michael@0: // |reftest| skip-if(!xulRuntime.shell)
michael@0: // Any copyright is dedicated to the Public Domain.
michael@0: // http://creativecommons.org/licenses/publicdomain/
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: var BUGNUMBER = 843004;
michael@0: var summary =
michael@0:   "Use of an object that emulates |undefined| as the sole option must " +
michael@0:   "preclude imputing default values";
michael@0: 
michael@0: print(BUGNUMBER + ": " + summary);
michael@0: 
michael@0: if (typeof Intl !== 'object' && typeof quit == 'function') {
michael@0:   print("Test skipped");
michael@0:   reportCompare(true, true);
michael@0:   quit(0);
michael@0: }
michael@0: 
michael@0: /**************
michael@0:  * BEGIN TEST *
michael@0:  **************/
michael@0: 
michael@0: var opt = objectEmulatingUndefined();
michael@0: opt.toString = function() { return "long"; };
michael@0: 
michael@0: var str = new Date(2013, 12 - 1, 14).toLocaleString("en-US", { weekday: opt });
michael@0: 
michael@0: // Because "weekday" was present and not undefined (stringifying to "long"),
michael@0: // this must be a string like "Saturday" (in this implementation, that is).
michael@0: assertEq(str, "Saturday");
michael@0: 
michael@0: if (typeof reportCompare === "function")
michael@0:   reportCompare(true, true);
michael@0: 
michael@0: print("Tests complete");