Removed closing PHP tags, replaced with a comment block identifying the end of the file
diff --git a/system/libraries/Unit_test.php b/system/libraries/Unit_test.php
index 3cdf45f..2fb2bbd 100644
--- a/system/libraries/Unit_test.php
+++ b/system/libraries/Unit_test.php
@@ -340,4 +340,6 @@
 	return (is_bool($test) AND $test === FALSE) ? TRUE : FALSE;

 }

 

-?>
\ No newline at end of file
+
+/* End of file Unit_test.php */
+/* Location: ./system/libraries/Unit_test.php */
\ No newline at end of file