Lifecycle-aware components such as fragments, provide first-class coroutine support for logical scopes in your app along with an interoperability layer with LiveData. A LifecycleScope is defined for each Lifecycle object. Any coroutine launched in this scope is canceled when the Lifecycle owner is destroyed.

LifecycleScope is a CoroutineScope.

A rule is a way to run code before and after the execution of a test in JUnit.