test_require_lazy.js

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/* Any copyright is dedicated to the Public Domain.

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

"use strict";

const { loader } = ChromeUtils.importESModule(

  "resource://devtools/shared/loader/Loader.sys.mjs"

);

// Test devtools.lazyRequireGetter

function run_test() {

  const name = "asyncUtils";

  const path = "devtools/shared/async-utils";

  const o = {};

  loader.lazyRequireGetter(o, name, path);

  const asyncUtils = require(path);

  // XXX: do_check_eq only works on primitive types, so we have this

  // do_check_true of an equality expression.

  Assert.ok(o.asyncUtils === asyncUtils);

  // A non-main loader should get a new object via |lazyRequireGetter|, just

  // as it would via a direct |require|.

  const o2 = {};

  const loader2 = new DevToolsLoader();

  // We have to init the loader by loading any module before

  // lazyRequireGetter is available

  loader2.require("resource://devtools/shared/DevToolsUtils.js");

  loader2.lazyRequireGetter(o2, name, path);

  Assert.ok(o2.asyncUtils !== asyncUtils);

  // A module required via a non-main loader that then uses |lazyRequireGetter|

  // should also get the same object from that non-main loader.

  const exposeLoader = loader2.require("xpcshell-test/exposeLoader");

  const o3 = exposeLoader.exerciseLazyRequire(name, path);

  Assert.ok(o3.asyncUtils === o2.asyncUtils);