testing - How do I test Chrome Extension/Firefox WebExtension code? -


since firefox forcing me to, i'm rewriting extension use webextension apis, i.e. chrome's extension apis. want have automated testing. far i've tried this:

i've got package.json npm install depedencies:

{   "name": "extension-api-tests",   "version": "0.0.1",   "scripts": {     "test": "karma start"   },   "devdependencies": {     "karma": "^1.3.0",     "karma-firefox-launcher": "^1.0.0",     "karma-mocha": "^1.3.0",     "karma-sinon-chrome": "^0.2.0",     "mocha": "^3.1.2",     "sinon-chrome": "^2.1.2"   } }

i've got karma.conf.js set test runner:

module.exports = function(config) {   config.set({     frameworks: ['mocha', 'sinon-chrome'],     files: ['test.js'],     reporters: ['dots'],     autowatch: false,     browsers: ['firefox'],     singlerun: true,     concurrency: infinity,   }); };

and i've got basic tests:

describe('my frustration', () => {   it('works when uses no apis', done => {     done();   });    it('should respond messages!', done => {     console.log('message test starting');     chrome.runtime.onmessage.addlistener((message, sender, sendresponse) => {       console.log('received message');       sendresponse(true);     });     chrome.runtime.sendmessage({}, result => {       console.log('received response message');       done();     });   });    it('should open tab!', done => {     console.log('tab test starting');     chrome.tabs.create({       'active': true,       'url': 'http://www.example.com/',     }, tab => {       console.log('created tab:', tab);       done();     });   }); });

this of course reduced test case. when run npm test, (abbreviated slightly):

> extension-api-tests@0.0.1 test .../ext-test > karma start  25 07 2017 11:57:10.395:info [karma]: karma v1.7.0 server started @ http://0.0.0.0:9876/ 25 07 2017 11:57:10.397:info [launcher]: launching browser firefox unlimited concurrency 25 07 2017 11:57:10.404:info [launcher]: starting browser firefox 25 07 2017 11:57:14.687:info [firefox 54.0.0 (ubuntu 0.0.0)]: connected on socket iijnrrqfzwj68_gnaaaa id 42440302 . log: 'message test starting' firefox 54.0.0 (ubuntu 0.0.0) frustration should respond messages! failed         timeout of 2000ms exceeded. async tests , hooks, ensure "done()" called; if returning promise, ensure resolves. log: 'tab test starting' firefox 54.0.0 (ubuntu 0.0.0) frustration should open tab! failed         timeout of 2000ms exceeded. async tests , hooks, ensure "done()" called; if returning promise, ensure resolves. firefox 54.0.0 (ubuntu 0.0.0): executed 3 of 3 (2 failed) (3.998 secs / 4.001 secs) npm err! test failed.  see above more details.

my tests try use extension apis fail. not (e.g.) chrome.runtime not defined (but if remove 'sinon-chrome' karma.conf.js), believe have sinon set up. apis never anything, never work. code want test all passing data around through these apis (especially messages, cross chrome/content boundary).


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