---
layout: page
title: 'Test Driven Drupal: The Book'
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Having [given talks][1] and [written blog posts][0] about automated testing in Drupal, I’m currently in the planning phase of a book and potentially some accompanying screencasts about it, focussing on Drupal 8.

I’m still thinking about what use-cases to cover and examples to include, but here are some of the things I’m considering:

- What things to test, and what not to test
- The different types of available tests, and when to use each
- How to write testable code
- What happens when I run a test?
- How to run tests in the Drupal UI
- How to run tests with the `run-tests.sh` script
- How to install, configure and run tests with PHPUnit in Drupal 8
- Viewing HTML from run tests
- How to write your first test
- Debugging tests
- How to organise your test files
- Selecting the right base class and using test traits
- Writing your own base test classes, traits and assertions
- Managing dependencies for your tests (fields, configuration)
- Creating users, checking access with roles and permissions
- Creating pages and blocks with Views and testing the output
- Creating pages with routes and controllers and testing the output
- Testing custom plugins
- Testing queuing items and processing queues
- Testing sending emails
- Testing custom Twig filters and functions
<!-- - Testing data migrations -->
<!-- - Building and testing APIs using RESTful web services module -->
- Running tests as part of your continuous integration pipeline

I’ll most likely be publishing it via Leanpub, and will be sending free chapters, early-bird discounts and links to screencasts and blog posts as I write the book to subscribers of the mailing list.

If you have questions or would like to suggest something for me to include in the book, please <a href="mailto:{{ page.contact_email }}">contact me</a>.
## Mailing List

Enter your email address to subscribe to the Test Driven Drupal mailing list.
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[0]: {{site.url}}/blog/tags/testing
[1]: {{site.url}}/talks/tdd-test-driven-drupal
[2]: {{site.url}}/contact