Integrated vfsStream better and made paths constants VFS-based

Signed-off-by: dchill42 <dchill42@gmail.com>
diff --git a/tests/codeigniter/libraries/Typography_test.php b/tests/codeigniter/libraries/Typography_test.php
index eb6dacb..5dba062 100644
--- a/tests/codeigniter/libraries/Typography_test.php
+++ b/tests/codeigniter/libraries/Typography_test.php
@@ -4,12 +4,8 @@
 
 	public function set_up()
 	{
-		$obj = new stdClass;
-		$obj->type = new Mock_Libraries_Typography();
-
-		$this->ci_instance($obj);
-
-		$this->type = $obj->type;
+		$this->type = new Mock_Libraries_Typography();
+		$this->ci_instance('type', $this->type);
 	}
 
 	// --------------------------------------------------------------------