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