đã tạo được test case của createUser

vendor/php-webdriver/webdriver/lib/WebDriverSearchContext.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace Facebook\WebDriver;
+
+use Facebook\WebDriver\Exception\NoSuchElementException;
+
+/**
+ * The interface for WebDriver and WebDriverElement which is able to search for WebDriverElement inside.
+ */
+interface WebDriverSearchContext
+{
+    /**
+     * Find the first WebDriverElement within this element using the given mechanism.
+     *
+     * @throws NoSuchElementException If no element is found
+     * @return WebDriverElement
+     * @see WebDriverBy
+     */
+    public function findElement(WebDriverBy $locator);
+
+    /**
+     * Find all WebDriverElements within this element using the given mechanism.
+     *
+     * @return WebDriverElement[] A list of all WebDriverElements, or an empty array if nothing matches
+     * @see WebDriverBy
+     */
+    public function findElements(WebDriverBy $locator);
+}