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/*
* Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
@file:Suppress("NAMED_ARGUMENTS_NOT_ALLOWED") // KT-21913
package kotlinx.coroutines
import kotlin.test.*
/**
* Tests that the transitions to the state of the [Job] correspond to documentation in the
* table that is presented in the [Job] documentation.
*/
class JobStatesTest : TestBase() {
@Test
public fun testNormalCompletion() = runTest {
expect(1)
val job = launch(start = CoroutineStart.LAZY) {
expect(2)
// launches child
launch {
expect(4)
}
// completes normally
}
// New job
assertFalse(job.isActive)
assertFalse(job.isCompleted)
assertFalse(job.isCancelled)
// New -> Active
job.start()
assertTrue(job.isActive)
assertFalse(job.isCompleted)
assertFalse(job.isCancelled)
// Active -> Completing
yield() // scheduled & starts child
expect(3)
assertTrue(job.isActive)
assertFalse(job.isCompleted)
assertFalse(job.isCancelled)
// Completing -> Completed
yield()
finish(5)
assertFalse(job.isActive)
assertTrue(job.isCompleted)
assertFalse(job.isCancelled)
}
@Test
public fun testCompletingFailed() = runTest(
unhandled = listOf({ it -> it is TestException })
) {
expect(1)
val job = launch(NonCancellable, start = CoroutineStart.LAZY) {
expect(2)
// launches child
launch {
expect(4)
throw TestException()
}
// completes normally
}
// New job
assertFalse(job.isActive)
assertFalse(job.isCompleted)
assertFalse(job.isCancelled)
// New -> Active
job.start()
assertTrue(job.isActive)
assertFalse(job.isCompleted)
assertFalse(job.isCancelled)
// Active -> Completing
yield() // scheduled & starts child
expect(3)
assertTrue(job.isActive)
assertFalse(job.isCompleted)
assertFalse(job.isCancelled)
// Completing -> Cancelled
yield()
finish(5)
assertFalse(job.isActive)
assertTrue(job.isCompleted)
assertTrue(job.isCancelled)
}
@Test
public fun testFailed() = runTest(
unhandled = listOf({ it -> it is TestException })
) {
expect(1)
val job = launch(NonCancellable, start = CoroutineStart.LAZY) {
expect(2)
// launches child
launch(start = CoroutineStart.ATOMIC) {
expect(4)
}
// failing
throw TestException()
}
// New job
assertFalse(job.isActive)
assertFalse(job.isCompleted)
assertFalse(job.isCancelled)
// New -> Active
job.start()
assertTrue(job.isActive)
assertFalse(job.isCompleted)
assertFalse(job.isCancelled)
// Active -> Cancelling
yield() // scheduled & starts child
expect(3)
assertFalse(job.isActive)
assertFalse(job.isCompleted)
assertTrue(job.isCancelled)
// Cancelling -> Cancelled
yield()
finish(5)
assertFalse(job.isActive)
assertTrue(job.isCompleted)
assertTrue(job.isCancelled)
}
@Test
public fun testCancelling() = runTest {
expect(1)
val job = launch(NonCancellable, start = CoroutineStart.LAZY) {
expect(2)
// launches child
launch(start = CoroutineStart.ATOMIC) {
expect(4)
}
// completes normally
}
// New job
assertFalse(job.isActive)
assertFalse(job.isCompleted)
assertFalse(job.isCancelled)
// New -> Active
job.start()
assertTrue(job.isActive)
assertFalse(job.isCompleted)
assertFalse(job.isCancelled)
// Active -> Completing
yield() // scheduled & starts child
expect(3)
assertTrue(job.isActive)
assertFalse(job.isCompleted)
assertFalse(job.isCancelled)
// Completing -> Cancelling
job.cancel()
assertFalse(job.isActive)
assertFalse(job.isCompleted)
assertTrue(job.isCancelled)
// Cancelling -> Cancelled
yield()
finish(5)
assertFalse(job.isActive)
assertTrue(job.isCompleted)
assertTrue(job.isCancelled)
}
}
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