anImportantBlockingCall

thread

launch

Thread.sleeps

@Test
    fun test() {

        val testScope = TestCoroutineScope()
        val concurrentTestScope = TestCoroutineScope()

        fun anImportantBlockingCall() {
            runBlocking(concurrentTestScope.coroutineContext) {
                delay(100)
                println("C")
            }
        }
        
        testScope.runBlockingTest {
            println("A")
            launch {
                anImportantBlockingCall()
            }
            println("B")
        }

    }