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/* Any copyright is dedicated to the Public Domain.
"use strict";
/**
* @type {import("../../../ml/content/EngineProcess.sys.mjs")}
*/
const { EngineProcess } = ChromeUtils.importESModule(
"chrome://global/content/ml/EngineProcess.sys.mjs"
);
const { TranslationsPanelShared } = ChromeUtils.importESModule(
"chrome://browser/content/translations/TranslationsPanelShared.sys.mjs"
);
// Avoid about:blank's non-standard behavior.
const BLANK_PAGE =
"data:text/html;charset=utf-8,<!DOCTYPE html><title>Blank</title>Blank page";
const DIR_PATH = "toolkit/components/translations/tests/browser/";
const ENGLISH_PAGE_URL =
URL_COM_PREFIX + DIR_PATH + "translations-tester-en.html";
const SPANISH_PAGE_URL =
URL_COM_PREFIX + DIR_PATH + "translations-tester-es.html";
const FRENCH_PAGE_URL =
URL_COM_PREFIX + DIR_PATH + "translations-tester-fr.html";
const SPANISH_PAGE_URL_2 =
URL_COM_PREFIX + DIR_PATH + "translations-tester-es-2.html";
const SPANISH_PAGE_URL_DOT_ORG =
URL_ORG_PREFIX + DIR_PATH + "translations-tester-es.html";
const NO_LANGUAGE_URL =
URL_COM_PREFIX + DIR_PATH + "translations-tester-no-tag.html";
const PDF_TEST_PAGE_URL =
URL_COM_PREFIX + DIR_PATH + "translations-tester-pdf-file.pdf";
const SELECT_TEST_PAGE_URL =
URL_COM_PREFIX + DIR_PATH + "translations-tester-select.html";
const TEXT_CLEANING_URL =
URL_COM_PREFIX + DIR_PATH + "translations-text-cleaning.html";
const PIVOT_LANGUAGE = "en";
const LANGUAGE_PAIRS = [
{ fromLang: PIVOT_LANGUAGE, toLang: "es" },
{ fromLang: "es", toLang: PIVOT_LANGUAGE },
{ fromLang: PIVOT_LANGUAGE, toLang: "fr" },
{ fromLang: "fr", toLang: PIVOT_LANGUAGE },
{ fromLang: PIVOT_LANGUAGE, toLang: "uk" },
{ fromLang: "uk", toLang: PIVOT_LANGUAGE },
];
const TRANSLATIONS_PERMISSION = "translations";
const ALWAYS_TRANSLATE_LANGS_PREF =
"browser.translations.alwaysTranslateLanguages";
const NEVER_TRANSLATE_LANGS_PREF =
"browser.translations.neverTranslateLanguages";
/**
* The mochitest runs in the parent process. This function opens up a new tab,
* opens up about:translations, and passes the test requirements into the content process.
*
* @template T
*
* @param {object} options
*
* @param {T} options.dataForContent
* The data must support structural cloning and will be passed into the
* content process.
*
* @param {boolean} [options.disabled]
* Disable the panel through a pref.
*
* @param {Array<{ fromLang: string, toLang: string }>} options.languagePairs
* The translation languages pairs to mock for the test.
*
* @param {Array<[string, string]>} options.prefs
* Prefs to push on for the test.
*
* @param {boolean} [options.autoDownloadFromRemoteSettings=true]
* Initiate the mock model downloads when this function is invoked instead of
* waiting for the resolveDownloads or rejectDownloads to be externally invoked
*
* @returns {object} object
*
* @returns {(args: { dataForContent: T, selectors: Record<string, string> }) => Promise<void>} object.runInPage
* This function must not capture any values, as it will be cloned in the content process.
* Any required data should be passed in using the "dataForContent" parameter. The
* "selectors" property contains any useful selectors for the content.
*
* @returns {() => Promise<void>} object.cleanup
*
* @returns {(count: number) => Promise<void>} object.resolveDownloads
*
* @returns {(count: number) => Promise<void>} object.rejectDownloads
*/
async function openAboutTranslations({
dataForContent,
disabled,
languagePairs = LANGUAGE_PAIRS,
prefs,
autoDownloadFromRemoteSettings = false,
}) {
await SpecialPowers.pushPrefEnv({
set: [
// Enabled by default.
["browser.translations.enable", !disabled],
["browser.translations.logLevel", "All"],
["browser.translations.mostRecentTargetLanguages", ""],
...(prefs ?? []),
],
});
/**
* Collect any relevant selectors for the page here.
*/
const selectors = {
pageHeader: '[data-l10n-id="about-translations-header"]',
fromLanguageSelect: "select#language-from",
toLanguageSelect: "select#language-to",
languageSwapButton: "button#language-swap",
translationTextarea: "textarea#translation-from",
translationResult: "#translation-to",
translationResultBlank: "#translation-to-blank",
translationInfo: "#translation-info",
translationResultsPlaceholder: "#translation-results-placeholder",
noSupportMessage: "[data-l10n-id='about-translations-no-support']",
};
// Start the tab at a blank page.
let tab = await BrowserTestUtils.openNewForegroundTab(
gBrowser,
BLANK_PAGE,
true // waitForLoad
);
const { removeMocks, remoteClients } = await createAndMockRemoteSettings({
languagePairs,
autoDownloadFromRemoteSettings,
});
// Now load the about:translations page, since the actor could be mocked.
BrowserTestUtils.startLoadingURIString(
tab.linkedBrowser,
"about:translations"
);
await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
/**
* @param {number} count - Count of the language pairs expected.
*/
const resolveDownloads = async count => {
await remoteClients.translationsWasm.resolvePendingDownloads(1);
await remoteClients.translationModels.resolvePendingDownloads(
FILES_PER_LANGUAGE_PAIR * count
);
};
/**
* @param {number} count - Count of the language pairs expected.
*/
const rejectDownloads = async count => {
await remoteClients.translationsWasm.rejectPendingDownloads(1);
await remoteClients.translationModels.rejectPendingDownloads(
FILES_PER_LANGUAGE_PAIR * count
);
};
return {
runInPage(callback) {
return ContentTask.spawn(
tab.linkedBrowser,
{ dataForContent, selectors }, // Data to inject.
callback
);
},
async cleanup() {
await loadBlankPage();
BrowserTestUtils.removeTab(tab);
await removeMocks();
await EngineProcess.destroyTranslationsEngine();
await SpecialPowers.popPrefEnv();
},
resolveDownloads,
rejectDownloads,
};
}
/**
* Naively prettify's html based on the opening and closing tags. This is not robust
* for general usage, but should be adequate for these tests.
