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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.test.*
class LaunchLazyTest : TestBase() {
@Test
fun testLaunchAndYieldJoin() = runTest {
expect(1)
val job = launch(start = CoroutineStart.LAZY) {
expect(4)
yield() // does nothing -- main waits
expect(5)
}
expect(2)
yield() // does nothing, was not started yet
expect(3)
assertTrue(!job.isActive && !job.isCompleted)
job.join()
assertTrue(!job.isActive && job.isCompleted)
finish(6)
}
@Test
fun testStart() = runTest {
expect(1)
val job = launch(start = CoroutineStart.LAZY) {
expect(5)
yield() // yields back to main
expect(7)
}
expect(2)
yield() // does nothing, was not started yet
expect(3)
assertTrue(!job.isActive && !job.isCompleted)
assertTrue(job.start())
assertTrue(job.isActive && !job.isCompleted)
assertTrue(!job.start()) // start again -- does nothing
assertTrue(job.isActive && !job.isCompleted)
expect(4)
yield() // now yield to started coroutine
expect(6)
assertTrue(job.isActive && !job.isCompleted)
yield() // yield again
assertTrue(!job.isActive && job.isCompleted) // it completes this time
expect(8)
job.join() // immediately returns
finish(9)
}
@Test
fun testInvokeOnCompletionAndStart() = runTest {
expect(1)
val job = launch(start = CoroutineStart.LAZY) {
expect(5)
}
yield() // no started yet!
expect(2)
job.invokeOnCompletion {
expect(6)
}
expect(3)
job.start()
expect(4)
yield()
finish(7)
}
}
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