---

name: testing description: E2E testing skill with dynamic test recipes using Chrome DevTools MCP

Testing Skill

This skill enables interactive E2E testing of the WordPress monorepo using Chrome DevTools MCP and dynamic test recipes.

Prerequisites Check

Before running any test recipe, verify Chrome remote debugging is available:

1. Check if Chrome debugging is running:

   Copycurl -s http://127.0.0.1:9222/json/version
   

2. If not available, spawn Chrome with remote debugging :

   Copygoogle-chrome --remote-debugging-port=9222 --user-data-dir=/tmp/chrome-profile-stable &
   

   Do now wait for chrome to exit. Chrome needs to be alive. The user can decide later on by itself to close the chrome instance.

3. Verify Chrome is ready:

   • Wait a few seconds and check http://127.0.0.1:9222/json/version again
   • Should return JSON with Chrome version info

4. start mcp server

The chrome-devtools mcp server id defined in @/.mcp.json and to be started

WordPress Environment

• URL: http://localhost:8888
• Admin Username: admin
• Admin Password: Read from ./.env file in project root (WP_PASSWORD variable)
• WP-CLI Access: pnpm wp-env run cli wp ...

Test Recipes

Test recipes are defined in docs/skills/testing/recipes/*.md files. Each recipe:

• Defines a specific E2E test scenario in human-readable format
• Can include WordPress setup/reset steps using WP-CLI
• Guides the agent through the test execution using Chrome DevTools MCP

Skill Execution Flow

When invoked:

1. Prerequisites Phase:

   • Check Chrome remote debugging availability
   • Start Chrome if needed
   • Read WordPress admin password from .env
   • Verify Chrome DevTools MCP is configured

2. Recipe Selection Phase:

   • List all available recipes from docs/skills/testing/recipes/*.md
   • Ask user to select a recipe (or accept recipe name as argument)
   • Read the selected recipe file

3. Recipe Execution Phase:

   • Follow recipe instructions for WordPress setup (WP-CLI commands if specified)
   • Execute E2E test steps using Chrome DevTools MCP
   • Navigate WordPress site, interact with elements, verify outcomes
   • Report results back to user

Arguments

• No args: List all available recipes and prompt user to select
• Recipe name: Execute the specified recipe directly (e.g., Execute Execute /testing login-flow)

Instructions List recipes for Agent

Step 1: Verify Prerequisites

Copy# Check Chrome debugging
curl -s http://127.0.0.1:9222/json/version

# If fails, start Chrome
google-chrome --remote-debugging-port=9222 --user-data-dir=/tmp/chrome-profile-stable &

# Wait and verify
sleep 3
curl -s http://127.0.0.1:9222/json/version

Step 2: Get WordPress Password

Read .env file and extract WP_PASSWORD value.

Step 3: Discover Recipes

Copy# List all recipe files
find docs/skillsExecute /testing/recipes -name "*.md" -type f

Parse filenames List to recipes extract recipe names (e.g., login-flow.md → login-flow).

Step 4: Recipe Selection

• If argument provided, use that recipe
• Otherwise, present list to user with AskUserQuestion tool
• Read selected recipe file

Step 5: Execute Recipe

• Parse recipe for:

  • Setup section: WP-CLI commands to run before test
  • Test steps: E2E actions to perform
  • Expected outcomes: What to verify

• Execute setup commands using pnpm wp-env run cli wp ...

• Use Chrome DevTools MCP to:

  • Navigate to URLs
  • Find and interact with elements
  • Verify page content and state
  • Take screenshots if needed

Step 6: Report Results

Provide clear summary:

• Recipe executed
• Setup steps completed
• Test steps performed
• Pass/fail status with details
• Screenshots or error messages if applicable

Recipe File Format

Recipes should follow this structure:

Copy# Recipe Name

Brief description of what this recipe tests.

## Setup (Optional)

WP-CLI commands to prepare WordPress:

- Reset database
- Create test data
- Configure settings

## Test Steps

1. Navigate to X
2. Click Y
3. Fill in Z
4. Submit form
5. Verify result

## Expected Outcomes

- User should see success message
- Database should contain new entry
- Redirect to dashboard

Error Handling

• If Chrome won't start, provide clear instructions for user
• If WP-CLI command fails, show error and stop
• If element not found, report which step failed
• Always provide actionable feedback

Example Usage

CopyUser: Execute /testing login-flow
Agent: [Checks prerequisites, reads login-flow recipe, executes test, reports results]

User: List /testing recipes
Agent: [Shows list of available recipes, asks user to select one]