mirror of
https://github.com/classilla/tenfourfox.git
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279 lines
9.1 KiB
JavaScript
279 lines
9.1 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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const events = require("sdk/system/events");
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const self = require("sdk/self");
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const { Cc, Ci, Cu } = require("chrome");
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const { setTimeout } = require("sdk/timers");
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const { Loader, LoaderWithHookedConsole2 } = require("sdk/test/loader");
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const nsIObserverService = Cc["@mozilla.org/observer-service;1"].
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getService(Ci.nsIObserverService);
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var isConsoleEvent = (topic) =>
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!!~["console-api-log-event", "console-storage-cache-event"].indexOf(topic)
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exports["test basic"] = function(assert) {
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let type = Date.now().toString(32);
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let timesCalled = 0;
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function handler({subject, data}) { timesCalled++; };
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events.on(type, handler);
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events.emit(type, { data: "yo yo" });
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assert.equal(timesCalled, 1, "event handler was called");
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events.off(type, handler);
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events.emit(type, { data: "no way" });
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assert.equal(timesCalled, 1, "removed handler is no longer called");
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events.once(type, handler);
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events.emit(type, { data: "and we meet again" });
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events.emit(type, { data: "it's always hard to say bye" });
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assert.equal(timesCalled, 2, "handlers added via once are triggered once");
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}
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exports["test simple argument passing"] = function (assert) {
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let type = Date.now().toString(32);
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let lastArg;
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function handler({data}) { lastArg = data; }
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events.on(type, handler);
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[true, false, 100, 0, 'a string', ''].forEach(arg => {
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events.emit(type, arg);
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assert.strictEqual(lastArg, arg + '',
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'event emitted for ' + arg + ' has correct data value');
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events.emit(type, { data: arg });
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assert.strictEqual(lastArg, arg + '',
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'event emitted for ' + arg + ' has correct data value when a property on an object');
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});
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[null, undefined, {}].forEach(arg => {
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events.emit(type, arg);
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assert.strictEqual(lastArg, null,
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'emitting ' + arg + ' gets null data');
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});
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events.off(type, handler);
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};
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exports["test error reporting"] = function(assert) {
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let { loader, messages } = LoaderWithHookedConsole2(module);
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let events = loader.require("sdk/system/events");
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function brokenHandler(subject, data) { throw new Error("foo"); };
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let lineNumber;
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try { brokenHandler() } catch (error) { lineNumber = error.lineNumber }
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let errorType = Date.now().toString(32);
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events.on(errorType, brokenHandler);
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events.emit(errorType, { data: "yo yo" });
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assert.equal(messages.length, 2, "Got an exception");
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assert.equal(messages[0], "console.error: " + self.name + ": \n",
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"error is logged");
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let text = messages[1];
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assert.ok(text.indexOf("Error: foo") >= 0, "error message is logged");
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assert.ok(text.indexOf(module.uri) >= 0, "module uri is logged");
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assert.ok(text.indexOf(lineNumber) >= 0, "error line is logged");
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events.off(errorType, brokenHandler);
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loader.unload();
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};
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exports["test listeners are GC-ed"] = function(assert, done) {
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let receivedFromWeak = [];
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let receivedFromStrong = [];
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let loader = Loader(module);
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let events = loader.require('sdk/system/events');
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let type = 'test-listeners-are-garbage-collected';
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function handler(event) { receivedFromStrong.push(event); }
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function weakHandler(event) { receivedFromWeak.push(event); }
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events.on(type, handler, true);
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events.on(type, weakHandler);
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events.emit(type, { data: 1 });
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assert.equal(receivedFromStrong.length, 1, "strong listener invoked");
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assert.equal(receivedFromWeak.length, 1, "weak listener invoked");
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handler = weakHandler = null;
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Cu.schedulePreciseGC(function() {
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events.emit(type, { data: 2 });
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assert.equal(receivedFromWeak.length, 1, "weak listener was GC-ed");
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assert.equal(receivedFromStrong.length, 2, "strong listener was invoked");
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loader.unload();
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done();
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});
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};
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exports["test alive listeners are removed on unload"] = function(assert) {
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let receivedFromWeak = [];
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let receivedFromStrong = [];
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let loader = Loader(module);
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let events = loader.require('sdk/system/events');
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let type = 'test-alive-listeners-are-removed';
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const handler = (event) => receivedFromStrong.push(event);
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const weakHandler = (event) => receivedFromWeak.push(event);
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events.on(type, handler, true);
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events.on(type, weakHandler);
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events.emit(type, { data: 1 });
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assert.equal(receivedFromStrong.length, 1, "strong listener invoked");
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assert.equal(receivedFromWeak.length, 1, "weak listener invoked");
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loader.unload();
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events.emit(type, { data: 2 });
