Test the Cupcake app: Android Basics with Compose

[LaEntropiaa]

URL of codelab
https://developer.android.com/codelabs/basic-android-kotlin-compose-test-cupcake?continue=https%3A%2F%2Fdeveloper.android.com%2Fcourses%2Fpathways%2Fandroid-basics-compose-unit-4-pathway-2%23codelab-https%3A%2F%2Fdeveloper.android.com%2Fcodelabs%2Fbasic-android-kotlin-compose-test-cupcake#4

In which task and step of the codelab can this issue be found?
In the task number 5, almost at the end of it

Describe the problem
Its not a big problem but the tests solutions the codelabs tells you to do on your own differ from the solution cod, for example:

See if you can write the tests to verify the following navigation states. Try implementing them on your own before looking at the solution.

• Navigating to the Start screen by clicking the Up button from the Flavor screen
  (For this example you navigate from Flavor Screen to Start Screen, going back in the navigation)

@test
fun cupcakeNavHost_clickNextOnFlavorScreen_navigatesToPickupScreen() {
navigateToFlavorScreen()
composeTestRule.onNodeWithStringId(R.string.next)
.performClick()
navController.assertCurrentRouteName(CupcakeScreen.Pickup.name)
}

(The solution code provided navigates from Flavor Screen to PickUp Screen, goig up in the navigation)

As i said is not a big deal and only occurs with 2 of the test solutions

Steps to reproduce?

1. Go to...
2. Click on...
3. See error...

Versions
Android Studio version:
API version of the emulator:

Additional information
Include screenshots if they would be useful in clarifying the problem.