*
* @param {string} html
* @returns {string}
*/
function naivelyPrettify(html) {
let result = "";
let indent = 0;
function addText(actualEndIndex) {
const text = html.slice(startIndex, actualEndIndex).trim();
if (text) {
for (let i = 0; i < indent; i++) {
result += " ";
}
result += text + "\n";
}
startIndex = actualEndIndex;
}
let startIndex = 0;
let endIndex = 0;
for (; endIndex < html.length; endIndex++) {
if (
html[endIndex] === " " ||
html[endIndex] === "\t" ||
html[endIndex] === "n"
) {
// Skip whitespace.
// " <div>foobar</div>"
// ^^^
startIndex = endIndex;
continue;
}
// Find all of the text.
// "<div>foobar</div>"
// ^^^^^^
while (endIndex < html.length && html[endIndex] !== "<") {
endIndex++;
}
addText(endIndex);
if (html[endIndex] === "<") {
if (html[endIndex + 1] === "/") {
// "<div>foobar</div>"
// ^
while (endIndex < html.length && html[endIndex] !== ">") {
endIndex++;
}
indent--;
addText(endIndex + 1);
} else {
// "<div>foobar</div>"
// ^
while (endIndex < html.length && html[endIndex] !== ">") {
endIndex++;
}
// "<div>foobar</div>"
// ^
addText(endIndex + 1);
indent++;
}
}
}
return result.trim();
}
/**
* Recursively transforms all child nodes to have uppercased text.
*
* @param {Node} node
*/
function upperCaseNode(node) {
if (typeof node.nodeValue === "string") {
node.nodeValue = node.nodeValue.toUpperCase();
}
for (const childNode of node.childNodes) {
upperCaseNode(childNode);
}
}
/**
* Creates a mocked message port for translations.
*
* @returns {MessagePort} This is mocked
*/
function createMockedTranslatorPort(transformNode = upperCaseNode) {
const parser = new DOMParser();
const mockedPort = {
async postMessage(message) {
// Make this response async.
await TestUtils.waitForTick();
switch (message.type) {
case "TranslationsPort:GetEngineStatusRequest":
mockedPort.onmessage({
data: {
type: "TranslationsPort:GetEngineStatusResponse",
status: "ready",
},
});
break;
case "TranslationsPort:TranslationRequest": {
const { messageId, sourceText } = message;
const translatedDoc = parser.parseFromString(sourceText, "text/html");
transformNode(translatedDoc.body);
mockedPort.onmessage({
data: {
type: "TranslationsPort:TranslationResponse",
targetText: translatedDoc.body.innerHTML,
messageId,
},
});
}
}
},
};
return mockedPort;
}
/**
* This mocked translator reports on the batching of calls by replacing the text
* with a letter. Each call of the function moves the letter forward alphabetically.
*
* So consecutive calls would transform things like:
* "First translation" -> "aaaa aaaaaaaaa"
* "Second translation" -> "bbbbb bbbbbbbbb"
* "Third translation" -> "cccc ccccccccc"
*
* This can visually show what the translation batching behavior looks like.
*
* @returns {MessagePort} A mocked port.
*/
function createBatchedMockedTranslatorPort() {
let letter = "a";
/**
* @param {Node} node
*/
function transformNode(node) {
if (typeof node.nodeValue === "string") {
node.nodeValue = node.nodeValue.replace(/\w/g, letter);
}
for (const childNode of node.childNodes) {
transformNode(childNode);
}
}
return createMockedTranslatorPort(node => {
transformNode(node);
letter = String.fromCodePoint(letter.codePointAt(0) + 1);
});
}
/**
* This mocked translator reorders Nodes to be in alphabetical order, and then
* uppercases the text. This allows for testing the reordering behavior of the
* translation engine.
*
* @returns {MessagePort} A mocked port.
*/
function createdReorderingMockedTranslatorPort() {
/**
* @param {Node} node
*/
function transformNode(node) {
if (typeof node.nodeValue === "string") {
node.nodeValue = node.nodeValue.toUpperCase();
}
const nodes = [...node.childNodes];
nodes.sort((a, b) =>
(a.textContent?.trim() ?? "").localeCompare(b.textContent?.trim() ?? "")
);
for (const childNode of nodes) {
childNode.remove();
}
for (const childNode of nodes) {
// Re-append in sorted order.
node.appendChild(childNode);
transformNode(childNode);
}
}
return createMockedTranslatorPort(transformNode);
}
/**
* @returns {import("../../actors/TranslationsParent.sys.mjs").TranslationsParent}
*/
function getTranslationsParent() {
return gBrowser.selectedBrowser.browsingContext.currentWindowGlobal.getActor(
"Translations"
);
}
/**
* Closes all open panels and menu popups related to Translations.
*
* @param {ChromeWindow} [win]
*/
async function closeAllOpenPanelsAndMenus(win) {
await closeFullPagePanelSettingsMenuIfOpen(win);
await closeFullPageTranslationsPanelIfOpen(win);
await closeSelectPanelSettingsMenuIfOpen(win);
await closeSelectTranslationsPanelIfOpen(win);
await closeContextMenuIfOpen(win);
}
/**
* Closes the popup element with the given Id if it is open.
*
* @param {string} popupElementId
* @param {ChromeWindow} [win]
*/
async function closePopupIfOpen(popupElementId, win = window) {
await waitForCondition(async () => {
const popupElement = win.document.getElementById(popupElementId);
if (!popupElement) {
return true;
}
if (popupElement.state === "closed") {
return true;
}
let popuphiddenPromise = BrowserTestUtils.waitForEvent(
popupElement,
"popuphidden"
);
popupElement.hidePopup();
PanelMultiView.hidePopup(popupElement);
await popuphiddenPromise;
return false;
});
}
/**
* Closes the context menu if it is open.
*
* @param {ChromeWindow} [win]
*/
async function closeContextMenuIfOpen(win) {
await closePopupIfOpen("contentAreaContextMenu", win);
}
/**
* Closes the full-page translations panel settings menu if it is open.
