sfdx-lwc-jest VS ecars

For those who are familiar with testing in Javascript but not in APEX or vice-versa, here are some key things to note. The Apex language comes with system methods for writing apex unit tests classes. For JavaScript, there are a number of different testing frameworks but Salesforce recommends using Jest for Lightning Web Components and LWC OSS because of its popularity, ease-of-use, and open-source framework. Jest for Lightning Web Components is available at the sfdx-lwc-jest Github repo. The following table draws some comparisons between the frameworks.

For the eCars app that we’re building, the activity will be to write an APEX test class for the PdfCreateService that we used in the prior session to call a Heroku microservice for generating PDF documents. The eCars code can be found at the linked Github repo and I have also included a link to the specific PdfCreateService class. If you have not gone through the exercise of pulling the code into a Salesforce Developer org or a scratch org, you’ll want to review some of the previous articles to take that pre-requisite step or follow the instructions in the Github repo on how to clone and deploy the application.

The Javascript car configurator app we are going to test can be found on the eCars app Github repository. If you’ve been following along with this series, then you should have already done some previous setup work installing the repo in VS Code and deploying it to a Salesforce scratch org.

I'll share a step-by-step tutorial building the app, what I've learned, some of the highlights, and my take on some of the content. You can find all the code for the project here.

To start, let’s review the steps for Automated Deployment as also listed on the readme section in the Github repo. Julian has created a script (a Node.js program that will make this process easier) to get this up and running in the Salesforce and Heroku platforms. All of the installation pre-reqs, keys, and steps to configure your operating system before we move forward with deployment can be found here.