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

Introducing UI Coverage

Releases Learn how UI Coverage by Cypress enhances your testing strategy by providing visual insights into test coverage, identifying gaps, and optimizing your test suite. Read more

All Releases Community Education

Company <draft>

Debugging with Cypress vs. Playwright

When it comes to end-to-end testing, developers often face the challenging task of debugging failing tests. Two of the most popular tools in this space are Cypress and Playwright. Both offer powerful features, including time travel debugging capabilities. However, Cypress excels in creating a more i

Cypress in Action: Fitting Testing into Your Software Development Practices

Testing in the software development cycle is a critical phase that ensures the final product is reliable, functional, and meets user expectations. By identifying and fixing bugs early, testing prevents them from snowballing into larger, more complex issues, ultimately saving time and resources. Thor

Introducing UI Coverage

Looking for Early Access? Sign up here. Cypress broke new ground in testing by introducing an app that visually displays your tests running on your application in real-time. Since then, we’ve become one of the largest testing frameworks globally, enabling thousands of organizations to confidently de

Understanding Selectors in Frontend Development and Cypress Testing

Selectors are a fundamental part of frontend development and testing. They enable developers and testers to interact with and manipulate elements within the Document Object Model (DOM). In the context of automated testing, particularly with tools like Cypress, selectors play a crucial role in ensuri

Webinar Recap: Unlocking Testing Stability – Strategies and Tools for Handling Flakiness

In a recent webinar, David Ingraham, a seasoned Senior SDET at Matium and Cypress ambassador, talked about the perplexing issue of test flakiness in software development and testing and provided an in-depth strategy for tackling test flakiness. Below we’ll drive into the comprehensive approach share

Crafting a Robust Testing Strategy: A Comprehensive Guide to Scale Your Testing Efforts

In today's fast-paced software development landscape, ensuring the quality and reliability of applications is critical for success. A robust testing strategy serves as the cornerstone of software quality assurance, providing developers with confidence in their code and ensuring a seamless user exper

Webinar Recap: Using Cypress and GitHub Actions to Build an Automation Pipeline

This week we were joined by Carter Capocaccia, Senior Engineering Manager of Quality Automation at Hilton, for an illuminating webinar where the he demystified the intricacies of setting up CICD workflows and integrating quality automation, using GitHub Actions, Cypress, and Vercel. Here are the top

How to Execute Test Cases In Parallel with Cypress Cloud Using GitHub CI/CD Actions

In a world where time equates to money, minimizing execution time for various actions is imperative. This holds true for testing, where parallelizing test cases becomes a key strategy to reduce testing durations and accelerate test suite execution. Cypress Cloud, in conjunction with GitHub Actions,

Introducing Cypress Accessibility

Looking for early access? Sign up here. Introduction We built Cypress Accessibility to help teams measure and improve the accessibility of their applications by adding highly effective, zero-effort accessibility checks to the Cypress Cloud platform. To do this, we automatically generate rich, intera

Cypress Studio: A Beginner's Guide

Embarking on a project migration to a new tool may seem like a daunting journey, especially when adapting to Cypress requires mastering JavaScript and understanding the mocha framework. However, the silver lining lies in Cypress Studio, an integrated tool within Cypress. This visual gem simplifies t

Webinar Recap: Introducing The New Era of Debugging

Recently, we were joined by Cypress Ambassadors and Brian Mann, the visionary founder behind Cypress, to discuss an exciting new feature released in Cypress 13: Test Replay! In this article, we’ve summarized the key takeaways from the webinar. If you’re curious for more, the full recording is availa

Move Your Protractor Tests to Cypress Faster with the Cypress Migrator

We’ve created an educational tool to help you visualize and learn the differences between Protractor and Cypress APIs to move your tests over more rapidly: the Cypress Migrator! The tool is a hands-on playground where you can easily paste in code snippets from Protractor to see what they look like i

Webinar Recap: Unlocking the Power of Test Replay

Recently, Brian Mann, the visionary founder behind Cypress, unveiled an exciting new feature that promises to revolutionize debugging in Cypress: Test Replay! In this article, we've distilled the key takeaways from the webinar, and if you're curious for more, the full recording is available on YouTu

Cypress and Chatbot AI: Writing Tests

This is a guest post from Ambassador David Ingraham. Hello, I’m David. I’m a Senior SDET with a passion for quality and training engineers on best practices in the industry. I’ve implemented robust testing frameworks for three years with Cypress.io and I’m looking forward to many more. Find and conn

Webinar Recap: Speed up your E2E Testing with ephemeral environments from Shipyard

Recently the team at Shipyard joined us for a webinar on speeding up end-to-end testing with ephemeral environments. We’ve captured the highlights, and you can watch the recording here on YouTube. 🎉 This is a guest post from Benjie De Groot, Co-founder at Shipyard. Hello, I'm Benjie. I'm a co-found

