michael@0: var Cc = Components.classes;
michael@0: var Ci = Components.interfaces;
michael@0: 
michael@0: function run_test() {
michael@0:   var f = do_get_file('test_bug336501.js');
michael@0: 
michael@0:   var fis =
michael@0:       Cc["@mozilla.org/network/file-input-stream;1"].
michael@0:       createInstance(Ci.nsIFileInputStream);
michael@0:   fis.init(f, -1, -1, 0); 
michael@0: 
michael@0:   var bis =
michael@0:       Cc["@mozilla.org/network/buffered-input-stream;1"].
michael@0:       createInstance(Ci.nsIBufferedInputStream);
michael@0:   bis.init(fis, 32);
michael@0: 
michael@0:   var sis =
michael@0:       Cc["@mozilla.org/scriptableinputstream;1"].
michael@0:       createInstance(Ci.nsIScriptableInputStream);
michael@0:   sis.init(bis);
michael@0: 
michael@0:   sis.read(45);
michael@0:   sis.close();
michael@0: 
michael@0:   var data = sis.read(45);
michael@0:   do_check_eq(data.length, 0);
michael@0: }