*
* @param {ChromeWindow} [win]
*/
async function closeFullPagePanelSettingsMenuIfOpen(win) {
await closePopupIfOpen(
"full-page-translations-panel-settings-menupopup",
win
);
}
/**
* Closes the select translations panel settings menu if it is open.
*
* @param {ChromeWindow} [win]
*/
async function closeSelectPanelSettingsMenuIfOpen(win) {
await closePopupIfOpen("select-translations-panel-settings-menupopup", win);
}
/**
* Closes the translations panel if it is open.
*
* @param {ChromeWindow} [win]
*/
async function closeFullPageTranslationsPanelIfOpen(win) {
await closePopupIfOpen("full-page-translations-panel", win);
}
/**
* Closes the translations panel if it is open.
*
* @param {ChromeWindow} [win]
*/
async function closeSelectTranslationsPanelIfOpen(win) {
await closePopupIfOpen("select-translations-panel", win);
}
/**
* This is for tests that don't need a browser page to run.
*/
async function setupActorTest({
languagePairs,
prefs,
autoDownloadFromRemoteSettings = false,
}) {
await SpecialPowers.pushPrefEnv({
set: [
// Enabled by default.
["browser.translations.enable", true],
["browser.translations.logLevel", "All"],
...(prefs ?? []),
],
});
const { remoteClients, removeMocks } = await createAndMockRemoteSettings({
languagePairs,
autoDownloadFromRemoteSettings,
});
// Create a new tab so each test gets a new actor, and doesn't re-use the old one.
const tab = await BrowserTestUtils.openNewForegroundTab(
gBrowser,
ENGLISH_PAGE_URL,
true // waitForLoad
);
const actor = getTranslationsParent();
return {
actor,
remoteClients,
async cleanup() {
await closeAllOpenPanelsAndMenus();
await loadBlankPage();
await EngineProcess.destroyTranslationsEngine();
BrowserTestUtils.removeTab(tab);
await removeMocks();
TestTranslationsTelemetry.reset();
return SpecialPowers.popPrefEnv();
},
};
}
async function createAndMockRemoteSettings({
languagePairs = LANGUAGE_PAIRS,
autoDownloadFromRemoteSettings = false,
}) {
const remoteClients = {
translationModels: await createTranslationModelsRemoteClient(
autoDownloadFromRemoteSettings,
languagePairs
),
translationsWasm: await createTranslationsWasmRemoteClient(
autoDownloadFromRemoteSettings
),
};
// The TranslationsParent will pull the language pair values from the JSON dump
// of Remote Settings. Clear these before mocking the translations engine.
TranslationsParent.clearCache();
TranslationsPanelShared.clearLanguageListsCache();
TranslationsParent.mockTranslationsEngine(
remoteClients.translationModels.client,
remoteClients.translationsWasm.client
);
return {
async removeMocks() {
await remoteClients.translationModels.client.attachments.deleteAll();
await remoteClients.translationModels.client.db.clear();
await remoteClients.translationsWasm.client.db.clear();
TranslationsParent.unmockTranslationsEngine();
TranslationsParent.clearCache();
TranslationsPanelShared.clearLanguageListsCache();
},
remoteClients,
};
}
/**
* This class mocks the window's A11yUtils to count/capture arguments.
*
* This helps us ensure that the right calls are being made without
* needing to handle whether the accessibility service is enabled in CI,
* and also without needing to worry about if the call itself is broken
* in the accessibility engine, since this is sometimes OS dependent.
*/
class MockedA11yUtils {
/**
* Holds the parameters passed to any calls to announce.
*
* @type {Array<{ raw: string, id: string}>}
*/
static announceCalls = [];
/**
* Mocks the A11yUtils object for the given window, replacing the real A11yUtils with the mock
* and returning a function that will restore the original A11yUtils when called.
*
* @param {object} window - The window for which to mock A11yUtils.
* @returns {Function} - A function to restore A11yUtils to the window.
*/
static mockForWindow(window) {
const realA11yUtils = window.A11yUtils;
window.A11yUtils = MockedA11yUtils;
return () => {
// Restore everything back to normal for this window.
MockedA11yUtils.announceCalls = [];
window.A11yUtils = realA11yUtils;
};
}
/**
* A mocked call to A11yUtils.announce that captures the parameters.
*
* @param {{ raw: string, id: string }}
*/
static announce({ id, raw }) {
MockedA11yUtils.announceCalls.push({ id, raw });
}
/**
* Asserts that the most recent A11yUtils announce call matches the expectations.
*
* @param {object} expectations
* @param {string} expectations.expectedCallNumber - The expected position in the announceCalls array.
* @param {object} expectations.expectedArgs - The expected arguments passed to the most recent announce call.
*/
static assertMostRecentAnnounceCall({ expectedCallNumber, expectedArgs }) {
is(
MockedA11yUtils.announceCalls.length,
expectedCallNumber,
"The most recent A11yUtils announce should match the expected call number."
);
const { id, raw } = MockedA11yUtils.announceCalls.at(-1);
const { id: expectedId, raw: expectedRaw } = expectedArgs;
is(
id,
expectedId,
"A11yUtils announce arg id should match the expected arg id."
);
is(
raw,
expectedRaw,
"A11yUtils announce arg raw should match the expected arg raw."
);
}
}
async function loadTestPage({
languagePairs,
autoDownloadFromRemoteSettings = false,
page,
prefs,
autoOffer,
permissionsUrls,
win = window,
}) {
info(`Loading test page starting at url: ${page}`);
// If there are multiple windows, only do the first time setup on the main window.
const isFirstTimeSetup = win === window;
let remoteClients = null;
let removeMocks = () => {};
const restoreA11yUtils = MockedA11yUtils.mockForWindow(win);
if (isFirstTimeSetup) {
// Ensure no engine is being carried over from a previous test.
await EngineProcess.destroyTranslationsEngine();
Services.fog.testResetFOG();
await SpecialPowers.pushPrefEnv({
set: [
// Enabled by default.
["browser.translations.enable", true],
["browser.translations.logLevel", "All"],
["browser.translations.panelShown", true],
["browser.translations.automaticallyPopup", true],
["browser.translations.alwaysTranslateLanguages", ""],
["browser.translations.neverTranslateLanguages", ""],
["browser.translations.mostRecentTargetLanguages", ""],
// with tab works in tests independent of macOS settings that
// would otherwise disable keyboard navigation at the OS level.
