at the end of the day, it was inevitable

behat/Command/Util/CommandTestFactory.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace Command\Util;
+
+use Symfony\Bundle\FrameworkBundle\Console\Application;
+use Symfony\Component\HttpKernel\KernelInterface;
+
+/**
+ * Class CommandTestFactory
+ * @package Command\Util
+ */
+class CommandTestFactory
+{
+
+    /**
+     * @var Application
+     */
+    private $application;
+
+    /**
+     * CommandRunner constructor.
+     *
+     * @param KernelInterface $kernel A KernelInterface instance.
+     */
+    public function __construct(KernelInterface $kernel)
+    {
+        $this->application = new Application($kernel);
+        // If don't set to false, application will call 'exit' after command was
+        // executed.
+        $this->application->setAutoExit(false);
+    }
+
+    /**
+     * Create new command instance.
+     *
+     * @param string $command Command name.
+     * @param array  $params  Command parameters.
+     *
+     * @return CommandTest
+     */
+    public function create($command, array $params = [])
+    {
+        return new CommandTest($this->application, $command, $params);
+    }
+}