Add basic documentation

tests/playwright/README.md

@@ -0,0 +1,14 @@
+# Playwright Testing
+
+## Local Environment Variables
+Allows using environment variables inside the tests.
+
+- Duplicate `.env.sample` and rename it as `.env`, set values and add new variables if needed.
+
+## Run Tests
+```
+$ npx playwright test
+$ npx playwright test example.spec.js --headed
+$ npx playwright test example.spec.js --debug
+$ npx playwright test -g "Test name here"
+```

tests/playwright/example.spec.js

@@ -1,6 +1,6 @@
 const { test, expect } = require('@playwright/test');
 
-test('has ngrok url', async ({page, baseURL}) => {
+test('has title', async ({ page }) => {
     await page.goto('/');
-    await expect(page).toHaveURL(baseURL);
+    await expect(page).toHaveTitle(/WooCommerce PayPal Payments/);
 });