WordPress Testing

Unit Testing

• Karen NA Gupta. Unit Testing WordPress Plugins with PHPUnit. wpmudev, 2017.
• Camden Segal. Unit Testing Your Plugins. webdevstudios, 2014.
• David Hayes. How to Start Unit Testing WordPress Plugins. wpshout, 2018.
• Collins Agbonghama. An Introduction to Automated Testing of WordPress Plugins with PHPUnit. smashing magazine, 2017.
  • Good introductory article, includes directions on writing a small plugin, creating tests, and using phpunit.
• Pippin Williamson. Unit Tests for WordPress Plugins Series. 2014-2015.
  • 1. An Introduction – Explains what they are, why they matter, and gives a brief example.
  • 2. Setting Up Our Testing Suite – Defines “testing suite”, installing PHPUnit and WP-CLI, how to use WP-CLI to setup unit tests, defines “tests” and “assertions”.
  • 3. Writing Tests – Why/how to segment tests across multiple files, demonstrates writing several different tests.
  • 4. The Factory – Discusses using WP_UnitTest_Factory to create sample data. Particularly demonstrates how to create a sample post / many sample posts / a sample user, creating a custom factory class.
• Carl Alexander.
  • Introduction to WordPress Unit Testing. 2015.
    • Explains the why of unit testing, discusses requirements including OS, PHP versions, Composer, PHPUnit, and WP-CLI. It also discusses PHP-Mock, test doubles, using a prefix helper function, and assertions.
  • How Do You Start Unit Testing Existing WordPress Code? 2019.
    • More high level, conceptual. Discusses code complexity, refactoring, unit testing, code reviews, and code coverage tools.
• Zack Grossbart. Writing Unit Tests for WordPress Plugins. smashing magazine, 2012.
• Tom McFarlin. The Beginner’s Guide to Unit Testing: What is Unit Testing? tutsplus, 2012.
  • Part 3: The Theory of Unit Testing.
• Tom McFarlin. Writing Unit Tests with PHPUnit. 2018.
  • Part 1: The Set Up.
  • Part 2: The Tear Down.
  • Part 3: XML Configuration.
• Tom McFarlin.
  • A Quick Note on Unit Testing Code in WordPress Projects. 2018
  • Architecture and Unit Testing WordPress Code. 2016.
  • Unit Testing Existing Code in WordPress Projects. 2016.
• Giuseppe Mazzapica. PHP Unit Tests without WordPress Loading. inpsyde, 2017.
  • Part 1
  • Part 2
• WordPress Plugin Unit Test with BrainMonkey and PHPUnit. swas.io, 2018.
• Cal Evans. Unit Testing WordPress Plugins. pantheon, 2014.
• David Aguilera. Introduction to Unit Testing in WordPress – PHPUnit. nelio, 2016.
• Will Haynes. Unit Testing Themes and Plugins in WordPress. inn labs, 2014.
• Thorsten Frommen. An Introduction to Unit Testing (for WordPress). 2017.
• Adding Unit Tests to a WordPress Plugin via VVV and PHPUnit. tilcode, 2019.
• Codeception for WordPress.*
• Unit-Testing with Mocks in WordPress. yoast, 2019.
• Jonathan Bossenger. Unit Tests for Your WordPress Plugin Using WP CLI and PHPUnit. 2019.
• Lee Blue. Unit Testing WordPress Plugins.

Usability

• Brian Jackson. The Ultimate Step-by-Step Guide on Website Usability Testing. kinsta, 2020.
• Riya Sander. How to Test Usability of a Website Before Launch. torque, 2019.

Other

• Carl Alexander. Introduction to WordPress Acceptance Testing. 2018.
• Tom McFarlin.
  • Start Black-Box Testing WordPress Projects. 2016.
  • Testing in WordPress: Scenarios and Spreadsheets. 2014.
  • A Software Test Plan for WordPress Work. 2014.
• Josh Pollock. Testing jQuery with Jest in WordPress Development. torque, 2019.
• Josh Pollock. Adopting TDD for an Existing Plugin. torque, 2019.

Sandboxing

• WP Safe Updates – In cases where a host doesn’t offer a staging environment, WP Safe Updates create a sandbox environment so that plugins can be tested before upgrading.
  • Sarah Gooding. WP Safe Updates Plugin. WP Tavern, 2016.

Visual

• DT Baker. Automatic Visual Regression Testing on WordPress Themes. 2017.

Cross-Browser Compatibility

• Jenni McKinnon. Essential Tools for Testing Cross-Browser Compatibility on Your WordPress Site. wpmudev, 2016.

Tooling

• Browserstack
• FakerPress – Creates test data for WP install.
• 10up’s WP Acceptance.