["accessibility.tabfocus_applies_to_xul", false],
...(prefs ?? []),
],
});
await SpecialPowers.pushPermissions(
[
ENGLISH_PAGE_URL,
FRENCH_PAGE_URL,
NO_LANGUAGE_URL,
SPANISH_PAGE_URL,
SPANISH_PAGE_URL_2,
SPANISH_PAGE_URL_DOT_ORG,
...(permissionsUrls || []),
].map(url => ({
type: TRANSLATIONS_PERMISSION,
allow: true,
context: url,
}))
);
const result = await createAndMockRemoteSettings({
languagePairs,
autoDownloadFromRemoteSettings,
});
remoteClients = result.remoteClients;
removeMocks = result.removeMocks;
}
if (autoOffer) {
TranslationsParent.testAutomaticPopup = true;
}
// Start the tab at a blank page.
const tab = await BrowserTestUtils.openNewForegroundTab(
win.gBrowser,
BLANK_PAGE,
true // waitForLoad
);
BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, page);
await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
if (autoOffer && TranslationsParent.shouldAlwaysOfferTranslations()) {
info("Waiting for the popup to be automatically shown.");
await waitForCondition(() => {
const panel = document.getElementById("full-page-translations-panel");
return panel && panel.state === "open";
});
}
return {
tab,
remoteClients,
/**
* Resolves the downloads for the pending count of requested language pairs.
* This should be used when resolving downloads immediately after requesting them.
*
* @see {resolveBulkDownloads} for requesting multiple translations prior to resolving.
*
* @param {number} count - Count of the language pairs expected.
*/
async resolveDownloads(count) {
await remoteClients.translationsWasm.resolvePendingDownloads(1);
await remoteClients.translationModels.resolvePendingDownloads(
FILES_PER_LANGUAGE_PAIR * count
);
},
/**
* Rejects the downloads for the pending count of requested language pairs.
* This should be used when rejecting downloads immediately after requesting them.
*
* @see {resolveBulkDownloads} for requesting multiple translations prior to rejecting.
*
* @param {number} count - Count of the language pairs expected.
*/
async rejectDownloads(count) {
await remoteClients.translationsWasm.rejectPendingDownloads(1);
await remoteClients.translationModels.rejectPendingDownloads(
FILES_PER_LANGUAGE_PAIR * count
);
},
/**
* Resolves downloads for multiple pending translation requests.
*
* @see {resolveDownloads} for resolving downloads for just a single request.
*
* @param {object} expectations
* @param {number} expectations.expectedWasmDownloads
* - The expected count of pending WASM binary download requests.
* @param {number} expectations.expectedLanguagePairDownloads
* - The expected count of language-pair model-download requests.
*/
async resolveBulkDownloads({
expectedWasmDownloads,
expectedLanguagePairDownloads,
}) {
await remoteClients.translationsWasm.resolvePendingDownloads(
expectedWasmDownloads
);
await remoteClients.translationModels.resolvePendingDownloads(
FILES_PER_LANGUAGE_PAIR * expectedLanguagePairDownloads
);
},
/**
* Rejects downloads for multiple pending translation requests.
*
* @see {rejectDownloads} for rejecting downloads for just a single request.
*
* @param {object} expectations
* @param {number} expectations.expectedWasmDownloads
* - The expected count of pending WASM binary download requests.
* @param {number} expectations.expectedLanguagePairDownloads
* - The expected count of language-pair model-download requests.
*/
async rejectBulkDownloads({
expectedWasmDownloads,
expectedLanguagePairDownloads,
}) {
await remoteClients.translationsWasm.rejectPendingDownloads(
expectedWasmDownloads
);
await remoteClients.translationModels.rejectPendingDownloads(
FILES_PER_LANGUAGE_PAIR * expectedLanguagePairDownloads
);
},
/**
* @returns {Promise<void>}
*/
async cleanup() {
await closeAllOpenPanelsAndMenus();
await loadBlankPage();
await EngineProcess.destroyTranslationsEngine();
await removeMocks();
restoreA11yUtils();
Services.fog.testResetFOG();
TranslationsParent.testAutomaticPopup = false;
TranslationsParent.resetHostsOffered();
BrowserTestUtils.removeTab(tab);
TestTranslationsTelemetry.reset();
return Promise.all([
SpecialPowers.popPrefEnv(),
SpecialPowers.popPermissions(),
]);
},
/**
* Runs a callback in the content page. The function's contents are serialized as
* a string, and run in the page. The `translations-test.mjs` module is made
* available to the page.
*
* @param {(TranslationsTest: import("./translations-test.mjs")) => any} callback
* @returns {Promise<void>}
*/
runInPage(callback, data = {}) {
// ContentTask.spawn runs the `Function.prototype.toString` on this function in
// order to send it into the content process. The following function is doing its
// own string manipulation in order to load in the TranslationsTest module.
const fn = new Function(/* js */ `
const TranslationsTest = ChromeUtils.importESModule(
);
// Pass in the values that get injected by the task runner.
TranslationsTest.setup({Assert, ContentTaskUtils, content});
const data = ${JSON.stringify(data)};
return (${callback.toString()})(TranslationsTest, data);
`);
return ContentTask.spawn(
tab.linkedBrowser,
{}, // Data to inject.
fn
);
},
};
}
/**
* Captures any reported errors in the TranslationsParent.
*
* @param {Function} callback
* @returns {Array<{ error: Error, args: any[] }>}
*/
async function captureTranslationsError(callback) {
const { reportError } = TranslationsParent;
let errors = [];
TranslationsParent.reportError = (error, ...args) => {
errors.push({ error, args });
};
await callback();
// Restore the original function.
TranslationsParent.reportError = reportError;
return errors;
}
/**
* Load a test page and run
*
* @param {object} options - The options for `loadTestPage` plus a `runInPage` function.
*/
async function autoTranslatePage(options) {
const { prefs, languagePairs, ...otherOptions } = options;
const fromLangs = languagePairs.map(language => language.fromLang).join(",");
const { cleanup, runInPage } = await loadTestPage({
autoDownloadFromRemoteSettings: true,
prefs: [
["browser.translations.alwaysTranslateLanguages", fromLangs],
...(prefs ?? []),
],
...otherOptions,
});
await runInPage(options.runInPage);
await cleanup();
}
/**
* @typedef {ReturnType<createAttachmentMock>} AttachmentMock
*/
/**
* @param {RemoteSettingsClient} client
* @param {string} mockedCollectionName - The name of the mocked collection without
* the incrementing "id" part. This is provided so that attachments can be asserted
* as being of a certain version.
