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load(libdir + "asserts.js");
function f(arr)
{
assertEq(arr.pop(), undefined); // if it doesn't throw
}
var N = 100;
function basic(out)
{
// Create an array of arrays, to be iterated over for [].pop-calling. We
// can't just loop on pop on a single array with non-writable length because
// pop throws when called on an array with non-writable length.
var arrs = out.arrs = [];
for (var i = 0; i < N; i++)
{
var arr = [0, 1, 2, 3, 4];
arr.length = 6;
arrs.push(arr);
}
var a = [0, 1, 2, 3, 4];
Object.defineProperty(a, "length", { writable: false, value: 6 });
arrs.push(a);
for (var i = 0, sz = arrs.length; i < sz; i++)
f(arrs[i]);
}
var obj = {};
var arrs, a;
assertThrowsInstanceOf(function() { basic(obj); }, TypeError);
var arrs = obj.arrs;
assertEq(arrs.length, N + 1);
for (var i = 0; i < N; i++)
{
assertEq(arrs[i].length, 5, "unexpected length for arrs[" + i + "]");
assertEq(arrs[i].hasOwnProperty(5), false,
"element not deleted for arrs[" + i + "]");
}
var a = arrs[N];
assertEq(a.hasOwnProperty(5), false);
assertEq(a[5], undefined);
assertEq(a.length, 6);
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