đã tạo được test case của createUser

vendor/laravel/dusk/src/Keyboard.php

@@ -0,0 +1,114 @@
+<?php
+
+namespace Laravel\Dusk;
+
+use BadMethodCallException;
+use Illuminate\Support\Traits\Macroable;
+
+/**
+ * @mixin \Facebook\WebDriver\Remote\RemoteKeyboard
+ */
+class Keyboard
+{
+    use Macroable {
+        __call as macroCall;
+    }
+
+    /**
+     * The browser instance.
+     *
+     * @var \Laravel\Dusk\Browser
+     */
+    public $browser;
+
+    /**
+     * Create a keyboard instance.
+     *
+     * @param  \Laravel\Dusk\Browser  $browser
+     * @return void
+     */
+    public function __construct(Browser $browser)
+    {
+        $this->browser = $browser;
+    }
+
+    /**
+     * Press the key using keyboard.
+     *
+     * @return $this
+     */
+    public function press($key)
+    {
+        $this->pressKey($key);
+
+        return $this;
+    }
+
+    /**
+     * Release the given pressed key.
+     *
+     * @return $this
+     */
+    public function release($key)
+    {
+        $this->releaseKey($key);
+
+        return $this;
+    }
+
+    /**
+     * Type the given keys using keyboard.
+     *
+     * @param  string|array<int, string>  $keys
+     * @return $this
+     */
+    public function type($keys)
+    {
+        $this->sendKeys($keys);
+
+        return $this;
+    }
+
+    /**
+     * Pause for the given amount of milliseconds.
+     *
+     * @param  int  $milliseconds
+     * @return $this
+     */
+    public function pause($milliseconds)
+    {
+        $this->browser->pause($milliseconds);
+
+        return $this;
+    }
+
+    /**
+     * Dynamically call a method on the keyboard.
+     *
+     * @param  string  $method
+     * @param  array  $parameters
+     * @return mixed
+     *
+     * @throws \BadMethodCallException
+     */
+    public function __call($method, $parameters)
+    {
+        if (static::hasMacro($method)) {
+            return $this->macroCall($method, $parameters);
+        }
+
+        $keyboard = $this->browser->driver->getKeyboard();
+
+        if (method_exists($keyboard, $method)) {
+            $response = $keyboard->{$method}(...$parameters);
+
+            if ($response === $keyboard) {
+                return $this;
+            } else {
+                return $response;
+            }
+        }
+
+        throw new BadMethodCallException("Call to undefined keyboard method [{$method}].");
+    }
+}