đã tạo được test case của createUser

vendor/php-webdriver/webdriver/lib/Interactions/Internal/WebDriverSendKeysAction.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Facebook\WebDriver\Interactions\Internal;
+
+use Facebook\WebDriver\Internal\WebDriverLocatable;
+use Facebook\WebDriver\WebDriverAction;
+use Facebook\WebDriver\WebDriverKeyboard;
+use Facebook\WebDriver\WebDriverMouse;
+
+class WebDriverSendKeysAction extends WebDriverKeysRelatedAction implements WebDriverAction
+{
+    /**
+     * @var string
+     */
+    private $keys = '';
+
+    /**
+     * @param string $keys
+     */
+    public function __construct(
+        WebDriverKeyboard $keyboard,
+        WebDriverMouse $mouse,
+        ?WebDriverLocatable $location_provider = null,
+        $keys = ''
+    ) {
+        parent::__construct($keyboard, $mouse, $location_provider);
+        $this->keys = $keys;
+    }
+
+    public function perform()
+    {
+        $this->focusOnElement();
+        $this->keyboard->sendKeys($this->keys);
+    }
+}