michael@0: function run_test() {
michael@0:   var ioServ = Components.classes["@mozilla.org/network/io-service;1"]
michael@0:                          .getService(Components.interfaces.nsIIOService);
michael@0: 
michael@0:   var base = ioServ.newURI("http://www.example.com", null, null);
michael@0: 
michael@0:   var about1 = ioServ.newURI("about:blank", null, null);
michael@0:   var about2 = ioServ.newURI("about:blank", null, base);
michael@0: 
michael@0:   var chan1 = ioServ.newChannelFromURI(about1)
michael@0:                     .QueryInterface(Components.interfaces.nsIPropertyBag2);
michael@0:   var chan2 = ioServ.newChannelFromURI(about2)
michael@0:                     .QueryInterface(Components.interfaces.nsIPropertyBag2);
michael@0: 
michael@0:   var haveProp = false;
michael@0:   var propVal = null;
michael@0:   try {
michael@0:     propVal = chan1.getPropertyAsInterface("baseURI",
michael@0:                                            Components.interfaces.nsIURI);
michael@0:     haveProp = true;
michael@0:   } catch (e if e.result == Components.results.NS_ERROR_NOT_AVAILABLE) {
michael@0:     // Property shouldn't be there.
michael@0:   }
michael@0:   do_check_eq(propVal, null);
michael@0:   do_check_eq(haveProp, false);
michael@0:   do_check_eq(chan2.getPropertyAsInterface("baseURI",
michael@0:                                            Components.interfaces.nsIURI),
michael@0:               base);
michael@0: }