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assert.equal(receivedFromWeak.length, 1, "weak listener was removed");
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assert.equal(receivedFromStrong.length, 1, "strong listener was removed");
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};
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exports["test handle nsIObserverService notifications"] = function(assert) {
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let ios = Cc['@mozilla.org/network/io-service;1']
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.getService(Ci.nsIIOService);
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let uri = ios.newURI("http://www.foo.com", null, null);
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let type = Date.now().toString(32);
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let timesCalled = 0;
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let lastSubject = null;
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let lastData = null;
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let lastType = null;
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function handler({ subject, data, type }) {
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// Ignores internal console events
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if (isConsoleEvent(type))
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return;
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timesCalled++;
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lastSubject = subject;
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lastData = data;
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lastType = type;
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};
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events.on(type, handler);
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nsIObserverService.notifyObservers(uri, type, "some data");
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assert.equal(timesCalled, 1, "notification invokes handler");
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assert.equal(lastType, type, "event.type is notification topic");
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assert.equal(lastSubject, uri, "event.subject is notification subject");
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assert.equal(lastData, "some data", "event.data is notification data");
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function customSubject() {}
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function customData() {}
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events.emit(type, { data: customData, subject: customSubject });
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assert.equal(timesCalled, 2, "notification invokes handler");
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assert.equal(lastType, type, "event.type is notification topic");
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assert.equal(lastSubject, customSubject,
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"event.subject is wrapped & unwrapped");
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assert.equal(lastData, customData, "event.data is wrapped & unwrapped");
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events.off(type, handler);
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nsIObserverService.notifyObservers(null, type, "some data");
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assert.equal(timesCalled, 2, "event handler is removed");
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events.on("*", handler);
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nsIObserverService.notifyObservers(null, type, "more data");
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assert.equal(timesCalled, 3, "notification invokes * handler");
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assert.equal(lastType, type, "event.type is notification topic");
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assert.equal(lastSubject, null,
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"event.subject is notification subject");
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assert.equal(lastData, "more data", "event.data is notification data");
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events.off("*", handler);
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nsIObserverService.notifyObservers(null, type, "last data");
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assert.equal(timesCalled, 3, "* event handler is removed");
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};
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exports["test emit to nsIObserverService observers"] = function(assert) {
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let ios = Cc['@mozilla.org/network/io-service;1']
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.getService(Ci.nsIIOService);
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let uri = ios.newURI("http://www.foo.com", null, null);
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let timesCalled = 0;
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let lastSubject = null;
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let lastData = null;
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let lastTopic = null;
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var topic = Date.now().toString(32)
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let nsIObserver = {
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QueryInterface: function() {
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return nsIObserver;
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},
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observe: function(subject, topic, data) {
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// Ignores internal console events
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if (isConsoleEvent(topic))
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return;
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timesCalled = timesCalled + 1;
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lastSubject = subject;
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lastData = data;
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lastTopic = topic;
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}
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};
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nsIObserverService.addObserver(nsIObserver, topic, false);
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events.emit(topic, { subject: uri, data: "some data" });
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assert.equal(timesCalled, 1, "emit notifies observers");
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assert.equal(lastTopic, topic, "event type is notification topic");
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assert.equal(lastSubject.wrappedJSObject.object, uri,
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"event.subject is notification subject");
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assert.equal(lastData, "some data", "event.data is notification data");
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function customSubject() {}
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function customData() {}
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events.emit(topic, { subject: customSubject, data: customData });
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assert.equal(timesCalled, 2, "emit notifies observers");
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assert.equal(lastTopic, topic, "event.type is notification");
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assert.equal(lastSubject.wrappedJSObject.object, customSubject,
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"event.subject is notification subject");
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assert.equal(lastData, customData, "event.data is notification data");
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nsIObserverService.removeObserver(nsIObserver, topic);
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events.emit(topic, { data: "more data" });
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assert.equal(timesCalled, 2, "removed observers no longer invoked");
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nsIObserverService.addObserver(nsIObserver, "*", false);
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events.emit(topic, { data: "data again" });
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assert.equal(timesCalled, 3, "emit notifies * observers");
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assert.equal(lastTopic, topic, "event.type is notification");
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assert.equal(lastSubject, null,
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"event.subject is notification subject");
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assert.equal(lastData, "data again", "event.data is notification data");
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nsIObserverService.removeObserver(nsIObserver, "*");
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events.emit(topic, { data: "last data" });
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assert.equal(timesCalled, 3, "removed observers no longer invoked");
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}
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require("sdk/test").run(exports);
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