Code coverage in SwiftUI

Even when you separate business logic code from your SwiftUI views the previews and also view bodies seems both to count for the unit test code coverage. I read many articles in the internet about how to test SwiftUI code and archive good code coverage. But they all seem not to be the perfect solution for this task. Is there any good guide for unit and ui testing SwiftUI code that Apple recommends for their apps?

Code coverage in SwiftUI
 
 
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