đã tạo được test case của createUser

vendor/php-webdriver/webdriver/lib/WebDriverHasInputDevices.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace Facebook\WebDriver;
+
+/**
+ * Interface implemented by each driver that allows access to the input devices.
+ */
+interface WebDriverHasInputDevices
+{
+    /**
+     * @return WebDriverKeyboard
+     */
+    public function getKeyboard();
+
+    /**
+     * @return WebDriverMouse
+     */
+    public function getMouse();
+}