Hey guys, I am trying to mock

delay

in the following code:

class A(val coroutineContext: CoroutineContext = EmptyCoroutineContext) {
    fun work(): String {
        val result = runBlocking(coroutineContext) {
            delay(3000)
            return "some_result"
        }
        return result
    }
}

@Test
fun `tests work`() {
    val result = A().work()

    assertEquals("some_result", result)
}

If a pass

TestCoroutineContext()

to runBlocking the

delay

is ignored as expected. However, It’s deprecated in favor of TestCoroutineScope. TestCoroutineScope. However If I pass TestCoroutineScope the test never finishes:

@Test
fun `tests work`() {
    val result = A(TestCoroutineScope(TestCoroutineDispatcher()).coroutineContext).work()
    
    // never reaches here
    assertEquals("some_result", result)
}

What I am missing?

Just use test coroutine context