Running Tests: Providing Support for JavaScript

Learn to set up testing with JavaScript support.

We'll cover the following

- Running tests that rely on JavaScript
  - Modify index.html.erb
- - Modify application.html.erb
- - Adding scenario to test JavaScript behavior
- Driver required to run specs
  - Selenium configurations
- - Run Chrome with Docker
- - ❓Quiz
- - Configure Capybara
    - Why this specific URL?

Running tests that rely on JavaScript

OK, let’s take this up a notch. Setting up testing with JavaScript support is not going to be so straightforward with Docker. But you are ready to handle it.

Imagine that we have an enhanced version of our /welcome page that has extra behavior that only works with JavaScript enabled. In fact, when functioning correctly, this JavaScript literally adds the message “ENHANCED!” on the page.

Modify index.html.erb

Here is a rather crude implementation in app/views/welcome/index.html.erb:

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Introduction

A Brave New World

Running a Rails App in a Container

Fine-Tuning Our Rails Image

Describing Our App Declaratively with Docker Compose

Beyond the App: Adding Redis

Docker for Rails Developer—Exam 1

Adding a Database: Postgres

Playing Nice with JavaScript

Testing in a Dockerized Environment

Advanced Gem Management

Some Minor Irritations

Docker for Rails Developer—Exam 2

The Production Landscape

Preparing for Production

A Production-Like Playground

Deploying to the Cloud

Docker for Rails Developer - Exam 3

Closing Thoughts and Next Steps

APPENDIX

Running Tests: Providing Support for JavaScript

Running tests that rely on JavaScript

Modify index.html.erb