diff --git a/phpBB/common.php b/phpBB/common.php
index 4f2c9ea272..fedf459888 100644
--- a/phpBB/common.php
+++ b/phpBB/common.php
@@ -47,7 +47,13 @@ if (!defined('PHPBB_INSTALLED'))
 
 	// Eliminate . and .. from the path
 	require($phpbb_root_path . 'phpbb/filesystem.' . $phpEx);
-	$phpbb_filesystem = new \phpbb\filesystem();
+	$phpbb_filesystem = new phpbb\filesystem(
+		new phpbb\symfony\request(
+			new phpbb\request\request()
+		),
+		$phpbb_root_path,
+		$phpEx
+	);
 	$script_path = $phpbb_filesystem->clean_path($script_path);
 
 	$url = (($secure) ? 'https://' : 'http://') . $server_name;
@@ -110,7 +116,8 @@ $db			= $phpbb_container->get('dbal.conn');
 request_var('', 0, false, false, $request); // "dependency injection" for a function
 
 // Create a Symfony Request object from our phpbb_request object
-$symfony_request = phpbb_create_symfony_request($request);
+$symfony_request = $phpbb_container->get('symfony_request');
+$phpbb_filesystem = $phpbb_container->get('filesystem');
 
 // Grab global variables, re-cache if necessary
 $config = $phpbb_container->get('config');
diff --git a/phpBB/config/services.yml b/phpBB/config/services.yml
index 5edaa6c0fc..f029ec40a3 100644
--- a/phpBB/config/services.yml
+++ b/phpBB/config/services.yml
@@ -169,6 +169,11 @@ services:
 
     filesystem:
         class: phpbb\filesystem
+        arguments:
+            - @symfony_request
+            - %core.root_path%
+            - %core.php_ext%
+            - %core.adm_relative_path%
 
     groupposition.legend:
         class: phpbb\groupposition\legend
@@ -252,16 +257,19 @@ services:
     request:
         class: phpbb\request\request
 
+    symfony_request:
+        class: phpbb_symfony_request
+        arguments:
+            - @request
+
     template:
         class: phpbb\template\twig\twig
         arguments:
-            - %core.root_path%
-            - %core.php_ext%
+            - @filesystem
             - @config
             - @user
             - @template_context
             - @ext.manager
-            - %core.adm_relative_path%
 
     template_context:
         class: phpbb\template\context
diff --git a/phpBB/includes/bbcode.php b/phpBB/includes/bbcode.php
index b6da41f9aa..f617b4b10a 100644
--- a/phpBB/includes/bbcode.php
+++ b/phpBB/includes/bbcode.php
@@ -126,13 +126,13 @@ class bbcode
 	*/
 	function bbcode_cache_init()
 	{
-		global $phpbb_root_path, $phpEx, $config, $user, $phpbb_extension_manager;
+		global $phpbb_root_path, $phpEx, $config, $user, $phpbb_extension_manager, $phpbb_filesystem;
 
 		if (empty($this->template_filename))
 		{
 			$this->template_bitfield = new bitfield($user->style['bbcode_bitfield']);
 
-			$template = new \phpbb\template\twig($phpbb_root_path, $phpEx, $config, $user, new phpbb_template_context(), $phpbb_extension_manager);
+			$template = new phpbb\template\twig\twig($phpbb_filesystem, $config, $user, new phpbb_template_context(), $phpbb_extension_manager);
 			$template->set_style();
 			$template->set_filenames(array('bbcode.html' => 'bbcode.html'));
 			$this->template_filename = $template->get_source_file_for_handle('bbcode.html');
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 03a4895433..53ee8c2512 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -7,8 +7,6 @@
 *
 */
 
-use Symfony\Component\HttpFoundation\Request;
-
 /**
 * @ignore
 */
@@ -1072,7 +1070,14 @@ function phpbb_clean_path($path)
 			global $phpbb_root_path, $phpEx;
 			require($phpbb_root_path . 'includes/filesystem.' . $phpEx);
 		}
-		$phpbb_filesystem = new \phpbb\filesystem();
+
+		$phpbb_filesystem = new phpbb\filesystem(
+			new phpbb\symfony\request(
+				new phpbb\request\request()
+			),
+			$phpbb_root_path,
+			$phpEx
+		);
 	}
 
 	return $phpbb_filesystem->clean_path($path);
@@ -2410,9 +2415,8 @@ function phpbb_on_page($template, $user, $base_url, $num_items, $per_page, $star
 */
 function append_sid($url, $params = false, $is_amp = true, $session_id = false)
 {
-	global $_SID, $_EXTRA_URL, $phpbb_hook;
+	global $_SID, $_EXTRA_URL, $phpbb_hook, $phpbb_filesystem;
 	global $phpbb_dispatcher;
-	global $symfony_request, $phpbb_root_path;
 
 	if ($params === '' || (is_array($params) && empty($params)))
 	{
@@ -2420,10 +2424,10 @@ function append_sid($url, $params = false, $is_amp = true, $session_id = false)
 		$params = false;
 	}
 
-	$corrected_path = $symfony_request !== null ? phpbb_get_web_root_path($symfony_request, $phpbb_root_path) : '';
-	if ($corrected_path)
+	// Update the root path with the correct relative web path
+	if ($phpbb_filesystem instanceof phpbb_filesystem)
 	{
-		$url = substr($corrected_path . $url, strlen($phpbb_root_path));
+		$url = $phpbb_filesystem->update_web_root_path($url);
 	}
 
 	$append_sid_overwrite = false;
@@ -2815,8 +2819,22 @@ function build_url($strip_vars = false)
 {
 	global $user, $phpbb_root_path;
 
+	$page = $user->page['page'];
+
+	// We need to be cautious here.
+	// On some situations, the redirect path is an absolute URL, sometimes a relative path
+	// For a relative path, let's prefix it with $phpbb_root_path to point to the correct location,
+	// else we use the URL directly.
+	$url_parts = parse_url($page);
+
+	// URL
+	if ($url_parts !== false && !empty($url_parts['scheme']) && !empty($url_parts['host']))
+	{
+		$page = $phpbb_root_path . $page;
+	}
+
 	// Append SID
-	$redirect = append_sid($user->page['page'], false, false);
+	$redirect = append_sid($page, false, false);
 
