Book Image

Salesforce Lightning Platform Enterprise Architecture - Third Edition

By : Andrew Fawcett
Book Image

Salesforce Lightning Platform Enterprise Architecture - Third Edition

By: Andrew Fawcett

Overview of this book

Salesforce Lightning provides a secure and scalable platform to build, deploy, customize, and upgrade applications. This book will take you through the architecture of building an application on the Lightning platform to help you understand its features and best practices, and ensure that your app keeps up with your customers’ increasing needs as well as the innovations on the platform. This book guides you in working with the popular aPaaS offering from Salesforce, the Lightning Platform. You’ll see how to build and ship enterprise-grade apps that not only leverage the platform's many productivity features, but also prepare your app to harness its extensibility and customization capabilities. You'll even get to grips with advanced application architectural design patterns such as Separation of Concerns, Unit Testing and Dependency Integration. You will learn to use Apex and JavaScript with Lightning Web Components, Platform Events, among others, with the help of a sample app illustrating patterns that will ensure your own applications endure and evolve with the platform. Finally, you will become familiar with using Salesforce DX to develop, publish, and monitor a sample app and experience standard application life cycle processes along with tools such as Jenkins to implement CI/CD. By the end of this book, you will have learned how to develop effective business apps and be ready to explore innovative ways to meet customer demands.
Table of Contents (17 chapters)

Unit testing with Lightning Web Components

In this section, we are going to build a unit test for the Race Setup Lightning Web Component. This component has a number of dependencies that need to be mocked in order to build a successful unit test that covers the component's HTML and JavaScript code. Here is a reminder of what the component looks like:

When the user selects drivers and clicks Add Drivers, a confirmation toast message is shown:

The Race Setup component uses a lightning-table child component defined in its HTML and methods from an Apex Controller RaceSetupComponentController class defined in its JavaScript controller. Lightning Web Components unit tests focus solely on the logic directly in the Race Setup component code (raceSetup.html and raceSetup.js) and no other concerns, thus, we will focus on testing the following behaviors:

  • When the component has...