đã tạo được test case của createUser

vendor/php-webdriver/webdriver/lib/WebDriverKeyboard.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Facebook\WebDriver;
+
+interface WebDriverKeyboard
+{
+    /**
+     * Send a sequence of keys.
+     *
+     * @param string $keys
+     * @return $this
+     */
+    public function sendKeys($keys);
+
+    /**
+     * Press a key
+     *
+     * @see WebDriverKeys
+     * @param string $key
+     * @return $this
+     */
+    public function pressKey($key);
+
+    /**
+     * Release a key
+     *
+     * @see WebDriverKeys
+     * @param string $key
+     * @return $this
+     */
+    public function releaseKey($key);
+}