 	// Add delimiter if not there...
 	if (strpos($redirect, '?') === false)
@@ -2871,19 +2889,7 @@ function build_url($strip_vars = false)
 		$redirect .= ($query) ? '?' . $query : '';
 	}
 
-	// We need to be cautious here.
-	// On some situations, the redirect path is an absolute URL, sometimes a relative path
-	// For a relative path, let's prefix it with $phpbb_root_path to point to the correct location,
-	// else we use the URL directly.
-	$url_parts = @parse_url($redirect);
-
-	// URL
-	if ($url_parts !== false && !empty($url_parts['scheme']) && !empty($url_parts['host']))
-	{
-		return str_replace('&', '&', $redirect);
-	}
-
-	return $phpbb_root_path . str_replace('&', '&', $redirect);
+	return str_replace('&', '&', $redirect);
 }
 
 /**
@@ -5080,7 +5086,7 @@ function phpbb_build_hidden_fields_for_query_params($request, $exclude = null)
 function page_header($page_title = '', $display_online_list = true, $item_id = 0, $item = 'forum')
 {
 	global $db, $config, $template, $SID, $_SID, $_EXTRA_URL, $user, $auth, $phpEx, $phpbb_root_path;
-	global $phpbb_dispatcher, $request, $phpbb_container, $symfony_request;
+	global $phpbb_dispatcher, $request, $phpbb_container, $adm_relative_path;
 
 	if (defined('HEADER_INC'))
 	{
@@ -5240,7 +5246,8 @@ function page_header($page_title = '', $display_online_list = true, $item_id = 0
 	// This path is sent with the base template paths in the assign_vars()
 	// call below. We need to correct it in case we are accessing from a
 	// controller because the web paths will be incorrect otherwise.
-	$corrected_path = $symfony_request !== null ? phpbb_get_web_root_path($symfony_request, $phpbb_root_path) : '';
+	$phpbb_filesystem = $phpbb_container->get('filesystem');
+	$corrected_path = $phpbb_filesystem->get_web_root_path();
 	$web_path = (defined('PHPBB_USE_BOARD_URL_PATH') && PHPBB_USE_BOARD_URL_PATH) ? $board_url : $corrected_path;
 
 	// Send a proper content-language to the output
@@ -5322,7 +5329,7 @@ function page_header($page_title = '', $display_online_list = true, $item_id = 0
 		'SID'				=> $SID,
 		'_SID'				=> $_SID,
 		'SESSION_ID'		=> $user->session_id,
-		'ROOT_PATH'			=> $phpbb_root_path,
+		'ROOT_PATH'			=> $web_path,
 		'BOARD_URL'			=> $board_url,
 
 		'L_LOGIN_LOGOUT'	=> $l_login_logout,
@@ -5378,7 +5385,7 @@ function page_header($page_title = '', $display_online_list = true, $item_id = 0
 		'S_FORUM_ID'			=> $forum_id,
 		'S_TOPIC_ID'			=> $topic_id,
 
-		'S_LOGIN_ACTION'		=> ((!defined('ADMIN_START')) ? append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=login') : append_sid("index.$phpEx", false, true, $user->session_id)),
+		'S_LOGIN_ACTION'		=> ((!defined('ADMIN_START')) ? append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=login') : append_sid("{$phpbb_root_path}{$adm_relative_path}index.$phpEx", false, true, $user->session_id)),
 		'S_LOGIN_REDIRECT'		=> build_hidden_fields(array('redirect' => build_url())),
 
 		'S_ENABLE_FEEDS'			=> ($config['feed_enable']) ? true : false,
@@ -5705,83 +5712,3 @@ function phpbb_convert_30_dbms_to_31($dbms)
 
 	throw new \RuntimeException("You have specified an invalid dbms driver: $dbms");
 }
-
-/**
-* Create a Symfony Request object from \phpbb\request\request object
-*
-* @param \phpbb\request\request $request Request object
-* @return Request A Symfony Request object
-*/
-function phpbb_create_symfony_request(\phpbb\request\request $request)
-{
-	// If we have already gotten it, don't go back through all the trouble of
-	// creating it again; instead, just return it. This allows multiple calls
-	// of this method so we don't have to globalize $symfony_request in other
-	// functions.
-	static $symfony_request;
-	if (null !== $symfony_request)
-	{
-		return $symfony_request;
-	}
-
-	// This function is meant to sanitize the global input arrays
-	$sanitizer = function(&$value, $key) {
-		$type_cast_helper = new \phpbb\request\type_cast_helper();
-		$type_cast_helper->set_var($value, $value, gettype($value), true);
-	};
-
-	// We need to re-enable the super globals so we can access them here
-	$request->enable_super_globals();
-	$get_parameters = $_GET;
-	$post_parameters = $_POST;
-	$server_parameters = $_SERVER;
-	$files_parameters = $_FILES;
-	$cookie_parameters = $_COOKIE;
-	// And now disable them again for security
-	$request->disable_super_globals();
-
-	array_walk_recursive($get_parameters, $sanitizer);
-	array_walk_recursive($post_parameters, $sanitizer);
-
-	$symfony_request = new Request($get_parameters, $post_parameters, array(), $cookie_parameters, $files_parameters, $server_parameters);
-	return $symfony_request;
-}
-
-/**
-* Get a relative root path from the current URL
-*
-* @param Request $symfony_request Symfony Request object
-*/
-function phpbb_get_web_root_path(Request $symfony_request, $phpbb_root_path = '')
-{
-	global $phpbb_container;
-
-	static $path;
-	if (null !== $path)
-	{
-		return $path;
-	}
-
-	$path_info = $symfony_request->getPathInfo();
-	if ($path_info === '/')
-	{
-		$path = $phpbb_root_path;
-		return $path;
-	}
-
-	$filesystem = $phpbb_container->get('filesystem');
-	$path_info = $filesystem->clean_path($path_info);
-
-	// Do not count / at start of path
-	$corrections = substr_count(substr($path_info, 1), '/');
-
-	// When URL Rewriting is enabled, app.php is optional. We have to
-	// correct for it not being there
-	if (strpos($symfony_request->getRequestUri(), $symfony_request->getScriptName()) === false)
-	{
-		$corrections -= 1;
-	}
-
-	$path = $phpbb_root_path . str_repeat('../', $corrections);
-	return $path;
-}
diff --git a/phpBB/includes/functions_content.php b/phpBB/includes/functions_content.php
index 05d3c5fde2..5fa37f60bd 100644
--- a/phpBB/includes/functions_content.php
+++ b/phpBB/includes/functions_content.php
@@ -813,7 +813,7 @@ function bbcode_nl2br($text)
 */
 function smiley_text($text, $force_option = false)
 {
-	global $config, $user, $phpbb_root_path;
+	global $config, $user, $phpbb_filesystem;
 
