đã tạo được test case của createUser

vendor/php-webdriver/webdriver/lib/Exception/InvalidSessionIdException.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace Facebook\WebDriver\Exception;
+
+/**
+ * Occurs if the given session id is not in the list of active sessions, meaning the session either does not exist
+ * or that it’s not active.
+ */
+class InvalidSessionIdException extends WebDriverException
+{
+}