load(libdir + "asserts.js"); function f(arr) { arr.pop(); } var N = 100; function test() { // 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 = []; for (var i = 0; i < N; i++) arrs.push([0, 1, 2, 3]); // Test Ion-pop where dense initialized length < length. var a = [0, 1, 2]; a.length = 4; arrs.push(a); for (var i = 0, sz = arrs.length; i < sz; i++) f(arrs[i]); return arrs; } var arrs = test(); assertEq(arrs.length, N + 1); for (var i = 0; i < N; i++) { assertEq(arrs[i].length, 3, "unexpected length for arrs[" + i + "]"); assertEq(arrs[i][0], 0, "bad element for arrs[" + i + "][0]"); assertEq(arrs[i][1], 1, "bad element for arrs[" + i + "][1]"); assertEq(arrs[i][2], 2, "bad element for arrs[" + i + "][2]"); assertEq(3 in arrs[i], false, "shouldn't be a third element"); assertEq(arrs[i][3], undefined); } var a = arrs[N]; assertEq(a.length, 3, "unexpected length for arrs[" + i + "]"); assertEq(a[0], 0, "bad element for arrs[" + i + "][0]"); assertEq(a[1], 1, "bad element for arrs[" + i + "][1]"); assertEq(a[2], 2, "bad element for arrs[" + i + "][2]"); assertEq(3 in a, false, "shouldn't be a third element"); assertEq(a[3], undefined);