* @param {boolean} autoDownloadFromRemoteSettings - Skip the manual download process,
* and automatically download the files. Normally it's preferrable to manually trigger
* the downloads to trigger the download behavior, but this flag lets you bypass this
* and automatically download the files.
*/
function createAttachmentMock(
client,
mockedCollectionName,
autoDownloadFromRemoteSettings
) {
const pendingDownloads = [];
client.attachments.download = record =>
new Promise((resolve, reject) => {
console.log("Download requested:", client.collectionName, record.name);
if (autoDownloadFromRemoteSettings) {
const encoder = new TextEncoder();
const { buffer } = encoder.encode(
`Mocked download: ${mockedCollectionName} ${record.name} ${record.version}`
);
resolve({ buffer });
} else {
pendingDownloads.push({ record, resolve, reject });
}
});
function resolvePendingDownloads(expectedDownloadCount) {
info(
`Resolving ${expectedDownloadCount} mocked downloads for "${client.collectionName}"`
);
return downloadHandler(expectedDownloadCount, download =>
download.resolve({ buffer: new ArrayBuffer() })
);
}
async function rejectPendingDownloads(expectedDownloadCount) {
info(
`Intentionally rejecting ${expectedDownloadCount} mocked downloads for "${client.collectionName}"`
);
// Add 1 to account for the original attempt.
const attempts = TranslationsParent.MAX_DOWNLOAD_RETRIES + 1;
return downloadHandler(expectedDownloadCount * attempts, download =>
download.reject(new Error("Intentionally rejecting downloads."))
);
}
async function downloadHandler(expectedDownloadCount, action) {
const names = [];
let maxTries = 100;
while (names.length < expectedDownloadCount && maxTries-- > 0) {
await new Promise(resolve => setTimeout(resolve, 0));
let download = pendingDownloads.shift();
if (!download) {
// Uncomment the following to debug download issues:
// console.log(`No pending download:`, client.collectionName, names.length);
continue;
}
console.log(`Handling download:`, client.collectionName);
action(download);
names.push(download.record.name);
}
// This next check is not guaranteed to catch an unexpected download, but wait
// at least one event loop tick to see if any more downloads were added.
await new Promise(resolve => setTimeout(resolve, 0));
if (pendingDownloads.length) {
throw new Error(
`An unexpected download was found, only expected ${expectedDownloadCount} downloads`
);
}
return names.sort((a, b) => a.localeCompare(b));
}
async function assertNoNewDownloads() {
await new Promise(resolve => setTimeout(resolve, 0));
is(
pendingDownloads.length,
0,
`No downloads happened for "${client.collectionName}"`
);
}
return {
client,
pendingDownloads,
resolvePendingDownloads,
rejectPendingDownloads,
assertNoNewDownloads,
};
}
/**
* The amount of files that are generated per mocked language pair.
*/
const FILES_PER_LANGUAGE_PAIR = 3;
function createRecordsForLanguagePair(fromLang, toLang) {
const records = [];
const lang = fromLang + toLang;
const models = [
{ fileType: "model", name: `model.${lang}.intgemm.alphas.bin` },
{ fileType: "lex", name: `lex.50.50.${lang}.s2t.bin` },
{ fileType: "vocab", name: `vocab.${lang}.spm` },
];
const attachment = {
hash: `${crypto.randomUUID()}`,
size: `123`,
filename: `model.${lang}.intgemm.alphas.bin`,
location: `main-workspace/translations-models/${crypto.randomUUID()}.bin`,
mimetype: "application/octet-stream",
isDownloaded: false,
};
if (models.length !== FILES_PER_LANGUAGE_PAIR) {
throw new Error("Files per language pair was wrong.");
}
for (const { fileType, name } of models) {
records.push({
id: crypto.randomUUID(),
name,
fromLang,
toLang,
fileType,
version: TranslationsParent.LANGUAGE_MODEL_MAJOR_VERSION + ".0",
last_modified: Date.now(),
schema: Date.now(),
attachment: JSON.parse(JSON.stringify(attachment)), // Making a deep copy.
});
}
return records;
}
/**
* Creates a new WASM record for the Bergamot Translator to store in Remote Settings.
*
* @returns {WasmRecord}
*/
function createWasmRecord() {
return {
id: crypto.randomUUID(),
name: "bergamot-translator",
version: TranslationsParent.BERGAMOT_MAJOR_VERSION + ".0",
last_modified: Date.now(),
schema: Date.now(),
};
}
/**
* Increments each time a remote settings client is created to ensure a unique client
* name for each test run.
*/
let _remoteSettingsMockId = 0;
/**
* Creates a local RemoteSettingsClient for use within tests.
*
* @param {boolean} autoDownloadFromRemoteSettings
* @param {object[]} langPairs
* @returns {RemoteSettingsClient}
*/
async function createTranslationModelsRemoteClient(
autoDownloadFromRemoteSettings,
langPairs
) {
const records = [];
for (const { fromLang, toLang } of langPairs) {
records.push(...createRecordsForLanguagePair(fromLang, toLang));
}
const { RemoteSettings } = ChromeUtils.importESModule(
);
const mockedCollectionName = "test-translation-models";
const client = RemoteSettings(
`${mockedCollectionName}-${_remoteSettingsMockId++}`
);
const metadata = {};
await client.db.clear();
await client.db.importChanges(metadata, Date.now(), records);
return createAttachmentMock(
client,
mockedCollectionName,
autoDownloadFromRemoteSettings
);
}
/**
* Creates a local RemoteSettingsClient for use within tests.
*
* @param {boolean} autoDownloadFromRemoteSettings
* @returns {RemoteSettingsClient}
*/
async function createTranslationsWasmRemoteClient(
autoDownloadFromRemoteSettings
) {
const records = [createWasmRecord()];
const { RemoteSettings } = ChromeUtils.importESModule(
);
const mockedCollectionName = "test-translation-wasm";
const client = RemoteSettings(
`${mockedCollectionName}-${_remoteSettingsMockId++}`
);
const metadata = {};
await client.db.clear();
await client.db.importChanges(metadata, Date.now(), records);
return createAttachmentMock(
client,
mockedCollectionName,
autoDownloadFromRemoteSettings
);
}
/**
* Modifies the client's Remote Settings database to create, update, and delete records, then emits
* a "sync" event with the relevant changes for the Remote Settings client.
