Unit Testing in Android

Introduction

Unit tests are the smallest tests in Android. They’re used to test a method or class in isolation. If the method or class under testing has dependencies, we can provide mock implementations for them so that external factors don’t impact the test result.

In this lesson, we’ll learn how to set up and use the JUnit testing framework for unit testing in Android.

Gradle dependencies

We need to add the JUnit library dependency in the app/build.gradle file to start unit testing in our app.