/* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ "use strict"; const { PageMod } = require("sdk/page-mod"); const tabs = require("sdk/tabs"); const { startServerAsync } = require("./httpd"); const { setTimeout } = require("sdk/timers"); const serverPort = 8099; exports.testContentScriptLatencyRegression = function*(assert) { let server = startServerAsync(serverPort); server.registerPathHandler("/", function handle(request, response) { response.write(` slow loading page... `); }); server.registerPathHandler("/slow.css", function handle(request, response) { response.processAsync(); response.setHeader('Content-Type', 'text/css', false); setTimeout(_ => { response.write("body { background: red; }"); response.finish(); }, 2000); }); let pageMod; let worker = yield new Promise((resolve) => { pageMod = PageMod({ include: "http://localhost:8099/", attachTo: "top", contentScriptWhen: "start", contentScript: "new " + function ContentScriptScope() { self.port.on("a-port-message", function () { self.port.emit("document-ready-state", document.readyState); }); }, onAttach: function(w) { resolve(w); } }); tabs.open({ url: "http://localhost:8099/", inBackground: true }); }); worker.port.emit("a-port-message"); let waitForPortMessage = new Promise((resolve) => { worker.port.once("document-ready-state", (msg) => { resolve(msg); }); }); let documentReadyState = yield waitForPortMessage; assert.notEqual( "complete", documentReadyState, "content script received the port message when the page was still loading" ); assert.notEqual( "uninitialized", documentReadyState, "content script should be frozen if document.readyState is still uninitialized" ); assert.ok( ["loading", "interactive"].includes(documentReadyState), "content script message received with document.readyState was interactive or loading" ); // Cleanup. pageMod.destroy(); yield new Promise((resolve) => worker.tab.close(resolve)); yield new Promise((resolve) => server.stop(resolve)); }; require("sdk/test/runner").runTestsFromModule(module);