Book Image

Modern Android 13 Development Cookbook

By : Madona S. Wambua
5 (1)
Book Image

Modern Android 13 Development Cookbook

5 (1)
By: Madona S. Wambua

Overview of this book

Android is a powerful operating system widely used in various devices, phones, TVs, wearables, automobiles, and more. This Android cookbook will teach you how to leverage the latest Android development technologies for creating incredible applications while making effective use of popular Jetpack libraries. You’ll also learn which critical principles to consider when developing Android apps. The book begins with recipes to get you started with the declarative UI framework, Jetpack Compose, and help you with handling UI states, Navigation, Hilt, Room, Wear OS, and more as you learn what's new in modern Android development. Subsequent chapters will focus on developing apps for large screens, leveraging Jetpack’s WorkManager, managing graphic user interface alerts, and tips and tricks within Android studio. Throughout the book, you'll also see testing being implemented for enhancing Android development, and gain insights into harnessing the integrated development environment of Android studio. Finally, you’ll discover best practices for robust modern app development. By the end of this book, you’ll be able to build an Android application using the Kotlin programming language and the newest modern Android development technologies, resulting in highly efficient applications.
Table of Contents (15 chapters)

Writing tests for your Paging Source

Writing tests for your implementations is crucial. We will write unit tests for our PagingSource implementation in this recipe to test our logic. Some tests that might be worth writing are checking when news Paging load failure happens.

We can also test the success state and more. You can follow the pattern to write tests for your project or use case.

Getting ready

To follow this recipe step by step, you need to have followed the Implementing the Jetpack Paging library recipe, and you need to use the PagingJetpackExample project.

How to do it…

Open PagingJetpackExample and follow along with this project to add unit tests:

  1. Add the following testing libraries to your build.gradle app:
    testImplementation 'org.assertj:assertj-core:3.x.x'
    testImplementation "org.mockito:mockito-core:3.x.x"
    testImplementation 'Androidx.arch.core:core-testing:2.x.x'
    testImplementation 'org.jetbrains.kotlinx:kotlinx...