 	if ($force_option || !$config['allow_smilies'] || !$user->optionget('viewsmilies'))
 	{
@@ -821,7 +821,7 @@ function smiley_text($text, $force_option = false)
 	}
 	else
 	{
-		$root_path = (defined('PHPBB_USE_BOARD_URL_PATH') && PHPBB_USE_BOARD_URL_PATH) ? generate_board_url() . '/' : $phpbb_root_path;
+		$root_path = (defined('PHPBB_USE_BOARD_URL_PATH') && PHPBB_USE_BOARD_URL_PATH) ? generate_board_url() . '/' : $phpbb_filesystem->get_web_root_path();
 		return preg_replace('#<!\-\- s(.*?) \-\-><img src="\{SMILIES_PATH\}\/(.*?) \/><!\-\- s\1 \-\->#', '<img class="smilies" src="' . $root_path . $config['smilies_path'] . '/\2 />', $text);
 	}
 }
diff --git a/phpBB/includes/functions_messenger.php b/phpBB/includes/functions_messenger.php
index e5eff46fe0..f8b01bc770 100644
--- a/phpBB/includes/functions_messenger.php
+++ b/phpBB/includes/functions_messenger.php
@@ -626,14 +626,14 @@ class messenger
 	*/
 	protected function setup_template()
 	{
-		global $config, $phpbb_root_path, $phpEx, $user, $phpbb_extension_manager;
+		global $config, $phpbb_filesystem, $user, $phpbb_extension_manager;
 
 		if ($this->template instanceof \phpbb\template\template)
 		{
 			return;
 		}
 
-		$this->template = new \phpbb\template\twig\twig($phpbb_root_path, $phpEx, $config, $user, new \phpbb\template\context(), $phpbb_extension_manager);
+		$this->template = new \phpbb\template\twig\twig($phpbb_filesystem, $config, $user, new \phpbb\template\context(), $phpbb_extension_manager);
 	}
 
 	/**
diff --git a/phpBB/install/index.php b/phpBB/install/index.php
index bdc2e86c53..2a3bb36bf6 100644
--- a/phpBB/install/index.php
+++ b/phpBB/install/index.php
@@ -244,7 +244,8 @@ $config = new \phpbb\config\config(array(
 	'load_tplcompile'	=> '1'
 ));
 
-$template = new \phpbb\template\twig\twig($phpbb_root_path, $phpEx, $config, $user, new \phpbb\template\context());
+$phpbb_filesystem = $phpbb_container->get('filesystem');
+$template = new \phpbb\template\twig\twig($phpbb_filesystem, $config, $user, new \phpbb\template\context());
 $paths = array($phpbb_root_path . 'install/update/new/adm/style', $phpbb_admin_path . 'style');
 $paths = array_filter($paths, 'is_dir');
 $template->set_custom_style('adm', $paths);
diff --git a/phpBB/phpbb/filesystem.php b/phpBB/phpbb/filesystem.php
index 827e9fb139..ae656ad6e6 100644
--- a/phpBB/phpbb/filesystem.php
+++ b/phpBB/phpbb/filesystem.php
@@ -8,6 +8,7 @@
 */
 
