Describe the use of Espresso for UI testing in Android. Write a test case to verify the behavior of a button click that changes the text of a TextView.

Espresso is a widely used testing framework in Android that allows developers to write concise, reliable, and readable UI tests for Android applications. Developed by Google, Espresso is part of the Android Testing Support Library and is primarily used to validate the correctness of UI components and user interactions. It is highly suitable for functional testing within an Android application because it enables tests to simulate user behavior such as clicking buttons, entering text, swiping, and scrolling, and then verifying that the app reacts as expected.

Espresso synchronizes test actions with the user interface of the application, ensuring that UI interactions are only executed when the app is idle. This is an important feature __________ ________ _________ _________ __________ __________ _____.
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