mozilla-central/modules/libpref/test/browser/browser_sanitization_events.js (file symbol)

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Test Info: Warnings

"use strict";
const { TelemetryTestUtils } = ChromeUtils.importESModule(
);
// eslint-disable-next-line
const ROOT = getRootDirectory(gTestPath).replace(
);
const PAGE_URL = ROOT + "file_access_sanitized_pref.html";
async function waitForEventCount(
count,
process = "content",
category = "security",
method = "prefUsage"
) {
// eslint-disable-next-line mozilla/no-arbitrary-setTimeout
await new Promise(resolve => setTimeout(resolve, 100));
let returned_events = await TestUtils.waitForCondition(() => {
let events = Services.telemetry.snapshotEvents(
Ci.nsITelemetry.DATASET_PRERELEASE_CHANNELS,
false
)[process];
if (!events) {
return null;
}
events = events.filter(e => e[1] == category && e[2] == method);
dump(`Waiting for ${count} events, got ${events.length}\n`);
return events.length >= count ? events : null;
}, "waiting for telemetry event count of: " + count);
return returned_events;
}
add_task(async function sanitized_pref_test() {
await SpecialPowers.pushPrefEnv({
set: [
["fission.omitBlocklistedPrefsInSubprocesses", true],
["fission.enforceBlocklistedPrefsInSubprocesses", false],
],
});
Services.telemetry.setEventRecordingEnabled("security", true);
Services.telemetry.clearEvents();
TelemetryTestUtils.assertNumberOfEvents(0, { process: "content" });
await BrowserTestUtils.withNewTab(
{ gBrowser, url: PAGE_URL },
async function () {}
);
// Needed because otherwise we advance too quickly
await waitForEventCount(1);
let events = TelemetryTestUtils.getEvents(
{ category: "security", method: "prefUsage", object: "contentProcess" },
{ process: "content" }
);
let count = 0,
foundIt = false;
for (let i = 0; i < events.length; i++) {
if (events[i].value == "extensions.webextensions.uuids") {
foundIt = true;
count++;
}
}
// We may have more than one event entries because we take two paths in the preference code
// in this access pattern, but in other patterns we may only take one of those
// paths, so we happen to count it twice this way. No big deal. Sometimes we even have 4
// or 6 based on timing
dump(
`We found ${events.length} events, ${count} of which were 'extensions.webextensions.uuids'.`
);
// eslint-disable-next-line
Assert.ok(
foundIt,
"We did not find an event for 'extensions.webextensions.uuids'"
);
await SpecialPowers.popPrefEnv();
});