*
* Asserts that the list of records to create is disjoint from the list of records to delete.
* If your test case needs to create a record and then delete it, do it in separate transactions.
*
* @param {RemoteSettingsClient} remoteSettingsClient - The Remote Settings client whose database will be modified.
* @param {object} options
* @param {TranslationModelRecord[]} [options.recordsToCreate]
* - A list of records to newly create or update. These records are automatically partitioned into
* either the created array or the updated array based on whether they exist in the database yet.
* @param {TranslationModelRecord[]} [options.recordsToDelete]
* - A list of records to delete from the database. Asserts that all of these records exist in the
* database before deleting them.
* @param {number} [options.expectedCreatedRecordsCount]
* - The expected count of records within the recordsToCreate parameter that are new to the database.
* @param {number} [options.expectedUpdatedRecordsCount]
* - The expected count of records within the recordsToCreate parameter that are already in the database.
* @param {number} [options.expectedDeletedRecordsCount]
* - The expected count of records within the recordsToDelete parameter that are already in the database.
*/
async function modifyRemoteSettingsRecords(
remoteSettingsClient,
{
recordsToCreate = [],
recordsToDelete = [],
expectedCreatedRecordsCount = 0,
expectedUpdatedRecordsCount = 0,
expectedDeletedRecordsCount = 0,
}
) {
for (const recordToCreate of recordsToCreate) {
for (const recordToDelete of recordsToDelete) {
isnot(
recordToCreate.id,
recordToDelete.id,
`Attempt to both create and delete the same record from Remote Settings database: '${recordToCreate.name}'`
);
}
}
let created = [];
let updated = [];
let deleted = [];
const existingRecords = await remoteSettingsClient.get();
for (const newRecord of recordsToCreate) {
const existingRecord = existingRecords.find(
existingRecord => existingRecord.id === newRecord.id
);
if (existingRecord) {
updated.push({
old: existingRecord,
new: newRecord,
});
} else {
created.push(newRecord);
}
}
if (recordsToCreate.length) {
info("Storing new and updated records in mocked Remote Settings database");
await remoteSettingsClient.db.importChanges(
/* metadata */ {},
Date.now(),
recordsToCreate
);
}
if (recordsToDelete.length) {
info("Storing new and updated records in mocked Remote Settings database");
for (const recordToDelete of recordsToDelete) {
ok(
existingRecords.find(
existingRecord => existingRecord.id === recordToDelete.id
),
`The record to delete '${recordToDelete.name}' should be found in the database.`
);
await remoteSettingsClient.db.delete(recordToDelete.id);
deleted.push(recordToDelete);
}
}
is(
created.length,
expectedCreatedRecordsCount,
"Expected the correct number of created records"
);
is(
updated.length,
expectedUpdatedRecordsCount,
"Expected the correct number of updated records"
);
is(
deleted.length,
expectedDeletedRecordsCount,
"Expected the correct number of deleted records"
);
info('Emitting a remote client "sync" event.');
await remoteSettingsClient.emit("sync", {
data: {
created,
updated,
deleted,
},
});
}
async function selectAboutPreferencesElements() {
const document = gBrowser.selectedBrowser.contentDocument;
const settingsButton = document.getElementById(
"translations-manage-settings-button"
);
const rows = await waitForCondition(() => {
const elements = document.querySelectorAll(".translations-manage-language");
if (elements.length !== 4) {
return false;
}
return elements;
}, "Waiting for manage language rows.");
const [downloadAllRow, frenchRow, spanishRow, ukrainianRow] = rows;
const downloadAllLabel = downloadAllRow.querySelector("label");
const downloadAll = downloadAllRow.querySelector(
"#translations-manage-install-all"
);
const deleteAll = downloadAllRow.querySelector(
"#translations-manage-delete-all"
);
const frenchLabel = frenchRow.querySelector("label");
const frenchDownload = frenchRow.querySelector(
`[data-l10n-id="translations-manage-language-download-button"]`
);
const frenchDelete = frenchRow.querySelector(
`[data-l10n-id="translations-manage-language-remove-button"]`
);
const spanishLabel = spanishRow.querySelector("label");
const spanishDownload = spanishRow.querySelector(
`[data-l10n-id="translations-manage-language-download-button"]`
);
const spanishDelete = spanishRow.querySelector(
`[data-l10n-id="translations-manage-language-remove-button"]`
);
const ukrainianLabel = ukrainianRow.querySelector("label");
const ukrainianDownload = ukrainianRow.querySelector(
`[data-l10n-id="translations-manage-language-download-button"]`
);
const ukrainianDelete = ukrainianRow.querySelector(
`[data-l10n-id="translations-manage-language-remove-button"]`
);
return {
document,
downloadAllLabel,
downloadAll,
deleteAll,
frenchLabel,
frenchDownload,
frenchDelete,
ukrainianLabel,
ukrainianDownload,
ukrainianDelete,
settingsButton,
spanishLabel,
spanishDownload,
spanishDelete,
};
}
function click(button, message) {
info(message);
if (button.hidden) {
throw new Error("The button was hidden when trying to click it.");
}
button.click();
}
function hitEnterKey(button, message) {
info(message);
button.dispatchEvent(
new KeyboardEvent("keypress", {
key: "Enter",
keyCode: KeyboardEvent.DOM_VK_RETURN,
})
);
}
/**
* Similar to assertVisibility, but is asynchronous and attempts
* to wait for the elements to match the expected states if they
* do not already.
*
* @see assertVisibility
*
* @param {object} options
* @param {string} options.message
* @param {Record<string, Element[]>} options.visible
* @param {Record<string, Element[]>} options.hidden
*/
async function ensureVisibility({ message = null, visible = {}, hidden = {} }) {
try {
// First wait for the condition to be met.
await waitForCondition(() => {
for (const element of Object.values(visible)) {
if (BrowserTestUtils.isHidden(element)) {
return false;
}
}
for (const element of Object.values(hidden)) {
if (BrowserTestUtils.isVisible(element)) {
return false;
}
}
return true;
});
} catch (error) {
// Ignore, this will get caught below.
}
// Now report the conditions.
assertVisibility({ message, visible, hidden });
}
/**
* Asserts that the provided elements are either visible or hidden.
