JavaScript Apprenticeships

I am attempting to create some basic tests to try out the new Cypress library. In my test I have cy… Read more Cypress With Systemjs

I would like to test that clicking on a link updates the components in my app. Here's my app, … Read more Enzyme Integration Testing Testing With React Router - Testing Components Update With Links

I need to spy on Date.toISOString() and return a value. const spy = jest.spyOn(global, Date); spies… Read more Jest: Spy On Object Method?

http://jsperf.com/testing-foreach-vs-for-loop It was my understanding that Test Case 2 should run m… Read more Array.foreach Running Faster Than Native Iteration? How?

Trying to call this custom matcher in jasmine testing tool but I got this error: TypeError: matcher… Read more Custom Matcher Makes Jasmine To Hang

I was trying to implement the example shown in Jest website: Getting started with Jest. While runn… Read more Typeerror: Environment.setup Is Not A Function In React Testing