test_objectgrips-nested-proxy.js

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/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

Services.prefs.setBoolPref("security.allow_eval_with_system_principal", true);

registerCleanupFunction(() => {

  Services.prefs.clearUserPref("security.allow_eval_with_system_principal");

});

add_task(

  threadFrontTest(async ({ threadFront, debuggee }) => {

    const packet = await executeOnNextTickAndWaitForPause(

      () => evalCode(debuggee),

      threadFront

);

    const [grip] = packet.frame.arguments;

    const objClient = threadFront.pauseGrip(grip);

    const { proxyTarget, proxyHandler } = await objClient.getProxySlots();

    strictEqual(grip.class, "Proxy", "Its a proxy grip.");

    strictEqual(

      proxyTarget.getGrip().class,

      "Proxy",

      "The target is also a proxy."

);

    strictEqual(

      proxyHandler.getGrip().class,

      "Proxy",

      "The handler is also a proxy."

);

    await threadFront.resume();

})

);

function evalCode(debuggee) {

  debuggee.eval(

    // These arguments are tested.

    // eslint-disable-next-line no-unused-vars

    function stopMe(arg) {

      debugger;

    }.toString()

);

  debuggee.eval(`

    var proxy = new Proxy({}, {});

    for (let i = 0; i < 1e5; ++i)

      proxy = new Proxy(proxy, proxy);

    stopMe(proxy);

`);