*
* @param {object} options
* @param {string} options.message
* @param {Record<string, Element[]>} options.visible
* @param {Record<string, Element[]>} options.hidden
*/
function assertVisibility({ message = null, visible = {}, hidden = {} }) {
if (message) {
info(message);
}
for (const [name, element] of Object.entries(visible)) {
ok(BrowserTestUtils.isVisible(element), `${name} is visible.`);
}
for (const [name, element] of Object.entries(hidden)) {
ok(BrowserTestUtils.isHidden(element), `${name} is hidden.`);
}
}
async function setupAboutPreferences(
languagePairs,
{ prefs = [], permissionsUrls = [] } = {}
) {
await SpecialPowers.pushPrefEnv({
set: [
// Enabled by default.
["browser.translations.enable", true],
["browser.translations.logLevel", "All"],
...prefs,
],
});
await SpecialPowers.pushPermissions(
permissionsUrls.map(url => ({
type: TRANSLATIONS_PERMISSION,
allow: true,
context: url,
}))
);
const tab = await BrowserTestUtils.openNewForegroundTab(
gBrowser,
BLANK_PAGE,
true // waitForLoad
);
let initTranslationsEvent;
if (Services.prefs.getBoolPref("browser.translations.newSettingsUI.enable")) {
initTranslationsEvent = BrowserTestUtils.waitForEvent(
document,
"translationsSettingsInit"
);
}
const { remoteClients, removeMocks } = await createAndMockRemoteSettings({
languagePairs,
});
BrowserTestUtils.startLoadingURIString(
tab.linkedBrowser,
"about:preferences"
);
await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
const elements = await selectAboutPreferencesElements();
if (Services.prefs.getBoolPref("browser.translations.newSettingsUI.enable")) {
await initTranslationsEvent;
}
async function cleanup() {
await closeAllOpenPanelsAndMenus();
await loadBlankPage();
await EngineProcess.destroyTranslationsEngine();
BrowserTestUtils.removeTab(tab);
await removeMocks();
await SpecialPowers.popPrefEnv();
TestTranslationsTelemetry.reset();
}
return {
cleanup,
remoteClients,
elements,
};
}
function waitForAppLocaleChanged() {
new Promise(resolve => {
function onChange() {
Services.obs.removeObserver(onChange, "intl:app-locales-changed");
resolve();
}
Services.obs.addObserver(onChange, "intl:app-locales-changed");
});
}
async function mockLocales({ systemLocales, appLocales, webLanguages }) {
if (systemLocales) {
TranslationsParent.mockedSystemLocales = systemLocales;
}
const { availableLocales, requestedLocales } = Services.locale;
if (appLocales) {
const appLocaleChanged = waitForAppLocaleChanged();
info("Mocking locales, so expect potential .ftl resource errors.");
Services.locale.availableLocales = appLocales;
Services.locale.requestedLocales = appLocales;
await appLocaleChanged;
}
if (webLanguages) {
await SpecialPowers.pushPrefEnv({
set: [["intl.accept_languages", webLanguages.join(",")]],
});
}
return async () => {
// Reset back to the originals.
if (systemLocales) {
TranslationsParent.mockedSystemLocales = null;
}
if (appLocales) {
const appLocaleChanged = waitForAppLocaleChanged();
Services.locale.availableLocales = availableLocales;
Services.locale.requestedLocales = requestedLocales;
await appLocaleChanged;
}
if (webLanguages) {
await SpecialPowers.popPrefEnv();
}
};
}
/**
* Helpful test functions for translations telemetry
*/
class TestTranslationsTelemetry {
static #previousFlowId = null;
static reset() {
TestTranslationsTelemetry.#previousFlowId = null;
}
/**
* Asserts qualities about a counter telemetry metric.
*
* @param {string} name - The name of the metric.
* @param {object} counter - The Glean counter object.
* @param {object} expectedCount - The expected value of the counter.
*/
static async assertCounter(name, counter, expectedCount) {
// Ensures that glean metrics are collected from all child processes
// so that calls to testGetValue() are up to date.
await Services.fog.testFlushAllChildren();
const count = counter.testGetValue() ?? 0;
is(
count,
expectedCount,
`Telemetry counter ${name} should have expected count`
);
}
/**
* Asserts that a counter with the given label matches the expected count for that label.
*
* @param {object} counter - The Glean counter object.
* @param {Array<Array<string | number>>} expectations - An array of string/number pairs for the label and expected count.
*/
static async assertLabeledCounter(counter, expectations) {
for (const [label, expectedCount] of expectations) {
await Services.fog.testFlushAllChildren();
const count = counter[label].testGetValue() ?? 0;
is(
count,
expectedCount,
`Telemetry counter with label ${label} should have expected count.`
);
}
}
/**
* Asserts qualities about an event telemetry metric.
*
* @param {object} event - The Glean event object.
* @param {object} expectations - The test expectations.
* @param {number} expectations.expectedEventCount - The expected count of events.
* @param {boolean} expectations.expectNewFlowId
* @param {Record<string, string | boolean | number>} [expectations.assertForAllEvents]
* - A record of key-value pairs to assert against all events in this category.
* @param {Record<string, string | boolean | number>} [expectations.assertForMostRecentEvent]
* - A record of key-value pairs to assert against the most recently recorded event in this category.
*/
static async assertEvent(
event,
{
expectedEventCount,
expectNewFlowId = null,
assertForAllEvents = {},
assertForMostRecentEvent = {},
}
) {
// Ensures that glean metrics are collected from all child processes
// so that calls to testGetValue() are up to date.
