1 /* Any copyright is dedicated to the Public Domain.
2 * http://creativecommons.org/publicdomain/zero/1.0/ */
4 const { AppConstants } = ChromeUtils.importESModule(
5 "resource://gre/modules/AppConstants.sys.mjs"
7 const { addDebuggerToGlobal } = ChromeUtils.importESModule(
8 "resource://gre/modules/jsdebugger.sys.mjs"
10 addDebuggerToGlobal(this);
12 const ESM_URL = "resource://test/es6module_devtoolsLoader.sys.mjs";
14 // Toggle the following pref to enable Cu.getModuleImportStack()
15 if (AppConstants.NIGHTLY_BUILD) {
16 Services.prefs.setBoolPref("browser.startup.record", true);
17 registerCleanupFunction(() => {
18 Services.prefs.clearUserPref("browser.startup.record");
22 add_task(async function testDevToolsModuleLoader() {
23 const dbg = new Debugger();
25 const sharedGlobal = Cu.getGlobalForObject(Services);
26 const sharedPrincipal = Cu.getObjectPrincipal(sharedGlobal);
28 info("Test importing in the regular shared loader");
29 const ns = ChromeUtils.importESModule(ESM_URL);
30 Assert.equal(ns.x, 0);
32 Assert.equal(ns.x, 1);
33 const nsGlobal = Cu.getGlobalForObject(ns);
34 const nsPrincipal = Cu.getObjectPrincipal(nsGlobal);
35 Assert.equal(nsGlobal, sharedGlobal, "Without any parameter, importESModule load in the shared JSM global");
36 Assert.equal(nsPrincipal, sharedPrincipal);
37 Assert.ok(nsPrincipal.isSystemPrincipal);
38 info("Global of ESM loaded in the shared loader can be inspected by the Debugger");
39 dbg.addDebuggee(nsGlobal);
40 Assert.ok(true, "The global is accepted by the Debugger API");
42 const ns1 = ChromeUtils.importESModule(ESM_URL, { global: "shared" });
43 Assert.equal(ns1, ns, "Passing global: 'shared' from the shared JSM global is equivalent to regular importESModule");
45 info("Test importing in the devtools loader");
46 const ns2 = ChromeUtils.importESModule(ESM_URL, { global: "devtools" });
47 Assert.equal(ns2.x, 0, "We get a new module instance with a new incremented number");
48 Assert.notEqual(ns2, ns, "We imported a new instance of the module");
49 Assert.notEqual(ns2.importedObject, ns.importedObject, "The two module instances expose distinct objects");
50 Assert.equal(ns2.importESModuleDevTools, ns2.importedObject, "When using global: 'devtools' from a devtools global, we keep loading in the same loader");
51 Assert.equal(ns2.importESModuleCurrent, ns2.importedObject, "When using global: 'current' from a devtools global, we keep loading in the same loader");
52 Assert.equal(ns2.importESModuleContextual, ns2.importedObject, "When using global: 'contextual' from a devtools global, we keep loading in the same loader");
53 Assert.ok(ns2.importESModuleNoOptionFailed1, "global option is required in DevTools global");
54 Assert.ok(ns2.importESModuleNoOptionFailed2, "global option is required in DevTools global");
55 Assert.equal(ns2.importESModuleShared, ns.importedObject, "When passing global: 'shared', we load in the shared global, even from a devtools global");
57 Assert.equal(ns2.importLazyDevTools(), ns2.importedObject, "When using global: 'devtools' from a devtools global, we keep loading in the same loader");
58 Assert.equal(ns2.importLazyCurrent(), ns2.importedObject, "When using global: 'current' from a devtools global, we keep loading in the same loader");
59 Assert.equal(ns2.importLazyContextual(), ns2.importedObject, "When using global: 'contextual' from a devtools global, we keep loading in the same loader");
60 Assert.ok(ns2.importLazyNoOptionFailed1, "global option is required in DevTools global");
61 Assert.ok(ns2.importLazyNoOptionFailed2, "global option is required in DevTools global");
62 Assert.equal(ns2.importLazyShared(), ns.importedObject, "When passing global: 'shared', we load in the shared global, even from a devtools global");
64 info("When using the devtools loader, we load in a distinct global, but the same compartment");
65 const ns2Global = Cu.getGlobalForObject(ns2);
66 const ns2Principal = Cu.getObjectPrincipal(ns2Global);
67 Assert.notEqual(ns2Global, sharedGlobal, "The module is loaded in a distinct global");
68 Assert.equal(ns2Principal, sharedPrincipal, "The principal is still the shared system principal");
69 Assert.equal(Cu.getGlobalForObject(ns2.importedObject), ns2Global, "Nested dependencies are also loaded in the same devtools global");
70 Assert.throws(() => dbg.addDebuggee(ns2Global), /TypeError: passing non-debuggable global to addDebuggee/,
71 "Global os ESM loaded in the devtools loader can't be inspected by the Debugee");
73 info("Re-import the same module in the devtools loader");
74 const ns3 = ChromeUtils.importESModule(ESM_URL, { global: "devtools" });
75 Assert.equal(ns3, ns2, "We import the exact same module");
76 Assert.equal(ns3.importedObject, ns2.importedObject, "The two module expose the same objects");
78 info("Import a module only from the devtools loader");
79 const ns4 = ChromeUtils.importESModule("resource://test/es6module_devtoolsLoader_only.js", { global: "devtools" });
80 const ns4Global = Cu.getGlobalForObject(ns4);
81 Assert.equal(ns4Global, ns2Global, "The module is loaded in the same devtools global");
83 // getModuleImportStack only works on nightly builds
84 if (AppConstants.NIGHTLY_BUILD) {
85 info("Assert the behavior of getModuleImportStack on modules loaded in the devtools loader");
86 Assert.ok(Cu.getModuleImportStack(ESM_URL).includes("testDevToolsModuleLoader"));
87 Assert.ok(Cu.getModuleImportStack("resource://test/es6module_devtoolsLoader.js").includes("testDevToolsModuleLoader"));
88 Assert.ok(Cu.getModuleImportStack("resource://test/es6module_devtoolsLoader.js").includes(ESM_URL));
89 // Previous import stack were for module loaded via the shared jsm loader.
90 // Let's also assert that we get stack traces for modules loaded via the devtools loader.
91 Assert.ok(Cu.getModuleImportStack("resource://test/es6module_devtoolsLoader_only.js").includes("testDevToolsModuleLoader"));