Added get_dir_file_info(), get_file_info(), and get_mime_by_extension() to the File Helper.

Changed ( ! condition) into (! condition) within the code
diff --git a/system/libraries/Unit_test.php b/system/libraries/Unit_test.php
index ff4d0c7..3cdf45f 100644
--- a/system/libraries/Unit_test.php
+++ b/system/libraries/Unit_test.php
@@ -260,8 +260,8 @@
 		{

 			$back = debug_backtrace();

 			

-			$file = ( ! isset($back['1']['file'])) ? '' : $back['1']['file'];

-			$line = ( ! isset($back['1']['line'])) ? '' : $back['1']['line'];

+			$file = (! isset($back['1']['file'])) ? '' : $back['1']['file'];

+			$line = (! isset($back['1']['line'])) ? '' : $back['1']['line'];

 						

 			return array('file' => $file, 'line' => $line);

 		}

@@ -300,7 +300,7 @@
 	 */

  	function _parse_template()

  	{

- 		if ( ! is_null($this->_template_rows))

+ 		if (! is_null($this->_template_rows))

  		{

  			return;

  		}

@@ -311,7 +311,7 @@
  			return;

  		}

  		

-		if ( ! preg_match("/\{rows\}(.*?)\{\/rows\}/si", $this->_template, $match))

+		if (! preg_match("/\{rows\}(.*?)\{\/rows\}/si", $this->_template, $match))

 		{

  			$this->_default_template();

  			return;