await Services.fog.testFlushAllChildren();
const events = event.testGetValue() ?? [];
const eventCount = events.length;
const name =
eventCount > 0 ? `${events[0].category}.${events[0].name}` : null;
if (eventCount > 0 && expectNewFlowId !== null) {
const flowId = events[eventCount - 1].extra.flow_id;
if (expectNewFlowId) {
is(
events[eventCount - 1].extra.flow_id !==
TestTranslationsTelemetry.#previousFlowId,
true,
`The newest flowId ${flowId} should be different than the previous flowId ${
TestTranslationsTelemetry.#previousFlowId
}`
);
} else {
is(
events[eventCount - 1].extra.flow_id ===
TestTranslationsTelemetry.#previousFlowId,
true,
`The newest flowId ${flowId} should be equal to the previous flowId ${
TestTranslationsTelemetry.#previousFlowId
}`
);
}
TestTranslationsTelemetry.#previousFlowId = flowId;
}
if (eventCount !== expectedEventCount) {
console.error("Actual events:", events);
}
is(
eventCount,
expectedEventCount,
`There should be ${expectedEventCount} telemetry events of type ${name}`
);
if (Object.keys(assertForAllEvents).length !== 0) {
is(
eventCount > 0,
true,
`Telemetry event ${name} should contain values if assertForMostRecentEvent are specified`
);
for (const [key, expectedEntry] of Object.entries(
assertForMostRecentEvent
)) {
for (const event of events) {
is(
event.extra[key],
String(expectedEntry),
`Telemetry event ${name} value for ${key} should match the expected entry`
);
}
}
}
if (Object.keys(assertForMostRecentEvent).length !== 0) {
is(
eventCount > 0,
true,
`Telemetry event ${name} should contain values if assertForMostRecentEvent are specified`
);
for (const [key, expectedEntry] of Object.entries(
assertForMostRecentEvent
)) {
is(
events[eventCount - 1].extra[key],
String(expectedEntry),
`Telemetry event ${name} value for ${key} should match the expected entry`
);
}
}
}
/**
* Asserts qualities about a rate telemetry metric.
*
* @param {string} name - The name of the metric.
* @param {object} rate - The Glean rate object.
* @param {object} expectations - The test expectations.
* @param {number} expectations.expectedNumerator - The expected value of the numerator.
* @param {number} expectations.expectedDenominator - The expected value of the denominator.
*/
static async assertRate(
name,
rate,
{ expectedNumerator, expectedDenominator }
) {
// Ensures that glean metrics are collected from all child processes
// so that calls to testGetValue() are up to date.
await Services.fog.testFlushAllChildren();
const { numerator = 0, denominator = 0 } = rate.testGetValue() ?? {};
is(
numerator,
expectedNumerator,
`Telemetry rate ${name} should have expected numerator`
);
is(
denominator,
expectedDenominator,
`Telemetry rate ${name} should have expected denominator`
);
}
}
/**
* Provide longer defaults for the waitForCondition.
*
* @param {Function} callback
* @param {string} message
*/
function waitForCondition(callback, message) {
const interval = 100;
// Use 4 times the defaults to guard against intermittents. Many of the tests rely on
// communication between the parent and child process, which is inherently async.
const maxTries = 50 * 4;
return TestUtils.waitForCondition(callback, message, interval, maxTries);
}
/**
* Retrieves the always-translate language list as an array.
*
* @returns {Array<string>}
*/
function getAlwaysTranslateLanguagesFromPref() {
let langs = Services.prefs.getCharPref(ALWAYS_TRANSLATE_LANGS_PREF);
return langs ? langs.split(",") : [];
}
/**
* Retrieves the never-translate language list as an array.
*
* @returns {Array<string>}
*/
function getNeverTranslateLanguagesFromPref() {
let langs = Services.prefs.getCharPref(NEVER_TRANSLATE_LANGS_PREF);
return langs ? langs.split(",") : [];
}
/**
* Retrieves the never-translate site list as an array.
*
* @returns {Array<string>}
*/
function getNeverTranslateSitesFromPerms() {
let results = [];
for (let perm of Services.perms.all) {
if (
perm.type == TRANSLATIONS_PERMISSION &&
perm.capability == Services.perms.DENY_ACTION
) {
results.push(perm.principal);
}
}
return results;
}
/**
* Opens a dialog window for about:preferences
*
* @param {string} dialogUrl - The URL of the dialog window
* @param {Function} callback - The function to open the dialog via UI
* @returns {object} The dialog window object
*/
async function waitForOpenDialogWindow(dialogUrl, callback) {
const dialogLoaded = promiseLoadSubDialog(dialogUrl);
await callback();
const dialogWindow = await dialogLoaded;
return dialogWindow;
}
/**
* Closes an open dialog window and waits for it to close.
*
* @param {object} dialogWindow
*/
async function waitForCloseDialogWindow(dialogWindow) {
const closePromise = BrowserTestUtils.waitForEvent(
content.gSubDialog._dialogStack,
"dialogclose"
);
dialogWindow.close();
await closePromise;
}
// Extracted from https://searchfox.org/mozilla-central/rev/40ef22080910c2e2c27d9e2120642376b1d8b8b2/browser/components/preferences/in-content/tests/head.js#41
function promiseLoadSubDialog(aURL) {
return new Promise(resolve => {
content.gSubDialog._dialogStack.addEventListener(
"dialogopen",
function dialogopen(aEvent) {
if (
aEvent.detail.dialog._frame.contentWindow.location == "about:blank"
) {
return;
}
content.gSubDialog._dialogStack.removeEventListener(
"dialogopen",
dialogopen
);
Assert.equal(
aEvent.detail.dialog._frame.contentWindow.location.toString(),
aURL,
"Check the proper URL is loaded"
);
// Check visibility
isnot(
aEvent.detail.dialog._overlay,
null,
"Element should not be null, when checking visibility"
);
Assert.ok(
!BrowserTestUtils.isHidden(aEvent.detail.dialog._overlay),
"The element is visible"
);
// Check that stylesheets were injected
let expectedStyleSheetURLs =
aEvent.detail.dialog._injectedStyleSheets.slice(0);
for (let styleSheet of aEvent.detail.dialog._frame.contentDocument
.styleSheets) {
let i = expectedStyleSheetURLs.indexOf(styleSheet.href);
if (i >= 0) {
info("found " + styleSheet.href);
expectedStyleSheetURLs.splice(i, 1);
}
}
Assert.equal(
expectedStyleSheetURLs.length,
0,
"All expectedStyleSheetURLs should have been found"
);
// Wait for the next event tick to make sure the remaining part of the
// testcase runs after the dialog gets ready for input.
executeSoon(() => resolve(aEvent.detail.dialog._frame.contentWindow));
}
);
});
}
/**
* Loads the blank-page URL.
*
* This is useful for resetting the state during cleanup, and also
* before starting a test, to further help ensure that there is no
* unintentional state left over from test case.
*/
async function loadBlankPage() {
BrowserTestUtils.startLoadingURIString(gBrowser.selectedBrowser, BLANK_PAGE);
await BrowserTestUtils.browserLoaded(gBrowser.selectedBrowser);
}
/**
* Destroys the Translations Engine process.
*/
async function destroyTranslationsEngine() {
await EngineProcess.destroyTranslationsEngine();
}