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// Test array.length setter on non-extensible/sealed/frozen arrays.
"use strict";
load(libdir + "asserts.js");
function testNonExtensible() {
var a = [1, 2, 3, , ,];
Object.preventExtensions(a);
for (var i = 0; i < 10; i++)
a.length = 10;
assertEq(a.length, 10);
for (var i = 0; i < 10; i++)
a.length = 0;
assertEq(a.length, 0);
assertEq(a.toString(), "");
}
testNonExtensible();
function testSealed() {
var a = [1, 2, 3, , ,];
Object.seal(a);
for (var i = 0; i < 10; i++)
a.length = 10;
assertEq(a.length, 10);
for (var i = 0; i < 10; i++)
assertThrowsInstanceOf(() => a.length = 0, TypeError);
assertEq(a.length, 3);
assertEq(a.toString(), "1,2,3");
}
testSealed();
function testFrozen() {
var a = [1, 2, 3, , ,];
Object.freeze(a);
for (var i = 0; i < 10; i++)
assertThrowsInstanceOf(() => a.length = 10, TypeError);
for (var i = 0; i < 10; i++)
assertThrowsInstanceOf(() => a.length = 0, TypeError);
assertEq(a.length, 5);
assertEq(a.toString(), "1,2,3,,");
}
testFrozen();
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