test_deepFreezeClone.js

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function checkThrows(f, rgxp) { try { f(); do_check_false(); } catch (e) { Assert.ok(rgxp.test(e)); } }

var o = { foo: 42, bar : { tick: 'tock' } };

function checkClone(clone, frozen) {

  var waived = Cu.waiveXrays(clone);

  function touchFoo() { "use strict"; waived.foo = 12; Assert.equal(waived.foo, 12); }

  function touchBar() { "use strict"; waived.bar.tick = 'tack'; Assert.equal(waived.bar.tick, 'tack'); }

  function addProp() { "use strict"; waived.newProp = 100; Assert.equal(waived.newProp, 100); }

  if (!frozen) {

    touchFoo();

    touchBar();

    addProp();

  } else {

    checkThrows(touchFoo, /read-only/);

    checkThrows(touchBar, /read-only/);

    checkThrows(addProp, /extensible/);

  var desc = Object.getOwnPropertyDescriptor(waived, 'foo');

  Assert.equal(desc.writable, !frozen);

  Assert.equal(desc.configurable, !frozen);

  desc = Object.getOwnPropertyDescriptor(waived.bar, 'tick');

  Assert.equal(desc.writable, !frozen);

  Assert.equal(desc.configurable, !frozen);

function run_test() {

  var sb = new Cu.Sandbox(null);

  checkClone(Cu.waiveXrays(Cu.cloneInto(o, sb)), false);

  checkClone(Cu.cloneInto(o, sb, { deepFreeze: true }), true);