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# WordPress Playground Testing
This document explains how to use WordPress Playground for testing our plugin.
## What is WordPress Playground?
[WordPress Playground](https://wordpress.org/playground/) is a project that runs WordPress entirely in the browser using WebAssembly. This means:
* No server required - WordPress runs in the browser
* Fast startup times
* Isolated testing environment
* Works well with CI/CD pipelines
## Setting Up WordPress Playground Locally
1. Install the WordPress Playground CLI:
```bash
npm install -g @wordpress/playground-tools
```
2. Start WordPress Playground with our blueprint:
```bash
wp-playground start --blueprint playground/blueprint.json --port 8888
```
3. Open your browser and navigate to http://localhost:8888
## Running Tests with WordPress Playground
We have two blueprints for testing:
1. `playground/blueprint.json` - For single site testing
2. `playground/multisite-blueprint.json` - For multisite testing
To run tests with WordPress Playground:
1. Start WordPress Playground with the appropriate blueprint:
```bash
# For single site testing
wp-playground start --blueprint playground/blueprint.json --port 8888
# For multisite testing
wp-playground start --blueprint playground/multisite-blueprint.json --port 8888
```
2. Run Cypress tests against WordPress Playground:
```bash
# For single site testing
npm run test:single:headless
# For multisite testing
npm run test:multisite:headless
```
## Customizing Blueprints
You can customize the blueprints to suit your testing needs. See the [WordPress Playground Blueprints documentation](https://wordpress.github.io/wordpress-playground/blueprints/) for more information.
## CI/CD Integration
We have a GitHub Actions workflow that uses WordPress Playground for testing. See `.github/workflows/playground-tests.yml` for more information.
## Performance Testing
We also use the [WP Performance Tests GitHub Action](https://github.com/marketplace/actions/wp-performance-tests) for performance testing. This action tests our plugin against various WordPress versions and PHP versions to ensure it performs well in different environments.