coroutines.flow.*
import org.junit.*
class ReusableContinuationStressTest : TestBase() {
private val iterations = 1000 * stressTestMultiplierSqrt
@Test // Originally reported by @denis-bezrukov in #2736
fun testDebounceWithStateFlow() = runBlocking<Unit> {
withContext(Dispatchers.Default) {
repeat(iterations) {
launch { // <- load the dispatcher and OS scheduler
runStressTestOnce(1, 1)
}
}
}
}
private suspend fun runStressTestOnce(delay: Int, debounce: Int) = coroutineScope {
val stateFlow = MutableStateFlow(0)
val emitter = launch {
repeat(1000) { i ->
stateFlow.emit(i)
delay(delay.toLong())
}
}
var last = 0
stateFlow.debounce(debounce.toLong()).take(100).collect { i ->
if (i - last > 100) {
last = i
}
}
emitter.cancel()
}
}
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