michael@0: // Map.clear is unaffected by deleting/monkeypatching Map.prototype.{delete,iterator}.
michael@0: 
michael@0: var data = [["a", 1], ["b", 2]];
michael@0: var m1 = Map(data), m2 = Map(data);
michael@0: 
michael@0: delete Map.prototype.delete;
michael@0: delete Map.prototype.iterator;
michael@0: m1.clear();
michael@0: assertEq(m1.size, 0);
michael@0: 
michael@0: Map.prototype.delete = function () { throw "FAIL"; };
michael@0: Map.prototype.iterator = function () { throw "FAIL"; };
michael@0: m2.clear();
michael@0: assertEq(m2.size, 0);