"use strict"; /* globals exportFunction */ /* eslint-disable mozilla/balanced-listeners */ const server = createHttpServer({ hosts: ["example.com", "example.org"] }); server.registerPathHandler("/dummy", (request, response) => { response.setStatusLine(request.httpVersion, 200, "OK"); response.setHeader("Content-Type", "text/html", false); response.write(""); }); server.registerPathHandler("/bfcachetestpage", (request, response) => { response.setStatusLine(request.httpVersion, 200, "OK"); response.setHeader("Content-Type", "text/html;charset=utf-8", false); response.write(` `); }); add_task(async function test_contentscript_context_isolation() { function contentScript() { browser.test.sendMessage("content-script-ready"); exportFunction(browser.test.sendMessage, window, { defineAs: "browserTestSendMessage", }); window.addEventListener("pageshow", () => { browser.test.fail( "pageshow should have been suppressed by stopImmediatePropagation" ); }); window.addEventListener( "pagehide", () => { browser.test.fail( "pagehide should have been suppressed by stopImmediatePropagation" ); }, true ); } let extension = ExtensionTestUtils.loadExtension({ manifest: { content_scripts: [ { matches: ["http://example.com/bfcachetestpage"], js: ["content_script.js"], }, ], }, files: { "content_script.js": contentScript, }, }); let contentPage = await ExtensionTestUtils.loadContentPage( "http://example.com/bfcachetestpage" ); await extension.startup(); await extension.awaitMessage("content-script-ready"); // Get the content script context and check that it points to the correct window. await contentPage.legacySpawn(extension.id, async extensionId => { const { ExtensionContent } = ChromeUtils.importESModule( "resource://gre/modules/ExtensionContent.sys.mjs" ); this.context = ExtensionContent.getContextByExtensionId( extensionId, this.content ); Assert.ok(this.context, "Got content script context"); Assert.equal( this.context.contentWindow, this.content, "Context's contentWindow property is correct" ); // Navigate so that the content page is hidden in the bfcache. this.content.location = "http://example.org/dummy?noscripthere1"; }); await extension.awaitMessage("content-script-hide"); await contentPage.legacySpawn(null, async () => { Assert.equal( this.context.contentWindow, null, "Context's contentWindow property is null" ); Assert.ok(this.context.sandbox, "Context's sandbox exists"); // Navigate back so the content page is resurrected from the bfcache. this.content.history.back(); }); await extension.awaitMessage("content-script-show"); async function testWithoutBfcache() { return contentPage.legacySpawn(null, async () => { Assert.equal( this.context.contentWindow, this.content, "Context's contentWindow property is correct" ); Assert.ok(this.context.sandbox, "Context's sandbox exists before unload"); let contextUnloadedPromise = new Promise(resolve => { this.context.callOnClose({ close: resolve }); }); // Now add an "unload" event listener, which should prevent a page from entering the bfcache. await new Promise(resolve => { this.content.addEventListener("unload", () => { Assert.equal( this.context.contentWindow, this.content, "Context's contentWindow property should be non-null at unload" ); resolve(); }); this.content.location = "http://example.org/dummy?noscripthere2"; }); await contextUnloadedPromise; }); } await runWithPrefs( [["docshell.shistory.bfcache.allow_unload_listeners", false]], testWithoutBfcache ); await extension.awaitMessage("content-script-unload"); await contentPage.legacySpawn(null, async () => { Assert.equal( this.context.sandbox, null, "Context's sandbox has been destroyed after unload" ); }); await contentPage.close(); await extension.unload(); });