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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 kotlin.coroutines.*
import kotlin.test.*
class RunBlockingTest : TestBase() {
@Test
fun testWithTimeoutBusyWait() = runBlocking {
val value = withTimeoutOrNull(10) {
while (isActive) {
// Busy wait
}
"value"
}
assertEquals("value", value)
}
@Test
fun testPrivateEventLoop() {
expect(1)
runBlocking {
expect(2)
assertTrue(coroutineContext[ContinuationInterceptor] is EventLoop)
yield() // is supported!
expect(3)
}
finish(4)
}
@Test
fun testOuterEventLoop() {
expect(1)
runBlocking {
expect(2)
val outerEventLoop = coroutineContext[ContinuationInterceptor] as EventLoop
runBlocking(coroutineContext) {
expect(3)
// still same event loop
assertSame(coroutineContext[ContinuationInterceptor], outerEventLoop)
yield() // still works
expect(4)
}
expect(5)
}
finish(6)
}
@Test
fun testOtherDispatcher() {
expect(1)
val name = "RunBlockingTest.testOtherDispatcher"
val thread = newSingleThreadContext(name)
runBlocking(thread) {
expect(2)
assertSame(coroutineContext[ContinuationInterceptor], thread)
assertTrue(Thread.currentThread().name.contains(name))
yield() // should work
expect(3)
}
finish(4)
thread.close()
}
@Test
fun testCancellation() = newFixedThreadPoolContext(2, "testCancellation").use {
val job = GlobalScope.launch(it) {
runBlocking(coroutineContext) {
while (true) {
yield()
}
}
}
runBlocking {
job.cancelAndJoin()
}
}
@Test
fun testCancelWithDelay() {
// see https://github.com/Kotlin/kotlinx.coroutines/issues/586
try {
runBlocking {
expect(1)
coroutineContext.cancel()
expect(2)
try {
delay(1)
expectUnreached()
} finally {
expect(3)
}
}
expectUnreached()
} catch (e: CancellationException) {
finish(4)
}
}
@Test(expected = CancellationException::class)
fun testDispatchOnShutdown() = runBlocking<Unit> {
expect(1)
val job = launch(NonCancellable) {
try {
expect(2)
delay(Long.MAX_VALUE)
} finally {
finish(4)
}
}
yield()
expect(3)
coroutineContext.cancel()
job.cancel()
}
@Test(expected = CancellationException::class)
fun testDispatchOnShutdown2() = runBlocking<Unit> {
coroutineContext.cancel()
expect(1)
val job = launch(NonCancellable, start = CoroutineStart.UNDISPATCHED) {
try {
expect(2)
delay(Long.MAX_VALUE)
} finally {
finish(4)
}
}
expect(3)
job.cancel()
}
@Test
fun testNestedRunBlocking() = runBlocking {
delay(100)
val value = runBlocking {
delay(100)
runBlocking {
delay(100)
1
}
}
assertEquals(1, value)
}
}
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