Use getMockBuilder() in PHPUnit instead of the deprecated getMock()
diff --git a/tests/codeigniter/helpers/number_helper_test.php b/tests/codeigniter/helpers/number_helper_test.php
index 817db2c..663e354 100644
--- a/tests/codeigniter/helpers/number_helper_test.php
+++ b/tests/codeigniter/helpers/number_helper_test.php
@@ -11,7 +11,7 @@
 
 		// Mock away load, too much going on in there,
 		// we'll just check for the expected parameter
-		$lang = $this->getMock($lang_cls, array('load'));
+		$lang = $this->getMockBuilder('CI_Lang')->setMethods(array('load'))->getMock();
 		$lang->expects($this->once())
 			 ->method('load')
 			 ->with($this->equalTo('number'));
@@ -60,4 +60,4 @@
 		$this->assertEquals('112,283.3 TB', byte_format(123456789123456789));
 	}
 
-}
\ No newline at end of file
+}