New code.

app/Providers/TestingServiceProvider.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace FireflyIII\Providers;
+
+
+use Illuminate\Support\ServiceProvider;
+
+/**
+ * Class TestingServiceProvider
+ *
+ * @package FireflyIII\Providers
+ */
+class TestingServiceProvider extends ServiceProvider {
+
+    /**
+     * Register the service provider.
+     *
+     * @return void
+     */
+    public function register()
+    {
+        if ($this->app->environment() == 'testing')
+        {
+            $this->app['config']['session.driver'] = 'native';
+        }
+    }
+
+}