diff options
Diffstat (limited to 'js/xpconnect/tests/unit/test_import_devtools_loader.js')
-rw-r--r-- | js/xpconnect/tests/unit/test_import_devtools_loader.js | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_import_devtools_loader.js b/js/xpconnect/tests/unit/test_import_devtools_loader.js new file mode 100644 index 0000000000..d7e6fe42f6 --- /dev/null +++ b/js/xpconnect/tests/unit/test_import_devtools_loader.js @@ -0,0 +1,85 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +const { AppConstants } = ChromeUtils.importESModule( + "resource://gre/modules/AppConstants.sys.mjs" +); +const { addDebuggerToGlobal } = ChromeUtils.importESModule( + "resource://gre/modules/jsdebugger.sys.mjs" +); +addDebuggerToGlobal(this); + +const ESM_URL = "resource://test/es6module_devtoolsLoader.sys.mjs"; + +// Toggle the following pref to enable Cu.getModuleImportStack() +if (AppConstants.NIGHTLY_BUILD) { + Services.prefs.setBoolPref("browser.startup.record", true); + registerCleanupFunction(() => { + Services.prefs.clearUserPref("browser.startup.record"); + }); +} + +add_task(async function testDevToolsModuleLoader() { + const dbg = new Debugger(); + + const sharedGlobal = Cu.getGlobalForObject(Services); + const sharedPrincipal = Cu.getObjectPrincipal(sharedGlobal); + + info("Test importing in the regular shared loader"); + const ns = ChromeUtils.importESModule(ESM_URL); + Assert.equal(ns.x, 0); + ns.increment(); + Assert.equal(ns.x, 1); + const nsGlobal = Cu.getGlobalForObject(ns); + const nsPrincipal = Cu.getObjectPrincipal(nsGlobal); + Assert.equal(nsGlobal, sharedGlobal, "Without any parameter, importESModule load in the shared JSM global"); + Assert.equal(nsPrincipal, sharedPrincipal); + Assert.ok(nsPrincipal.isSystemPrincipal); + info("Global of ESM loaded in the shared loader can be inspected by the Debugger"); + dbg.addDebuggee(nsGlobal); + Assert.ok(true, "The global is accepted by the Debugger API"); + + const ns1 = ChromeUtils.importESModule(ESM_URL, { loadInDevToolsLoader : false }); + Assert.equal(ns1, ns, "Passing loadInDevToolsLoader=false from the shared JSM global is equivalent to regular importESModule"); + + info("Test importing in the devtools loader"); + const ns2 = ChromeUtils.importESModule(ESM_URL, { loadInDevToolsLoader: true }); + Assert.equal(ns2.x, 0, "We get a new module instance with a new incremented number"); + Assert.notEqual(ns2, ns, "We imported a new instance of the module"); + Assert.notEqual(ns2.importedObject, ns.importedObject, "The two module instances expose distinct objects"); + Assert.equal(ns2.importESModuleTrue, ns2.importedObject, "When using loadInDevToolsLoader:true from a devtools global, we keep loading in the same loader"); + Assert.equal(ns2.importESModuleNull, ns2.importedObject, "When having an undefined loadInDevToolsLoader from a devtools global, we keep loading in the same loader"); + Assert.equal(ns2.importESModuleNull2, ns2.importedObject, "When having no optional argument at all, we keep loading in the same loader"); + Assert.equal(ns2.importESModuleFalse, ns.importedObject, "When passing an explicit loadInDevToolsLoader:false, we load in the shared global, even from a devtools global"); + Assert.equal(ns2.importLazy(), ns2.importedObject, "ChromeUtils.defineESModuleGetters imports will follow the contextual loader"); + + info("When using the devtools loader, we load in a distinct global, but the same compartment"); + const ns2Global = Cu.getGlobalForObject(ns2); + const ns2Principal = Cu.getObjectPrincipal(ns2Global); + Assert.notEqual(ns2Global, sharedGlobal, "The module is loaded in a distinct global"); + Assert.equal(ns2Principal, sharedPrincipal, "The principal is still the shared system principal"); + Assert.equal(Cu.getGlobalForObject(ns2.importedObject), ns2Global, "Nested dependencies are also loaded in the same devtools global"); + Assert.throws(() => dbg.addDebuggee(ns2Global), /TypeError: passing non-debuggable global to addDebuggee/, + "Global os ESM loaded in the devtools loader can't be inspected by the Debugee"); + + info("Re-import the same module in the devtools loader"); + const ns3 = ChromeUtils.importESModule(ESM_URL, { loadInDevToolsLoader: true }); + Assert.equal(ns3, ns2, "We import the exact same module"); + Assert.equal(ns3.importedObject, ns2.importedObject, "The two module expose the same objects"); + + info("Import a module only from the devtools loader"); + const ns4 = ChromeUtils.importESModule("resource://test/es6module_devtoolsLoader_only.js", { loadInDevToolsLoader: true }); + const ns4Global = Cu.getGlobalForObject(ns4); + Assert.equal(ns4Global, ns2Global, "The module is loaded in the same devtools global"); + + // getModuleImportStack only works on nightly builds + if (AppConstants.NIGHTLY_BUILD) { + info("Assert the behavior of getModuleImportStack on modules loaded in the devtools loader"); + Assert.ok(Cu.getModuleImportStack(ESM_URL).includes("testDevToolsModuleLoader")); + Assert.ok(Cu.getModuleImportStack("resource://test/es6module_devtoolsLoader.js").includes("testDevToolsModuleLoader")); + Assert.ok(Cu.getModuleImportStack("resource://test/es6module_devtoolsLoader.js").includes(ESM_URL)); + // Previous import stack were for module loaded via the shared jsm loader. + // Let's also assert that we get stack traces for modules loaded via the devtools loader. + Assert.ok(Cu.getModuleImportStack("resource://test/es6module_devtoolsLoader_only.js").includes("testDevToolsModuleLoader")); + } +}); |