kotlinx-coroutines-debug/test/junit4/CoroutinesTimeoutDisabledTracesTest.kt

/*
 * Copyright 2016-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
 */

package kotlinx.coroutines.debug.junit4

import kotlinx.coroutines.*
import org.junit.*
import org.junit.runners.model.*

class CoroutinesTimeoutDisabledTracesTest : TestBase() {

    @Rule
    @JvmField
    public val validation = TestFailureValidation(
        500, true, false,
        TestResultSpec(
            "hangingTest", expectedOutParts = listOf(
                "Coroutines dump",
                "Test hangingTest timed out after 500 milliseconds",
                "BlockingCoroutine{Active}",
                "at kotlinx.coroutines.debug.junit4.CoroutinesTimeoutDisabledTracesTest.hangForever",
                "at kotlinx.coroutines.debug.junit4.CoroutinesTimeoutDisabledTracesTest.waitForHangJob"
            ),
            notExpectedOutParts = listOf("Coroutine creation stacktrace"),
            error = TestTimedOutException::class.java
        )
    )

    private val job = GlobalScope.launch(Dispatchers.Unconfined) { hangForever() }

    private suspend fun hangForever() {
        suspendCancellableCoroutine<Unit> {  }
        expectUnreached()
    }

    @Test
    fun hangingTest() = runBlocking<Unit> {
        waitForHangJob()
        expectUnreached()
    }

    private suspend fun waitForHangJob() {
        job.join()
        expectUnreached()
    }
}