 namespace phpbb;
+
 /**
 * @ignore
 */
@@ -22,6 +23,151 @@ if (!defined('IN_PHPBB'))
 */
 class filesystem
 {
+	/** @var phpbb_symfony_request */
+	protected $symfony_request;
+
+	/** @var string */
+	protected $phpbb_root_path;
+
+	/** @var string */
+	protected $adm_relative_path;
+
+	/** @var string */
+	protected $php_ext;
+
+	/** @var string */
+	protected $web_root_path;
+
+	/**
+	* Constructor
+	*
+	* @param phpbb_symfony_request $symfony_request
+	* @param string $phpbb_root_path Relative path to phpBB root
+	* @param string $php_ext PHP extension (php)
+	*/
+	public function __construct(phpbb_symfony_request $symfony_request, $phpbb_root_path, $php_ext, $adm_relative_path = null)
+	{
+		$this->symfony_request = $symfony_request;
+		$this->phpbb_root_path = $phpbb_root_path;
+		$this->php_ext = $php_ext;
+		$this->adm_relative_path = $adm_relative_path;
+	}
+
+	/**
+	* Get the phpBB root path
+	*
+	* @return string
+	*/
+	public function get_phpbb_root_path()
+	{
+		return $this->phpbb_root_path;
+	}
+
+	/**
+	* Get the adm root path
+	*
+	* @return string
+	*/
+	public function get_adm_relative_path()
+	{
+		return $this->adm_relative_path;
+	}
+
+	/**
+	* Get the php extension
+	*
+	* @return string
+	*/
+	public function get_php_ext()
+	{
+		return $this->php_ext;
+	}
+
+	/**
+	* Update a path to the correct relative root path
+	*
+	* This replaces $phpbb_root_path . some_url with
+	*	get_web_root_path() . some_url OR if $phpbb_root_path
+	*	is not at the beginning of $path, just prepends the
+	*	web root path
+	*
+	* @param string $path The path to be updated
+	* @return string
+	*/
+	public function update_web_root_path($path)
+	{
+		$web_root_path = $this->get_web_root_path($this->symfony_request);
+
+		if (strpos($path, $this->phpbb_root_path) === 0)
+		{
+			$path = substr($path, strlen($this->phpbb_root_path));
+		}
+
+		return $web_root_path . $path;
+	}
+
+	/**
+	* Get a relative root path from the current URL
+	*
+	* @return string
+	*/
+	public function get_web_root_path()
+	{
+		if ($this->symfony_request === null)
+		{
+			return $this->phpbb_root_path;
+		}
+
+		if (null !== $this->web_root_path)
+		{
+			return $this->web_root_path;
+		}
+
+		// Path info (e.g. /foo/bar)
+		$path_info = $this->clean_path($this->symfony_request->getPathInfo());
+
+		// Full request URI (e.g. phpBB/app.php/foo/bar)
+		$request_uri = $this->symfony_request->getRequestUri();
+
+		// Script name URI (e.g. phpBB/app.php)
+		$script_name = $this->symfony_request->getScriptName();
+
+		/*
+		* If the path info is empty (single /), then we're not using
+		*	a route like app.php/foo/bar
+		*/
+		if ($path_info === '/')
+		{
+			return $this->web_root_path = $this->phpbb_root_path;
+		}
+
+		// How many corrections might we need?
+		$corrections = substr_count($path_info, '/');
+
+		/*
+		* If the script name (e.g. phpBB/app.php) exists in the
+		*	requestUri (e.g. phpBB/app.php/foo/template), then we
+		*	are have a non-rewritten URL.
+		*/
+		if (strpos($request_uri, $script_name) === 0)
+		{
+			/*
+			* Append ../ to the end of the phpbb_root_path as many times
+			*	as / exists in path_info
+			*/
+			return $this->web_root_path = $this->phpbb_root_path . str_repeat('../', $corrections);
+		}
+
+		/*
+		* If we're here it means we're at a re-written path, so we must
+		*	correct the relative path for web URLs. We must append ../
+		*	to the end of the root path as many times as / exists in path_info
+		*	less one time (because the script, e.g. /app.php, doesn't exist in
+		*	the URL)
+		*/
+		return $this->web_root_path = $this->phpbb_root_path . str_repeat('../', $corrections - 1);
+	}
+
 	/**
 	* Eliminates useless . and .. components from specified path.
 	*
diff --git a/phpBB/phpbb/symfony_request.php b/phpBB/phpbb/symfony_request.php
new file mode 100644
index 0000000000..29ab8c000e
--- /dev/null
+++ b/phpBB/phpbb/symfony_request.php
@@ -0,0 +1,46 @@
+<?php
+/**
+*
+* @package phpBB3
+* @copyright (c) 2013 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+class phpbb_symfony_request extends Request
+{
+	/**
+	* Constructor
+	*
+	* @param phpbb_request_interface $phpbb_request
+	*/
+	public function __construct(phpbb_request_interface $phpbb_request)
+	{
+		// This function is meant to sanitize the global input arrays
+		$sanitizer = function(&$value, $key) {
+			$type_cast_helper = new phpbb_request_type_cast_helper();
+			$type_cast_helper->set_var($value, $value, gettype($value), true);
+		};
+
+		$get_parameters = $phpbb_request->get_super_global(phpbb_request_interface::GET);
+		$post_parameters = $phpbb_request->get_super_global(phpbb_request_interface::POST);
+		$server_parameters = $phpbb_request->get_super_global(phpbb_request_interface::SERVER);
+		$files_parameters = $phpbb_request->get_super_global(phpbb_request_interface::FILES);
+		$cookie_parameters = $phpbb_request->get_super_global(phpbb_request_interface::COOKIE);
+
+		array_walk_recursive($get_parameters, $sanitizer);
+		array_walk_recursive($post_parameters, $sanitizer);
+
+		parent::__construct($get_parameters, $post_parameters, array(), $cookie_parameters, $files_parameters, $server_parameters);
+	}
+}
diff --git a/phpBB/phpbb/template/asset.php b/phpBB/phpbb/template/asset.php
index aa4b25aa7f..fa0661ec82 100644
--- a/phpBB/phpbb/template/asset.php
+++ b/phpBB/phpbb/template/asset.php
@@ -21,13 +21,18 @@ class asset
 {
 	protected $components = array();
 
+	/** @var phpbb_filesystem **/
+	protected $phpbb_filesystem;
+
 	/**
 	* Constructor
 	*
 	* @param string $url URL
 	*/
-	public function __construct($url)
+	public function __construct($url, phpbb_filesystem $phpbb_filesystem)
 	{
+		$this->phpbb_filesystem = $phpbb_filesystem;
+
 		$this->set_url($url);
 	}
 
@@ -114,7 +119,7 @@ class asset
 	*/
 	public function get_url()
 	{
-		return $this->join_url($this->components);
+		return $this->phpbb_filesystem->update_web_root_path($this->join_url($this->components));
 	}
 
 	/**
diff --git a/phpBB/phpbb/template/twig/environment.php b/phpBB/phpbb/template/twig/environment.php
index 7a97c1fc3d..132dae4762 100644
--- a/phpBB/phpbb/template/twig/environment.php
+++ b/phpBB/phpbb/template/twig/environment.php
@@ -25,9 +25,15 @@ class environment extends \Twig_Environment
 	/** @var \phpbb\config\config */
 	protected $phpbb_config;
 
+	/** @var phpbb_filesystem */
+	protected $phpbb_filesystem;
+
 	/** @var string */
 	protected $phpbb_root_path;
 
+	/** @var string */
+	protected $web_root_path;
+
 	/** @var array **/
 	protected $namespace_look_up_order = array('__main__');
 
@@ -36,15 +42,19 @@ class environment extends \Twig_Environment
 	*
 	* @param \phpbb\config\config $phpbb_config
 	* @param array $phpbb_extensions Array of enabled extensions (name => path)
+	* @param \phpbb\filesystem
 	* @param string $phpbb_root_path
 	* @param Twig_LoaderInterface $loader
 	* @param array $options Array of options to pass to Twig
 	*/
-	public function __construct($phpbb_config, $phpbb_extensions, $phpbb_root_path, \Twig_LoaderInterface $loader = null, $options = array())
+	public function __construct($phpbb_config, $phpbb_extensions, \phpbb\filesystem $phpbb_filesystem, \Twig_LoaderInterface $loader = null, $options = array())
 	{
 		$this->phpbb_config = $phpbb_config;
 		$this->phpbb_extensions = $phpbb_extensions;
-		$this->phpbb_root_path = $phpbb_root_path;
+
+		$this->phpbb_filesystem = $phpbb_filesystem;
+		$this->phpbb_root_path = $this->phpbb_filesystem->get_phpbb_root_path();
+		$this->web_root_path = $this->phpbb_filesystem->get_web_root_path();
 
 		return parent::__construct($loader, $options);
 	}
@@ -81,6 +91,26 @@ class environment extends \Twig_Environment
 		return $this->phpbb_root_path;
 	}
 
