Android Development Android Testing

Question 1

Which testing framework is used for writing unit tests in Android projects?

Accepted Answer

JUnit

Answer

JUnit is the standard testing framework for writing and running unit tests in Android and Java/Kotlin projects.

Question 2

What is the purpose of Espresso in Android testing?

Accepted Answer

To write UI instrumentation tests that interact with the app UI

Answer

Espresso is Google's UI testing framework that allows you to write automated UI tests that interact with and assert the state of your app's UI.

Question 3

What is a unit test in Android development?

Accepted Answer

A test that validates a single function or class in isolation without Android framework dependencies

Answer

Unit tests validate individual units of code like functions or classes in isolation, typically running on the JVM without Android dependencies.

Question 4

What is the difference between unit tests and instrumentation tests in Android?

Accepted Answer

Unit tests run on JVM; instrumentation tests run on an Android device or emulator

Answer

Unit tests run locally on the JVM and are fast, while instrumentation tests run on an Android device/emulator and can access the Android framework.

Question 5

Which library is used for mocking dependencies in Android unit tests?

Accepted Answer

Mockito

Answer

Mockito is a popular mocking framework that creates fake implementations of dependencies, allowing you to isolate the code under test.

Android Development Practice Test