I am trying to test the specifics of a rejected Promise, using Chai-as-Promised, Mocha, and the "should" dialect. Promises are implemented by bluebird.  This works fine:  it('it should be rejected when given bad credentials', function...

I'm testing out a simple application (from the Mocha tutorial code here https://marcofranssen.nl/using-mocha-chai-sinon-to-test-node-js/) to try to get Istanbul to work. My problem is that Istanbul works fine to give me a coverage summary, but th...

I'm new to TDD and working with Mocha and Chai. I have created a test that passes when a value is increased, but when that increase is put within a setInterval, it fails. The objective of this code is to have something move across the screen.  fu...

I have a simple javascript package I'm trying to test. I want to check for an Error being thrown, but when my test is run, and the error is thrown, the test is marked as failing.  Here's the code:  var should = require('chai').should(...

Thanks to @pipo_dev I was able to solve an issue I was having with multiple evaluations in NightmareJS, one thing that I would like to know is if I can provide multiple reports for the same test, take the following as an example:  describe('test...

Is there a way in Mocha to test if a function calls a specific method or external function?  I am using Mocha with Chai, but am open to any other assertion libraries.    Ok, so testing whether a methid is being called is pretty easy using sinon. I...

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I’m trying to setup some JS Unit tests using Mocha, and Ideally, I'd like to run this via the command line oppose to a web page.  (TL:DR; at the bottom)  First I did some bullshit test to confirm that Array worked as expected which I pulled dir...

I'm getting the exact error as found here: (window.beforeEach || window.setup) is not a function. However the fix did not work, the author of the tutorial series here even mentioned the same fix.  Here is the Tuts+ author's fix:   Which is si...

I am trying evaluate whether data returned from a table (table.getData()) which is a 2D array contains another array.  In the console the expected data appears in the 2D array returned from the table.getData() call but the assertion fails.  this.Then...