michael@0: /*
michael@0:  * Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/licenses/publicdomain/
michael@0:  */
michael@0: 
michael@0: var hitCount;
michael@0: function watcher(p,o,n) { hitCount++; return n; }
michael@0: 
michael@0: var a = [1];
michael@0: a.watch('length', watcher);
michael@0: hitCount = 0;
michael@0: a.length = 0;
michael@0: reportCompare(1, hitCount, "lenient; configurable: watchpoint hit");
michael@0: 
michael@0: var b = Object.defineProperty([1],'0',{configurable:false});
michael@0: b.watch('length', watcher);
michael@0: hitCount = 0;
michael@0: var result;
michael@0: try {
michael@0:     b.length = 0;    
michael@0:     result = "no error";
michael@0: } catch (x) {
michael@0:     result = x.toString();
michael@0: }
michael@0: reportCompare(1, hitCount, "lenient; non-configurable: watchpoint hit");
michael@0: reportCompare(1, b.length, "lenient; non-configurable: length unchanged");
michael@0: reportCompare("no error", result, "lenient; non-configurable: no error thrown");
michael@0: 
michael@0: var c = Object.defineProperty([1],'0',{configurable:false});
michael@0: c.watch('length', watcher);
michael@0: hitCount = 0;
michael@0: var threwTypeError;
michael@0: try {
michael@0:     (function(){'use strict'; c.length = 0;})();
michael@0:     threwTypeError = false;
michael@0: } catch (x) {
michael@0:     threwTypeError = x instanceof TypeError;
michael@0: }
michael@0: reportCompare(1, hitCount, "strict; non-configurable: watchpoint hit");
michael@0: reportCompare(1, c.length, "strict; non-configurable: length unchanged");
michael@0: reportCompare(true, threwTypeError, "strict; non-configurable: TypeError thrown");