+	/**
+	* Get the web root path
+	*
+	* @return string
+	*/
+	public function get_web_root_path()
+	{
+		return $this->web_root_path;
+	}
+
+	/**
+	* Get the phpbb_filesystem object
+	*
+	* @return phpbb_filesystem
+	*/
+	public function get_filesystem()
+	{
+		return $this->phpbb_filesystem;
+	}
+
 	/**
 	* Get the namespace look up order
 	*
diff --git a/phpBB/phpbb/template/twig/node/includeasset.php b/phpBB/phpbb/template/twig/node/includeasset.php
index eeedeb31f0..f15fd6296b 100644
--- a/phpBB/phpbb/template/twig/node/includeasset.php
+++ b/phpBB/phpbb/template/twig/node/includeasset.php
@@ -35,7 +35,7 @@ abstract class includeasset extends \Twig_Node
 			->write("\$asset_file = ")
 			->subcompile($this->getNode('expr'))
 			->raw(";\n")
-			->write("\$asset = new \phpbb\\template\asset(\$asset_file);\n")
+			->write("\$asset = new \phpbb\\template\\asset(\$asset_file, \$this->getEnvironment()->get_filesystem());\n")
 			->write("if (substr(\$asset_file, 0, 2) !== './' && \$asset->is_relative()) {\n")
 			->indent()
 				->write("\$asset_path = \$asset->get_path();")
diff --git a/phpBB/phpbb/template/twig/twig.php b/phpBB/phpbb/template/twig/twig.php
index 4856dd483e..2da7405743 100644
--- a/phpBB/phpbb/template/twig/twig.php
+++ b/phpBB/phpbb/template/twig/twig.php
@@ -32,6 +32,12 @@ class twig extends \phpbb\template\base
 	*/
 	private $cachepath = '';
 
+	/**
+	* phpBB filesystem
+	* @var \phpbb\filesystem
+	*/
+	protected $phpbb_filesystem;
+
 	/**
 	* phpBB root path
 	* @var string
@@ -73,24 +79,23 @@ class twig extends \phpbb\template\base
 	/**
 	* Constructor.
 	*
-	* @param string $phpbb_root_path phpBB root path
-	* @param string $php_ext php extension (typically 'php')
+	* @param \phpbb\filesystem $phpbb_filesystem
 	* @param \phpbb\config\config $config
 	* @param \phpbb\user $user
 	* @param \phpbb\template\context $context template context
 	* @param \phpbb\extension\manager $extension_manager extension manager, if null then template events will not be invoked
-	* @param string $adm_relative_path relative path to adm directory
 	*/
-	public function __construct($phpbb_root_path, $php_ext, $config, $user, \phpbb\template\context $context, \phpbb\extension\manager $extension_manager = null, $adm_relative_path = null)
+	public function __construct(\phpbb\filesystem $phpbb_filesystem, $config, $user, \phpbb\template\context $context, \phpbb\extension\manager $extension_manager = null)
 	{
-		$this->phpbb_root_path = $phpbb_root_path;
-		$this->php_ext = $php_ext;
+		$this->phpbb_filesystem = $phpbb_filesystem;
+		$this->phpbb_root_path = $phpbb_filesystem->get_phpbb_root_path();
+		$this->php_ext = $phpbb_filesystem->get_php_ext();
 		$this->config = $config;
 		$this->user = $user;
 		$this->context = $context;
 		$this->extension_manager = $extension_manager;
 
-		$this->cachepath = $phpbb_root_path . 'cache/twig/';
+		$this->cachepath = $this->phpbb_root_path . 'cache/twig/';
 
 		// Initiate the loader, __main__ namespace paths will be setup later in set_style_names()
 		$loader = new \phpbb\template\twig\loader('');
@@ -98,7 +103,7 @@ class twig extends \phpbb\template\base
 		$this->twig = new \phpbb\template\twig\environment(
 			$this->config,
 			($this->extension_manager) ? $this->extension_manager->all_enabled() : array(),
-			$this->phpbb_root_path,
+			$this->phpbb_filesystem,
 			$loader,
 			array(
 				'cache'			=> (defined('IN_INSTALL')) ? false : $this->cachepath,
@@ -120,9 +125,9 @@ class twig extends \phpbb\template\base
 		$this->twig->setLexer($lexer);
 
 		// Add admin namespace
-		if ($adm_relative_path !== null && is_dir($this->phpbb_root_path . $adm_relative_path . 'style/'))
+		if ($this->phpbb_filesystem->get_adm_relative_path() !== null && is_dir($this->phpbb_root_path . $this->phpbb_filesystem->get_adm_relative_path() . 'style/'))
 		{
-			$this->twig->getLoader()->setPaths($this->phpbb_root_path . $adm_relative_path . 'style/', 'admin');
+			$this->twig->getLoader()->setPaths($this->phpbb_root_path . $this->phpbb_filesystem->get_adm_relative_path() . 'style/', 'admin');
 		}
 	}
 
diff --git a/tests/controller/helper_url_test.php b/tests/controller/helper_url_test.php
index 9a75015c9f..6e53db9ba2 100644
--- a/tests/controller/helper_url_test.php
+++ b/tests/controller/helper_url_test.php
@@ -49,7 +49,14 @@ class phpbb_controller_helper_url_test extends phpbb_test_case
 
 		$phpbb_dispatcher = new phpbb_mock_event_dispatcher;
 		$this->user = $this->getMock('\phpbb\user');
-		$this->template = new \phpbb\template\twig\twig($phpbb_root_path, $phpEx, $config, $this->user, new \phpbb\template\context());
+		$phpbb_filesystem = new \phpbb\filesystem(
+			new \phpbb\symfony\request(
+				new phpbb_mock_request()
+			),
+			$phpbb_root_path,
+			$phpEx
+		);
+		$this->template = new phpbb\template\twig\twig($phpbb_filesystem, $config, $this->user, new \phpbb\template\context());
 
 		// We don't use mod_rewrite in these tests
 		$config = new \phpbb\config\config(array('enable_mod_rewrite' => '0'));
@@ -94,7 +101,14 @@ class phpbb_controller_helper_url_test extends phpbb_test_case
 
