Add currency tests.

app/Http/Requests/CurrencyFormRequest.php

@@ -21,6 +21,18 @@ class CurrencyFormRequest extends Request
         return Auth::check();
     }
 
+    /**
+     * @return array
+     */
+    public function getCurrencyData()
+    {
+        return [
+            'name'   => $this->get('name'),
+            'code'   => $this->get('code'),
+            'symbol' => $this->get('symbol'),
+        ];
+    }
+
     /**
      * @return array
      */