We open Android Studio, write some Kotlin code, then run an Emulator to ensure the code worked. Does it perform as expected? If so, then we move on to the next bug or feature in the queue. But is there a way to speed this process up? Absolute.
Welcome to Test-Driven Development, or TDD for short. View this video to catch up on all things TDD with Espresso.
Please leave questions in the YouTube comments and I will respond.