 		$phpbb_dispatcher = new phpbb_mock_event_dispatcher;
 		$this->user = $this->getMock('\phpbb\user');
-		$this->template = new \phpbb\template\twig\twig($phpbb_root_path, $phpEx, $config, $this->user, new \phpbb\template\context());
+		$phpbb_filesystem = new \phpbb\filesystem(
+			new \phpbb\symfony\request(
+				new phpbb_mock_request()
+			),
+			$phpbb_root_path,
+			$phpEx
+		);
+		$this->template = new \phpbb\template\twig\twig($phpbb_filesystem, $config, $this->user, new \phpbb\template\context());
 
 		$config = new \phpbb\config\config(array('enable_mod_rewrite' => '1'));
 		$helper = new \phpbb\controller\helper($this->template, $this->user, $config, '', 'php');
diff --git a/tests/dbal/migrator_test.php b/tests/dbal/migrator_test.php
index 6679ae407b..6481e09ead 100644
--- a/tests/dbal/migrator_test.php
+++ b/tests/dbal/migrator_test.php
@@ -59,7 +59,13 @@ class phpbb_dbal_migrator_test extends phpbb_database_test_case
 			$container,
 			$this->db,
 			$this->config,
-			new \phpbb\filesystem(),
+			new phpbb\filesystem(
+				new phpbb\symfony\request(
+					new phpbb_mock_request()
+				),
+				dirname(__FILE__) . '/../../phpBB/',
+				'php'
+			),
 			'phpbb_ext',
 			dirname(__FILE__) . '/../../phpBB/',
 			'php',
diff --git a/tests/extension/manager_test.php b/tests/extension/manager_test.php
index b127daf2ed..d694d298fa 100644
--- a/tests/extension/manager_test.php
+++ b/tests/extension/manager_test.php
@@ -114,7 +114,13 @@ class phpbb_extension_manager_test extends phpbb_database_test_case
 			$container,
 			$db,
 			$config,
-			new \phpbb\filesystem(),
+			new \phpbb\filesystem(
+				new \phpbb\symfony\request(
+					new phpbb_mock_request()
+				),
+				$phpbb_root_path,
+				$php_ext
+			),
 			'phpbb_ext',
 			dirname(__FILE__) . '/',
 			$php_ext,
diff --git a/tests/extension/metadata_manager_test.php b/tests/extension/metadata_manager_test.php
index 984ae63fa2..b68bf8e36a 100644
--- a/tests/extension/metadata_manager_test.php
+++ b/tests/extension/metadata_manager_test.php
@@ -41,8 +41,13 @@ class phpbb_extension_metadata_manager_test extends phpbb_database_test_case
 		$this->table_prefix = 'phpbb_';
 
 		$this->template = new \phpbb\template\twig\twig(
-			$this->phpbb_root_path,
-			$this->phpEx,
+			new \phpbb\filesystem(
+				new \phpbb\symfony\request(
+					new phpbb_mock_request()
+				),
+				$this->phpbb_root_path,
+				$this->phpEx
+			),
 			$this->config,
 			$this->user,
 			new \phpbb\template\context()
@@ -65,7 +70,13 @@ class phpbb_extension_metadata_manager_test extends phpbb_database_test_case
 			$container,
 			$this->db,
 			$this->config,
-			new \phpbb\filesystem(),
+			new \phpbb\filesystem(
+				new \phpbb\symfony\request(
+					new phpbb_mock_request()
+				),
+				$this->phpbb_root_path,
+				$this->phpEx
+			),
 			'phpbb_ext',
 			$this->phpbb_root_path,
 			$this->phpEx,
diff --git a/tests/filesystem/clean_path_test.php b/tests/filesystem/clean_path_test.php
index fedadc103b..7fefcf2f90 100644
--- a/tests/filesystem/clean_path_test.php
+++ b/tests/filesystem/clean_path_test.php
@@ -14,7 +14,13 @@ class phpbb_filesystem_clean_path_test extends phpbb_test_case
 	public function setUp()
 	{
 		parent::setUp();
-		$this->filesystem = new \phpbb\filesystem();
+		$this->filesystem = new \phpbb\filesystem(
+			new \phpbb\symfony\request(
+				new phpbb_mock_request()
+			),
+			dirname(__FILE__) . './../../phpBB/',
+			'php'
+		);
 	}
 
