Fixes #4673

docs/guide/test-acceptance.md

@@ -7,5 +7,20 @@ Acceptance Tests
 - https://github.com/yiisoft/yii2/blob/master/apps/advanced/README.md#testing
 - https://github.com/yiisoft/yii2/blob/master/apps/basic/tests/README.md
 
-How to run php-server
----------------------
+How to run webserver
+--------------------
+
+In order to perform acceptance tests you need a web server. Since PHP 5.4 has built-in one, we can use it. For the basic
+application template it would be:
+
+```
+cd web
+php -S localhost:8080
+```
+
+In order for the tests to work correctly you need to adjust `TEST_ENTRY_URL` in `_bootstrap.php` file. It should point
+to `index-test.php` of your webserver. Since we're running directly from its directory the line would be:
+
+```php
+defined('TEST_ENTRY_URL') or define('TEST_ENTRY_URL', '/index-test.php');
+```