"use strict"; const server = createHttpServer({ hosts: ["example.com"] }); server.registerDirectory("/data/", do_get_file("data")); add_task(async function test_runtime_id() { let extension = ExtensionTestUtils.loadExtension({ manifest: { content_scripts: [ { matches: ["http://example.com/data/file_sample.html"], js: ["content_script.js"], }, ], }, background() { browser.test.sendMessage("background-id", browser.runtime.id); }, files: { "content_script.js"() { browser.test.sendMessage("content-id", browser.runtime.id); }, }, }); await extension.startup(); let contentPage = await ExtensionTestUtils.loadContentPage( "http://example.com/data/file_sample.html" ); let backgroundId = await extension.awaitMessage("background-id"); equal( backgroundId, extension.id, "runtime.id from background script is correct" ); let contentId = await extension.awaitMessage("content-id"); equal(contentId, extension.id, "runtime.id from content script is correct"); await contentPage.close(); await extension.unload(); });