tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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test_objectgrips-sparse-array.js (1134B)

      1 /* Any copyright is dedicated to the Public Domain.
      2   http://creativecommons.org/publicdomain/zero/1.0/ */
      3 
      4 "use strict";
      5 
      6 Services.prefs.setBoolPref("security.allow_eval_with_system_principal", true);
      7 registerCleanupFunction(() => {
      8  Services.prefs.clearUserPref("security.allow_eval_with_system_principal");
      9 });
     10 
     11 add_task(
     12  threadFrontTest(async ({ threadFront, debuggee }) => {
     13    const packet = await executeOnNextTickAndWaitForPause(
     14      () => evalCode(debuggee),
     15      threadFront
     16    );
     17 
     18    const [grip] = packet.frame.arguments;
     19    await threadFront.resume();
     20 
     21    strictEqual(grip.class, "Array", "The grip has an Array class");
     22 
     23    const { items } = grip.preview;
     24    strictEqual(items[0], null, "The empty slot has null as grip preview");
     25    deepEqual(
     26      items[1],
     27      { type: "undefined" },
     28      "The undefined value has grip value of type undefined"
     29    );
     30  })
     31 );
     32 
     33 function evalCode(debuggee) {
     34  debuggee.eval(
     35    // These arguments are tested.
     36    // eslint-disable-next-line no-unused-vars
     37    function stopMe(arr) {
     38      debugger;
     39    }.toString()
     40  );
     41  debuggee.eval("stopMe([, undefined])");
     42 }