fixed test file corruption problem

* gentest.py: fixed test file corruption problem
diff --git a/gentest.py b/gentest.py
index b8603c2..77e81a0 100755
--- a/gentest.py
+++ b/gentest.py
@@ -200,7 +200,9 @@
            string.find(info, "filename") != -1 or \
            string.find(info, "URI") != -1 or \
            string.find(info, "URL") != -1:
-	    if string.find(function, "Save") != -1:
+	    if string.find(function, "Save") != -1 or \
+	       string.find(function, "Create") != -1 or \
+	       string.find(function, "Write") != -1:
 	        return('fileoutput')
 	    return('filepath')
     if res == 'void_ptr':