I have a JavaScript component in my application that handles infinite scroll pagination, and i'm trying to rewrite it to use the IntersectionObserver, as described here, however I'm having issues i...

I've got a single method in my namespace that I'd like to mock, but I'd prefer that all the others work normally. Is it possible to have sinon mock a specific method while leaving the others the sa...

I need to read data from FormData? I try to read something like someFormatData["valueName"] but it not working. options["fileId"] or options["file"] does not work. Also I try options.fileId same re...

I've had no problems sorting out mocking the success condition, but cannot seem to fathom how to mock the failure/timeout conditions when using Sinon and Qunit to test and ajax function: My set up ...

Up untill now I was used to write all my code inside the ready() function like: $(document).ready(function() { // all my code }); Now I see that with this approach, my code is not "unit testabl...

On the server side we have Rspec/Cucumber for BDD development (ruby) vowsjs (node.js) Is there a BDD frameworks to use on web browsers (not qUnit or YUI test since these are only for TDD)?

Is it possible to override the equivalence comparison in Javascript? The closest I have gotten to a solution is by defining the valueOf function and invoking valueOf with a plus in front of the ob...

I'm new to qunit, and am attempting to integrate it with an existing environment. One of the issues I get on pages that utilize jQuery is this: global failure (1, 0, 1)Rerun6 ms Uncaught Referenc...

How do you trigger selecting an <option> in a select element in an integration test? select2 is simple enough: Simulate a ember-select2 selection in ember integration test

I'm trying to add unit testing for JavaScript into my web site. I use VS2013 and my project is an ASP.NET web site. Based on recommendations (http://www.rhyous.com/2013/02/20/creating-a-qunit-test...

I recently started working on a Rails app that has a large amount of QUnit tests already in place for testing ember. I have been charged with the task of setting the app with a CI (I decided to use...

working in ember-cli testing. After all tests passed it returns extra two test with errors. Uncaught Error: Assertion Failed: calling set on destroyed object Source : '../dist/assets/vendor.js:...

How do I "think in Qunit" with my own JavaScript libraries ? I'm familiar with developing in javascript, but now I'd like to start using Qunit (with my applications in HTML/JavaScript). I make my...

I'm using Qunit framework to test a front-end Web application. I have a requirement to generate report for code coverage. For that, I'm trying to use istanbul through a gulp task. My gulpfile.js l...

When I execute my tests locally they pass with no problems but when tests proceed on the server I get: TypeError: MouseEventConstructor is not a constructor (evaluating 'new MouseEvent('mousedown'...

Using sinon and sinon-qunit in our front end unit tests, and I'm struggling to understand the difference in these methods. We are using sinon.sandbox.stub() (literally that is the function, we do n...

When I enter 'karma start' in the WebStorms' terminal, it opens Chrome and I can start testing, when I make some changes, it reruns the tests. But what is the difference when I type Karma start or ...

I have to exec some code before all tests began. So I need to use QUnit hook before but in ember-qunit the only callbacks available are beforeEach and afterEach. How can I perform that?

I know that there is a lot of other similar questions, however the answers don't provide a way round this problem. I have a JavaScript file used on my website that uses the HTML 5 Web Audio and wa...

I have a simple component integration test: test('it throws error my-custom-input is called', function(assert) { assert.throws(() => { this.render(hbs`{{my-custom-input}}`); }, /my-custom-in...

How do we assert for equality of ES6 Maps and Sets? For example: // ES6 Map var m1 = new Map(); m1.set('one', 1); var m2 = new Map(); m2.set('two', 2); assert.deepEqual(m1,m2); // outputs: passed...

In the simplest test possible, I'm attempting to test the following function: addPercentSign: function (oEvent, control) { var inputVal = oEvent.getParameters().value; var inputNumber = parseFl...

I need a way to take a screenshot during a test which uses QUnit and Karma to run inside PhantomJS 2.0.1 I've found this command: window.top.callPhantom('render'); That doesn't throw any error ...

I have several class-based helpers in my app, mostly so I can include the i18n service. Everything works nicely, however, I can't figure out a way to test them. The auto generated test is not work...

I am doing QUnit testing in an IFRAME and have a recursive JavaScript function that loads all of the scripts from the parent page into the IFRAME before starting QUnit. This works great. My problem...