cy.blog()

Sharing our challenges, mistakes, hacks, successes, opinions and news

Code Coverage Isn’t Enough: How UI Coverage Completes the Picture

Measuring Coverage Is Hard; We Made It Better Trying to understand how much of your application is tested can be an exercise in frustration—you're stuck relying on numbers that are hard to interpret, methods that don’t reflect real user activity, and reports that are a nightmare to collaborate on. But what if it didn't have to be this way? What if coverage could be actionable, intuitive, and reflective of what really matters—the user experience? That's why we built UI Coverage. Let's break dow Read more

Element Coverage

Our users are periodically asking us to instrument application code and save code coverage information after Cypress runs end-to-end tests. In this blog I will argue that code coverage is less than useful for end-to-end tests. Then I will show element coverage that might be a better metric. > Experimental feature This document shows a very early proof of concept. The API and features shown here are likely to change. Use at your own risk. How do you know that you have written enough tests? Ho

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Devoxx Belgium 2018 & Xebia Meetup

November was another great month here at Cypress as the team spread out across multiple conferences to talk about end-to-end testing. I had the pleasure of giving a conference talk and a workshop at Devoxx Belgium [https://devoxx.be/]. In between the hustle and bustle of Devoxx, I made a visit to the Xebia [https://xebia.com/] headquarters for a Cypress meetup. Devoxx Belgium Conference I arrived in Antwerp, Belgium the night before the start of the conference on November 12th. This was my firs

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Meet our Lead Product Designer: Jeff Tucker

Hi, I’m Jeff 👋 I’m a designer and developer, and I’ve just joined Cypress as Lead Product Designer. I’ve held a fairly wide assortment of roles before this – UX designer, frontend developer, backend developer, and data analyst. Let’s take a look at how I’m using these skills to help build Cypress. Parallelism calculator Cypress rolled out test parallelization support [https://www.cypress.io/blog/2018/09/05/run-end-to-end-tests-on-ci-faster/] just a few months ago. We’ve talked a good bit about

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Testing Redux Store

Cypress tests usually operate via public browser APIs like DOM, network, or storage. But the tests can just as easily reach into the application and check if the internal state is updated correctly. In this blog post I will show you how to run assertions against a React application that uses a Redux [https://redux.js.org/] store. This blog post assumes you’ve already installed Cypress [https://on.cypress.io/installing-cypress], and you can find the source code in cypress-example-recipes#testin

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ReactiveConf 2018

October 2018 was a great month for Cypress - we went out of Beta with our SaaS services, did a ton of work on the test runner and released v3.1.1 [https://github.com/cypress-io/cypress/releases/tag/v3.1.1], and I did ReactiveConf Roadshow and Conference tour. This blog post summarizes what I have done during the conference. If you could not attend the ReactiveConf 2018, you can still catch up with Cypress by reading. Meetups We have driven around Czech Republic with Matej Stratený and conducted

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Cypress Case Study: Quizlet

With more than 30 million active users every month, Quizlet is now the world’s largest student and teacher online learning community. It’s used by one in two high school students and one in three college students, so keeping their application up and running smoothly is a top priority. In this case study, we’ll dig into why and how Quizlet now trusts Cypress as their primary end-to-end testing framework. The Problem Quizlet was using Capybara, which is a Ruby layer on Selenium for E2E testing,

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Cypress Halloween Theme

A good tool can become a great tool when users make it their own through customization. In this blog post I will explain how to customize the Cypress test runner’s appearance through user space color themes. Since it is the season, we have prepared a dark and spooky Halloween color theme that might scare all your bugs away! When Cypress executes your end-to-end tests, the application under test is placed in an iframe element. The tests themselves are placed into another iframe to isolate them f

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Dashboard Service Downtime Post-mortem on September 24th, 2018

On Monday, September 24th, the Cypress Dashboard service experienced an approximate downtime of 4 hours from 18:20 UTC to 22:40 UTC. This post is to document and communicate to our users the events that occurred, our investigation, solutions, and the actions we’re taking immediately to mitigate and improve our response to service downtime scenarios. #EventsEvents * At 18:20 UTC we started seeing elevated levels of a variety of errors. One repeated error indicated that our application hostin

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We're officially out of beta!

It’s been over four years since our first commit. Since then, we’ve seen Cypress achieve widespread and rapidly growing adoption. It’s now been downloaded more than 2.5 million times [https://npmcharts.com/compare/cypress?&periodLength=30], with thousands of organizations recording millions of tests per month. And today, we’re thrilled to announce that Cypress has officially left beta. 🎉 To keep up, we’ve expanded our engineering team [https://www.cypress.io/about/], while working hard to grow

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