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// Assigning to an existing array element via a proxy with no set handler
// calls the defineProperty handler.
function test(arr) {
var p = new Proxy(arr, {
defineProperty(t, id, desc) {
hits++;
// ES6 draft rev 28 (2014 Oct 14) 9.1.9 step 5.e.i.
// Since the property already exists, the system only changes
// the value. desc is otherwise empty.
assertEq(Object.getOwnPropertyNames(desc).join(","), "value");
assertEq(desc.value, "ponies");
return true;
}
});
var hits = 0;
p[0] = "ponies";
assertEq(hits, 1);
assertEq(arr[0], 123);
}
test([123]);
test(new Int32Array([123]));