Force test cases using background commands to handle setting up the filesystem

lib/private/command/fileaccess.php

@@ -11,8 +11,12 @@ namespace OC\Command;
 use OCP\IUser;
 
 trait FileAccess {
-	protected function getUserFolder(IUser $user) {
+	protected function setupFS(IUser $user){
 		\OC_Util::setupFS($user->getUID());
+	}
+
+	protected function getUserFolder(IUser $user) {
+		$this->setupFS($user);
 		return \OC::$server->getUserFolder($user->getUID());
 	}
 }

lib/private/command/queuebus.php

@@ -15,7 +15,7 @@ class QueueBus implements IBus {
 	/**
 	 * @var (ICommand|callable)[]
 	 */
-	private $queue;
+	private $queue = [];
 
 	/**
 	 * Schedule a command to be fired

tests/lib/testcase.php

@@ -23,6 +23,7 @@
 namespace Test;
 
 use OC\Command\QueueBus;
+use OC\Files\Filesystem;
 use OCP\Security\ISecureRandom;
 
 abstract class TestCase extends \PHPUnit_Framework_TestCase {
@@ -34,7 +35,7 @@ abstract class TestCase extends \PHPUnit_Framework_TestCase {
 	protected function setUp() {
 		// overwrite the command bus with one we can run ourselves
 		$this->commandBus = new QueueBus();
-		\OC::$server->registerService('AsyncCommandBus', function(){
+		\OC::$server->registerService('AsyncCommandBus', function () {
 			return $this->commandBus;
 		});
 	}
@@ -190,6 +191,20 @@ abstract class TestCase extends \PHPUnit_Framework_TestCase {
 	 * Run all commands pushed to the bus
 	 */
 	protected function runCommands() {
+		// get the user for which the fs is setup
+		$view = Filesystem::getView();
+		if ($view) {
+			list(, $user) = explode('/', $view->getRoot());
+		} else {
+			$user = null;
+		}
+
+		\OC_Util::tearDownFS(); // command cant reply on the fs being setup
 		$this->commandBus->run();
+		\OC_Util::tearDownFS();
+
+		if ($user) {
+			\OC_Util::setupFS($user);
+		}
 	}
 }