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// Ensure that we're using [[ArrayLength]] to determine the number of
// values to produce instead of the length property.
function testIterationCount(iterator, expectedLength) {
for (let i = 0; i < expectedLength; i++)
assertEq(iterator.next().done, false);
assertEq(iterator.next().done, true);
}
let i8Array = new Int8Array(4);
Object.defineProperty(i8Array, "length", {value: 0});
let i8Iterator = i8Array[Symbol.iterator]();
testIterationCount(i8Iterator, 4);
// Veryify that the length property isn't even touched
i8Array = new Int8Array();
Object.defineProperty(i8Array, "length", {
get() {
throw TypeError;
}
});
i8Iterator = i8Array[Symbol.iterator]();
testIterationCount(i8Iterator, 0);
// Verify that it works for set as well
i8Array = new Uint8Array(1);
// Try setting a high length which would trigger failure
Object.defineProperty(i8Array, "length", {value: 15});
// Works if the fake length is ignored
(new Uint8Array(4)).set(i8Array, 3);
// Ensure that it works across globals
let g2 = newGlobal();
i8Array = new Int8Array(8);
Object.defineProperty(i8Array, "length", {value: 0});
let iterator = i8Array[Symbol.iterator]();
iterator.next = g2.Array.prototype[Symbol.iterator]().next;
testIterationCount(iterator, 8);
if (typeof reportCompare === "function")
reportCompare(true, true);
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