tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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test_ChildCrashHandler.js (3405B)

      1 /* Any copyright is dedicated to the Public Domain.
      2 http://creativecommons.org/publicdomain/zero/1.0/ */
      3 "use strict";
      4 
      5 const lazy = {};
      6 ChromeUtils.defineESModuleGetters(lazy, {
      7  ChildCrashHandler: "resource://gre/modules/ChildCrashHandler.sys.mjs",
      8  EventDispatcher: "resource://gre/modules/Messaging.sys.mjs",
      9 });
     10 
     11 const { makeFakeAppDir } = ChromeUtils.importESModule(
     12  "resource://testing-common/AppData.sys.mjs"
     13 );
     14 
     15 add_setup(async function () {
     16  await makeFakeAppDir();
     17  // The test harness sets MOZ_CRASHREPORTER_NO_REPORT, which disables
     18  // reporting crashes to the user. This test needs them enabled.
     19  const noReport = Services.env.get("MOZ_CRASHREPORTER_NO_REPORT");
     20  Services.env.set("MOZ_CRASHREPORTER_NO_REPORT", "");
     21 
     22  registerCleanupFunction(function () {
     23    Services.env.set("MOZ_CRASHREPORTER_NO_REPORT", noReport);
     24  });
     25 });
     26 
     27 add_task(async function test_remoteType() {
     28  const childID = 123;
     29  const remoteType = "webIsolated=https://example.com";
     30  // Force-set a remote type for the process that we are going to "crash" next.
     31  lazy.ChildCrashHandler.childMap.set(childID, remoteType);
     32 
     33  // Mock a process crash being notified.
     34  const propertyBag = Cc["@mozilla.org/hash-property-bag;1"].createInstance(
     35    Ci.nsIWritablePropertyBag2
     36  );
     37  propertyBag.setPropertyAsBool("abnormal", true);
     38  propertyBag.setPropertyAsAString("dumpID", "a-dump-id");
     39 
     40  // Set up a listener to receive the crash report event emitted by the handler.
     41  let listener;
     42  const crashReportPromise = new Promise(resolve => {
     43    listener = {
     44      onEvent(aEvent, aData) {
     45        resolve([aEvent, aData]);
     46      },
     47    };
     48  });
     49  lazy.EventDispatcher.instance.registerListener(listener, [
     50    "GeckoView:ChildCrashReport",
     51  ]);
     52 
     53  // Simulate a crash.
     54  lazy.ChildCrashHandler.observe(propertyBag, "ipc:content-shutdown", childID);
     55 
     56  const [aEvent, aData] = await crashReportPromise;
     57  Assert.equal(
     58    "GeckoView:ChildCrashReport",
     59    aEvent,
     60    "expected a child crash report"
     61  );
     62  Assert.equal("webIsolated", aData?.remoteType, "expected remote type prefix");
     63 });
     64 
     65 add_task(async function test_extensions_process_crash() {
     66  const childID = 123;
     67  const remoteType = "extension";
     68  // Force-set a remote type for the process that we are going to "crash" next.
     69  lazy.ChildCrashHandler.childMap.set(childID, remoteType);
     70 
     71  // Mock a process crash being notified.
     72  const propertyBag = Cc["@mozilla.org/hash-property-bag;1"].createInstance(
     73    Ci.nsIWritablePropertyBag2
     74  );
     75  propertyBag.setPropertyAsBool("abnormal", true);
     76  propertyBag.setPropertyAsAString("dumpID", "a-dump-id");
     77 
     78  // Set up a listener to receive the crash report event emitted by the handler.
     79  let listener;
     80  const crashReportPromise = new Promise(resolve => {
     81    listener = {
     82      onEvent(aEvent, aData) {
     83        resolve([aEvent, aData]);
     84      },
     85    };
     86  });
     87  lazy.EventDispatcher.instance.registerListener(listener, [
     88    "GeckoView:ChildCrashReport",
     89  ]);
     90 
     91  // Simulate a crash.
     92  lazy.ChildCrashHandler.observe(propertyBag, "ipc:content-shutdown", childID);
     93 
     94  const [aEvent, aData] = await crashReportPromise;
     95  Assert.equal(
     96    "GeckoView:ChildCrashReport",
     97    aEvent,
     98    "expected a child crash report"
     99  );
    100  Assert.equal("extension", aData?.remoteType, "expected remote type");
    101  Assert.equal(
    102    "BACKGROUND_CHILD",
    103    aData?.processVisibility,
    104    "expected process type"
    105  );
    106 });