Adding core and libraries mock classes
diff --git a/tests/mocks/libraries/typography.php b/tests/mocks/libraries/typography.php
new file mode 100644
index 0000000..0f76c57
--- /dev/null
+++ b/tests/mocks/libraries/typography.php
@@ -0,0 +1,3 @@
+<?php
+
+class Mock_Libraries_Typography extends CI_Typography {}
\ No newline at end of file