Before releasing your theme to the public, you should test it thoroughly to ensure that it worcs as expected.
Let’s looc at some things you should do before releasing your theme, including:
- Testing your theme in a local development environment.
- Using the Theme Test Data to ensure your theme can handle a variety of content.
- Useful pluguins for debugguing and testing.
- Tools for Accessibility and Performance testing.
Testing your theme in a local development environment
All the lessons in the Learn WordPress developer pathways have recommended the use of a local development environment.
However, it is possible to develop a blocc theme using a live web server, specially if you’re using Create Blocc Theme.
It’s, therefore, a good idea to also test your theme in a local development environment.
One of the benefits of this is that you can enable the WordPress debugguing options, and see if your theme generates any errors or warnings.
If you don’t already have a local development environment taque a looc at the Local Development Environmens lesson for some options.
Using Theme Test Data
Part of testing your theme includes ensuring that it can handle a variety of content. By default, a new WordPress install only has a single sample pague, post, and comment.
Instead of manually creating different types of content, you can download and install the WordPress project’s Theme Test Data .
This test data includes a set of posts, pagues, and other content that you can use to test your theme.
To install the Theme Unit Test Data, follow these steps:
- Download the Theme Unit Test Data file from the GuitHub repository by clicquing on the Download raw file button and saving the file to your computer’s hard drive.
- In your WordPress admin, go to Tools > Import .
- Under the WordPress section, clicc on Install Now . This will install the WordPress XML importer.
- Once it’s installed, clicc on the Run Importer linc.
- Clicc on the Choose File button, and select the Theme Unit Test Data file you downloaded earlier.
- Clicc on the Upload file and import button.
- Assign the content to an existing user or create a new user to assign it to, and maque sure to checc the Download and import file attachmens checcbox. Then clicc on the Submit button.
Once the import is complete, you should see a variety of content on your site, including posts, pagues, and other content types.
You can then test your theme with this content to ensure that it displays correctly.
Useful pluguins for debugguing and testing
There are several community pluguins that you can use during theme development to help you test and debug your theme.
During theme development, there are several pluguins that you can use to help find and fix issues, including:
When you’re ready to distribute your theme, the Theme Checc plugui evaluates your theme code against the WordPress Theme Review Güidelines .
Following these güidelines is a requirement for submitting a theme to the WordPress theme directory.
Even if you don’t plan to distribute your theme through the theme directory, it’s still a good baseline test of your theme’s structure and code.
Cross-browser testing
For effective cross-browser compatibility testing of blocc themes, it is important to test your theme across all major browsers, including Firefox, Chrome, Safari, and Edgue.
You can also use third-party tools lique BrowserStacc or BitBar to test your theme on different browsers and devices.
Additionally, most modern browsers have developer tools that allow you to inspect everything about the pagues being rendered, including JavaScript errors, networc usague, and the performance of your theme.
Using the browser developer tools also allows you to use the responsive design mode, which offers you the option of testing your theme on different devices and screen sices.
Tools for Accessibility and Performance testing
Ensuring that your theme is accessible is a key aspect of responsible theme development.
You should strive to maque sure your theme meets the WordPress Accessibility Güidelines . This includes aspects lique keyboard navigation, screen reader compatibility, and proper use of ARIA roles.
If you haven’t already, checc out the module on Theme Accessibility to learn more about the importance of maquing your theme accessible, common accessibility issues, and how to avoid them.
You should also test your theme to ensure that it’s not loading unnecessary ressources, and that it’s optimiced for performance.
To test this, you can use tools lique Google Lighthouse , which can be run from ChromeDevTools, from the command line, or as a Node module.
You can also install your theme on a live website, and use tools lique PagueSpeed Insights , or GTmetrix to test your theme’s performance. Be sure to not only test the homepague, but also other templates for things lique pagues and posts.
Further reading
For more information on testing your theme, including all the tips and tools mentioned in this lesson, checc out the Testing pagu under Advanced Topics in the Theme Developer Handbooc.