 	public function clean_path_data()
diff --git a/tests/filesystem/web_root_path_test.php b/tests/filesystem/web_root_path_test.php
new file mode 100644
index 0000000000..ae59d4f709
--- /dev/null
+++ b/tests/filesystem/web_root_path_test.php
@@ -0,0 +1,142 @@
+<?php
+/**
+*
+* @package testing
+* @copyright (c) 2013 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+class phpbb_filesystem_web_root_path_test extends phpbb_test_case
+{
+	protected $filesystem;
+	protected $phpbb_root_path = '';
+
+	public function setUp()
+	{
+		parent::setUp();
+
+		$this->set_phpbb_root_path();
+
+		$this->filesystem = new phpbb_filesystem(
+			new phpbb_symfony_request(
+				new phpbb_mock_request()
+			),
+			$this->phpbb_root_path,
+			'php'
+		);
+	}
+
+	/**
+	* Set the phpbb_root_path
+	*
+	* This is necessary because dataProvider functions are called
+	*	before setUp or setUpBeforeClass; so we must set the path
+	*	any time we wish to use it in one of these functions (and
+	*	also in general for everything else)
+	*/
+	public function set_phpbb_root_path()
+	{
+		$this->phpbb_root_path = dirname(__FILE__) . './../../phpBB/';
+	}
+
+	public function test_get_web_root_path()
+	{
+		// Symfony Request = null, so always should return phpbb_root_path
+		$this->assertEquals($this->phpbb_root_path, $this->filesystem->get_web_root_path());
+	}
+
+	public function basic_update_web_root_path_data()
+	{
+		$this->set_phpbb_root_path();
+
+		return array(
+			array(
+				$this->phpbb_root_path . 'test.php',
+				$this->phpbb_root_path . 'test.php',
+			),
+			array(
+				'test.php',
+				$this->phpbb_root_path . 'test.php',
+			),
+			array(
+				$this->phpbb_root_path . $this->phpbb_root_path . 'test.php',
+				$this->phpbb_root_path . $this->phpbb_root_path . 'test.php',
+			),
+		);
+	}
+
+	/**
+	* @dataProvider basic_update_web_root_path_data
+	*/
+	public function test_basic_update_web_root_path($input, $expected)
+	{
+		$this->assertEquals($expected, $this->filesystem->update_web_root_path($input, $symfony_request));
+	}
+
+	public function update_web_root_path_data()
+	{
+		$this->set_phpbb_root_path();
+
+		return array(
+			array(
+				$this->phpbb_root_path . 'test.php',
+				$this->phpbb_root_path . 'test.php',
+				'/',
+			),
+			array(
+				$this->phpbb_root_path . 'test.php',
+				$this->phpbb_root_path . '../test.php',
+				'//',
+			),
+			array(
+				$this->phpbb_root_path . 'test.php',
+				$this->phpbb_root_path . '../test.php',
+				'//',
+				'foo/bar.php',
+				'bar.php',
+			),
+			array(
+				$this->phpbb_root_path . 'test.php',
+				$this->phpbb_root_path . '../../test.php',
+				'/foo/template',
+				'/phpbb3-fork/phpBB/app.php/foo/template',
+				'/phpbb3-fork/phpBB/app.php',
+			),
+			array(
+				$this->phpbb_root_path . 'test.php',
+				$this->phpbb_root_path . '../test.php',
+				'/foo/template',
+				'/phpbb3-fork/phpBB/foo/template',
+				'/phpbb3-fork/phpBB/app.php',
+			),
+		);
+	}
+
+	/**
+	* @dataProvider update_web_root_path_data
+	*/
+	public function test_update_web_root_path($input, $expected, $getPathInfo, $getRequestUri = null, $getScriptName = null)
+	{
+		$symfony_request = $this->getMock("phpbb_symfony_request", array(), array(
+			new phpbb_mock_request(),
+		));
+		$symfony_request->expects($this->any())
+			->method('getPathInfo')
+			->will($this->returnValue($getPathInfo));
+		$symfony_request->expects($this->any())
+			->method('getRequestUri')
+			->will($this->returnValue($getRequestUri));
+		$symfony_request->expects($this->any())
+			->method('getScriptName')
+			->will($this->returnValue($getScriptName));
+
+		$filesystem = new phpbb_filesystem(
+			$symfony_request,
+			$this->phpbb_root_path,
+			'php'
+		);
+
+		$this->assertEquals($expected, $filesystem->update_web_root_path($input, $symfony_request));
+	}
+}
diff --git a/tests/mock/extension_manager.php b/tests/mock/extension_manager.php
index 7049cbdc50..82065fc37d 100644
--- a/tests/mock/extension_manager.php
+++ b/tests/mock/extension_manager.php
@@ -14,6 +14,12 @@ class phpbb_mock_extension_manager extends \phpbb\extension\manager
 		$this->phpbb_root_path = $phpbb_root_path;
 		$this->php_ext = 'php';
 		$this->extensions = $extensions;
-		$this->filesystem = new \phpbb\filesystem();
+		$this->filesystem = new \phpbb\filesystem(
+			new \phpbb\symfony\request(
+				new phpbb_mock_request()
+			),
+			$this->phpbb_root_path,
+			$this->php_ext
+		);
 	}
 }
diff --git a/tests/template/template_events_test.php b/tests/template/template_events_test.php
index 801f0055c8..41ece4972b 100644
--- a/tests/template/template_events_test.php
+++ b/tests/template/template_events_test.php
@@ -116,7 +116,14 @@ Zeta test event in all',
 		$this->extension_manager = new phpbb_mock_filesystem_extension_manager(
 			dirname(__FILE__) . "/datasets/$dataset/"
 		);
-		$this->template = new \phpbb\template\twig\twig($phpbb_root_path, $phpEx, $config, $user, new \phpbb\template\context, $this->extension_manager);
+		$phpbb_filesystem = new \phpbb\filesystem(
+			new \phpbb\symfony\request(
+				new phpbb_mock_request()
+			),
+			$phpbb_root_path,
+			$phpEx
+		);
+		$this->template = new \phpbb\template\twig\twig($phpbb_filesystem, $config, $user, new \phpbb\template\context, $this->extension_manager);
 		$this->template->set_custom_style(((!empty($style_names)) ? $style_names : 'silver'), array($this->template_path));
 	}
 }
diff --git a/tests/template/template_includecss_test.php b/tests/template/template_includecss_test.php
index f8999ad1a9..c00aa8e9bb 100644
--- a/tests/template/template_includecss_test.php
+++ b/tests/template/template_includecss_test.php
@@ -18,8 +18,8 @@ class phpbb_template_template_includecss_test extends phpbb_template_template_te
 
 		// Prepare correct result
 		$scripts = array(
-			'<link href="' . $this->test_path . '/templates/child_only.css?assets_version=1" rel="stylesheet" type="text/css" media="screen, projection" />',
-			'<link href="' . $this->test_path . '/parent_templates/parent_only.css?assets_version=1" rel="stylesheet" type="text/css" media="screen, projection" />',
+			'<link href="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/templates/child_only.css?assets_version=1" rel="stylesheet" type="text/css" media="screen, projection" />',
+			'<link href="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/parent_templates/parent_only.css?assets_version=1" rel="stylesheet" type="text/css" media="screen, projection" />',
 		);
 
