"use strict"; const server = createHttpServer({ hosts: ["example.com"] }); server.registerDirectory("/data/", do_get_file("data")); add_task(async function test_contentscript_api_injection() { let extensionData = { manifest: { content_scripts: [ { matches: ["http://example.com/data/file_sample.html"], js: ["content_script.js"], }, ], web_accessible_resources: ["content_script_iframe.html"], }, files: { "content_script.js"() { let iframe = document.createElement("iframe"); iframe.src = browser.runtime.getURL("content_script_iframe.html"); document.body.appendChild(iframe); }, "content_script_iframe.js"() { window.location = `http://example.com/data/file_privilege_escalation.html`; }, "content_script_iframe.html": ` `, }, }; let extension = ExtensionTestUtils.loadExtension(extensionData); let awaitConsole = new Promise(resolve => { Services.console.registerListener(function listener(message) { if (/WebExt Privilege Escalation/.test(message.message)) { Services.console.unregisterListener(listener); resolve(message); } }); }); await extension.startup(); let contentPage = await ExtensionTestUtils.loadContentPage( "http://example.com/data/file_sample.html" ); let message = await awaitConsole; ok( message.message.includes( "WebExt Privilege Escalation: typeof(browser) = undefined" ), "Document does not have `browser` APIs." ); await contentPage.close(); await extension.unload(); });