Replaced Mock_Core_Lang with PHPUnit mockups

Signed-off-by: dchill42 <dchill42@gmail.com>
diff --git a/tests/codeigniter/libraries/Upload_test.php b/tests/codeigniter/libraries/Upload_test.php
index 546cebc..1bd8f14 100644
--- a/tests/codeigniter/libraries/Upload_test.php
+++ b/tests/codeigniter/libraries/Upload_test.php
@@ -7,7 +7,8 @@
 		$ci = $this->ci_instance();
 		$ci->upload = new Mock_Libraries_Upload();
 		$ci->security = new Mock_Core_Security();
-		$ci->lang = new Mock_Core_Lang();
+		$ci->lang = $this->getMock('CI_Lang', array('load', 'line'));
+		$ci->lang->expects($this->any())->method('line')->will($this->returnValue(FALSE));
 		$this->upload = $ci->upload;
 	}