 		// Run test
diff --git a/tests/template/template_includejs_test.php b/tests/template/template_includejs_test.php
index b67fa123a1..2faeb5fcaa 100644
--- a/tests/template/template_includejs_test.php
+++ b/tests/template/template_includejs_test.php
@@ -13,6 +13,8 @@ class phpbb_template_template_includejs_test extends phpbb_template_template_tes
 {
 	public function template_data()
 	{
+		$this->setup_engine();
+
 		return array(
 			/*
 			array(
@@ -22,51 +24,51 @@ class phpbb_template_template_includejs_test extends phpbb_template_template_tes
 			*/
 			array(
 				array('TEST' => 1),
-				'<script type="text/javascript" src="' . $this->test_path . '/templates/parent_and_child.js?assets_version=1"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/templates/parent_and_child.js?assets_version=1"></script>',
 			),
 			array(
 				array('TEST' => 2),
-				'<script type="text/javascript" src="' . $this->test_path . '/templates/parent_and_child.js?assets_version=0"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/templates/parent_and_child.js?assets_version=0"></script>',
 			),
 			array(
 				array('TEST' => 3),
-				'<script type="text/javascript" src="' . $this->test_path . '/templates/parent_and_child.js?test=1&assets_version=0"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/templates/parent_and_child.js?test=1&assets_version=0"></script>',
 			),
 			array(
 				array('TEST' => 4),
-				'<script type="text/javascript" src="' . $this->test_path . '/templates/parent_and_child.js?test=1&amp;assets_version=0"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/templates/parent_and_child.js?test=1&amp;assets_version=0"></script>',
 			),
 			array(
 				array('TEST' => 6),
-				'<script type="text/javascript" src="' . $this->test_path . '/parent_templates/parent_only.js?assets_version=1"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/parent_templates/parent_only.js?assets_version=1"></script>',
 			),
 			array(
 				array('TEST' => 7),
-				'<script type="text/javascript" src="' . $this->test_path . '/templates/child_only.js?assets_version=1"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/templates/child_only.js?assets_version=1"></script>',
 			),
 			array(
 				array('TEST' => 8),
-				'<script type="text/javascript" src="' . $this->test_path . '/templates/subdir/parent_only.js?assets_version=1"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/templates/subdir/parent_only.js?assets_version=1"></script>',
 			),
 			array(
 				array('TEST' => 9),
-				'<script type="text/javascript" src="' . $this->test_path . '/templates/subdir/subsubdir/parent_only.js?assets_version=1"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/templates/subdir/subsubdir/parent_only.js?assets_version=1"></script>',
 			),
 			array(
 				array('TEST' => 10),
-				'<script type="text/javascript" src="' . $this->test_path . '/templates/subdir/parent_only.js?assets_version=1"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/templates/subdir/parent_only.js?assets_version=1"></script>',
 			),
 			array(
 				array('TEST' => 11),
-				'<script type="text/javascript" src="' . $this->test_path . '/templates/child_only.js?test1=1&amp;test2=2&amp;assets_version=1#test3"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/templates/child_only.js?test1=1&amp;test2=2&amp;assets_version=1#test3"></script>',
 			),
 			array(
 				array('TEST' => 12),
-				'<script type="text/javascript" src="' . $this->test_path . '/parent_templates/parent_only.js?test1=1&amp;test2=2&amp;assets_version=1#test3"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/parent_templates/parent_only.js?test1=1&amp;test2=2&amp;assets_version=1#test3"></script>',
 			),
 			array(
 				array('TEST' => 14),
-				'<script type="text/javascript" src="' . $this->test_path . '/parent_templates/parent_only.js?test1=&quot;&amp;assets_version=1#test3"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/parent_templates/parent_only.js?test1=&quot;&amp;assets_version=1#test3"></script>',
 			),
 			array(
 				array('TEST' => 15),
@@ -82,7 +84,7 @@ class phpbb_template_template_includejs_test extends phpbb_template_template_tes
 			),
 			array(
 				array('TEST' => 18),
-				'<script type="text/javascript" src="' . $this->test_path . '/templates/parent_and_child.js?test=1&test2=0&amp;assets_version=1"></script>',
+				'<script type="text/javascript" src="' . $this->phpbb_filesystem->get_web_root_path() . 'tests/template/templates/parent_and_child.js?test=1&test2=0&amp;assets_version=1"></script>',
 			),
 		);
 	}
diff --git a/tests/template/template_test_case.php b/tests/template/template_test_case.php
index 7251151ef0..c9b38ee40d 100644
--- a/tests/template/template_test_case.php
+++ b/tests/template/template_test_case.php
@@ -63,8 +63,16 @@ class phpbb_template_template_test_case extends phpbb_test_case
 		$config = new \phpbb\config\config(array_merge($defaults, $new_config));
 		$this->user = new \phpbb\user;
 
+		$phpbb_filesystem = new phpbb_filesystem(
+			new phpbb_symfony_request(
+				new phpbb_mock_request()
+			),
+			$phpbb_root_path,
+			$phpEx
+		);
+
 		$this->template_path = $this->test_path . '/templates';
-		$this->template = new \phpbb\template\twig\twig($phpbb_root_path, $phpEx, $config, $this->user, new \phpbb\template\context());
+		$this->template = new \phpbb\template\twig\twig($phpbb_filesystem, $config, $this->user, new \phpbb\template\context());
 		$this->template->set_custom_style('tests', $this->template_path);
 	}
 
diff --git a/tests/template/template_test_case_with_tree.php b/tests/template/template_test_case_with_tree.php
index 438aa66471..7f7cffdb82 100644
--- a/tests/template/template_test_case_with_tree.php
+++ b/tests/template/template_test_case_with_tree.php
@@ -18,9 +18,17 @@ class phpbb_template_template_test_case_with_tree extends phpbb_template_templat
 		$defaults = $this->config_defaults();
 		$config = new \phpbb\config\config(array_merge($defaults, $new_config));
 
+		$this->phpbb_filesystem = new phpbb_filesystem(
+			new phpbb_symfony_request(
+				new phpbb_mock_request()
+			),
+			$phpbb_root_path,
+			$phpEx
+		);
+
 		$this->template_path = $this->test_path . '/templates';
 		$this->parent_template_path = $this->test_path . '/parent_templates';
-		$this->template = new \phpbb\template\twig\twig($phpbb_root_path, $phpEx, $config, $user, new \phpbb\template\context());
+		$this->template = new phpbb\template\twig\twig($this->phpbb_filesystem, $config, $user, new phpbb\template\context());
 		$this->template->set_custom_style('tests', array($this->template_path, $this->parent_template_path));
 	}
 }
diff --git a/tests/test_framework/phpbb_functional_test_case.php b/tests/test_framework/phpbb_functional_test_case.php
index 3b13d35f97..f8ec125481 100644
--- a/tests/test_framework/phpbb_functional_test_case.php
+++ b/tests/test_framework/phpbb_functional_test_case.php
@@ -203,7 +203,13 @@ class phpbb_functional_test_case extends phpbb_test_case
 			$container,
 			$db,
 			$config,
-			new \phpbb\filesystem(),
+			new phpbb\filesystem(
+				new phpbb\symfony\request(
+					new phpbb_mock_request()
+				),
+				$phpbb_root_path,
+				$php_ext
+			),
 			self::$config['table_prefix'] . 'ext',
 			dirname(__FILE__) . '/',
 			$php_ext,