Add comprehensive testing framework for both single site and multisite WordPress environments

.github/workflows/wordpress-tests.yml

@@ -0,0 +1,68 @@
+name: WordPress Environment Tests
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  single-site-test:
+    name: Single Site Tests
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v3
+    
+    - name: Setup Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: '16'
+        cache: 'npm'
+    
+    - name: Install dependencies
+      run: npm ci
+    
+    - name: Install wp-env
+      run: npm install -g @wordpress/env
+    
+    - name: Setup WordPress Single Site
+      run: |
+        chmod +x bin/setup-test-env.sh
+        bash bin/setup-test-env.sh single
+    
+    - name: Install Cypress
+      run: npm install cypress
+    
+    - name: Run Cypress tests
+      run: npm run test:single:headless
+
+  multisite-test:
+    name: Multisite Tests
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v3
+    
+    - name: Setup Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: '16'
+        cache: 'npm'
+    
+    - name: Install dependencies
+      run: npm ci
+    
+    - name: Install wp-env
+      run: npm install -g @wordpress/env
+    
+    - name: Setup WordPress Multisite
+      run: |
+        chmod +x bin/setup-test-env.sh
+        bash bin/setup-test-env.sh multisite
+    
+    - name: Install Cypress
+      run: npm install cypress
+    
+    - name: Run Cypress tests
+      run: npm run test:multisite:headless