Hey guys, I am trying to mock `delay` in the following code: ``` class A(val coroutineContext: Cor...

# coroutines

[ilya-gh]

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?

[gildor]

Just use test coroutine context

[gildor]

This way to get context of scope looks wrong in general, because you don't use scope and structured concurrency