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function Foo(a, b) {
this.a = a;
this.b = b;
}
function invalidate_foo() {
var a = [];
var counter = 0;
for (var i = 0; i < 50; i++)
a.push(new Foo(i, i + 1));
Object.defineProperty(Foo.prototype, "a", {configurable: true, set: function() { counter++; }});
for (var i = 0; i < 50; i++)
a.push(new Foo(i, i + 1));
delete Foo.prototype.a;
var total = 0;
for (var i = 0; i < a.length; i++) {
assertEq('a' in a[i], i < 50);
total += a[i].b;
}
assertEq(total, 2550);
assertEq(counter, 50);
}
invalidate_foo();
function Bar(a, b, fn) {
this.a = a;
if (b == 30)
Object.defineProperty(Bar.prototype, "b", {configurable: true, set: fn});
this.b = b;
}
function invalidate_bar() {
var a = [];
var counter = 0;
function fn() { counter++; }
for (var i = 0; i < 50; i++)
a.push(new Bar(i, i + 1, fn));
delete Bar.prototype.b;
var total = 0;
for (var i = 0; i < a.length; i++) {
assertEq('a' in a[i], true);
assertEq('b' in a[i], i < 29);
total += a[i].a;
}
assertEq(total, 1225);
assertEq(counter, 21);
}
invalidate_bar();
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