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function testSuppressIteration1() {
var arr = [];
arr[10000000] = 1;
arr[20000000] = 2;
arr[90000000] = 9;
var seen = [];
for (var prop in arr) {
seen.push(prop);
arr.length = 0;
}
assertEq(JSON.stringify(seen), '["10000000"]');
}
testSuppressIteration1();
function testSuppressIteration2() {
var arr = [];
arr[10000000] = 1;
arr[20000000] = 2;
arr[90000000] = 9;
var seen = [];
for (var prop in arr) {
seen.push(prop);
arr.length = 20000001;
}
assertEq(JSON.stringify(seen), '["10000000","20000000"]');
}
testSuppressIteration2();
function testNonConfigurable() {
var arr = [];
arr[100000] = 1;
Object.defineProperty(arr, 200000, {configurable: false, writable: true, value: 2});
arr[200005] = 3;
arr.length = 0;
assertEq(arr.length, 200001);
assertEq(JSON.stringify(Object.keys(arr)), '["100000"]');
}
testNonConfigurable();