Rails 5 Test Prescriptions

What You’ve Done

In this chapter we looked at using integration-testing tools, specifically Capybara, to test JavaScript from outside the client-side code. If you’re getting the sense that using JavaScript drivers with Capybara is flaky, brittle, and frustrating, the only thing I can say is that you left out slow. I recommend using those drivers sparingly. Handle testing client interactions in JavaScript to the extent possible, and use server-side testing to specify what data is sent to the client.

Now let’s look at how you can unit-test that JavaScript.

Footnotes

[30]

https://sites.google.com/a/chromium.org/chromedriver/getting-started

[31]

https://webpack.github.io

[32]

https://github.com/rails/webpacker

[33]

https://yarnpkg.com

[34]

http://ddollar.github.io/foreman ...