Component Testing for Engineering Leadership

This post is the third of a series that explores how Component Testing can benefit different parts of your team or organization. If you’re wondering why you and your team should adopt Component Testing, this series is for you! We covered how developers and QA teams can improve the quality of their f

Make Sure You Do This Before Switching To Signals in App Development Testing

This blog post was originally published on dev.to. This time last year Standalone Component's were the talk of the Angular town. This year signals have replaced that buzz throughout the Angular Ecosystem. Though it will take some time for the introduction of signals into Angular's ecosystem to take

Quickly Export Cypress Tests Directly from Google Chrome

This is a guest post from Jecelyn Yeen. I'm Jecelyn Yeen, a developer advocate at Google, working on Chrome DevTools. I speak English, Mandarin, Cantonese, Malay, C#, Java, Typescript & of course JavaScript 😎. Find me on: Twitter, LinkedIn, Facebook, Github. You may watch this video of me on Youtub

Using Dependency Injection in React with Cypress Component Testing

Testing React components is relatively straightforward. However, you might run into an instance where some of the modules imported in your component are getting in the way of testing its functionality, and you'd like a way to work around them. A technique that can be used to help with this problem i

Test-Driven UI Development with Cypress Component Testing

As developers, testing can sometimes feel like extra work that we need to take on after building our UI components. We build a component, manually test it in the app, and then write tests to describe how our component should behave. At least, that’s how I used to think about testing my UI components

Test Isolation as a Best Practice

New for 12.7: Component Framework Definition API

Cypress Component Testing Integration Framework Definition API

Cypress prides itself on providing a first-class experience for Component Testing. Part of this experience is our onboarding process that automatically detects the library and framework used in a project, and scaffolds the relevant files and configuration. Starting with Cypress 12.7, we are exposing

Effective component testing for next.js with Cypress

Component Testing Next.js with Cypress

Cypress Component Testing allows you to build and test individual components using popular front-end frameworks, and one of the most popular frameworks in use today is Next.js. Front-end libraries like React and Vue are designed to structure your application into small, reusable components, but a fr

Learn the value of Component Testing for QA teams

What Cypress Component Testing Means for QA and "Shifting Left"

This post is the second of a series that explores how Component Testing can benefit different parts of your team or organization. If you’re wondering why you and your team should adopt Component Testing, this series is for you! In our first post of this series, we discussed how Cypress Component Tes

Learn the value of component testing for developers

What Cypress Component Testing Means for Developers

Recently, we launched Component Testing to GA! In this blog series, we’re going to break down how Component Testing brings layered benefits to different parts of your team or organization. If you’re wondering why you and your team should adopt Component Testing, this series is for you! In this first

Announcing Cypress Component Testing GA and Performance Improvements in Cypress 11

Today your tests get an upgrade as we launched Cypress 11! We have a few exciting additions to share. Let's dig in! Cypress Component Testing Goes GA Cypress Component Testing (CT) allows you to build and test individual components using popular front-end frameworks in isolation. Tests run in the br

Upcoming Changes to Component Testing

Cypress 7 introduced the alpha version of a new testing type – the first since Cypress’ inception – Component Testing. Cypress 10 brought a number of updates and improvements, marking the beta version of Component Testing. Early next week, we will be releasing Cypress 11. With this release, we are e

How Cypress Component Testing changed our workflow (and how I came to work here)

Before I joined Cypress last year, the alpha version of Cypress Component Testing changed the way my team did front-end work at my previous job, allowing us to consolidate three tools into one. This was the experience that ultimately led to me joining the Component Testing team at Cypress, where I g

Cypress 10.5.0: Introducing Angular Component Testing

Earlier this year, we announced our biggest release of Cypress ever. This introduced a new unified UI, faster test runs, and support for a new type of testing, Component Tests. This initial release included Component Testing support for both React and Vue with the plan to add additional framework su

Announcing Cypress 10 with Component Testing Beta!

Hello, friends! Today, we have an exciting announcement to share. The title up above might have given it away, but in case you missed it, Cypress 10 is here 🎉! Cypress 10 is our most exciting release yet, and we have a lot to unpack, so let's dive in and look at some of the new functionality. New C

Share Cypress Commands in an Nx Workspace

Our guest contributor is Juri Strumpflohner, Director of Developer Experience at Nrwl, where he helps developers with questions around frontend development, monorepos, scaling and modern tools. He is a core member of Nx, a smart, fast and extensible build system, optimized for monorepo development.

Guest Post: Automating sensor processing tests with synthetic data

Note: This post was written by Zach Rattner, CTO & Co-Founder of Yembo, the leader in AI-powered virtual inspections. The problem Yembo is the global leader in AI-powered, virtual home surveys. Our product contains a web app where clients scan quick videos of the items in their home, and our compute

Uploading html5 files made easy with the .selectFile command

Cypress has a built-in way for you to select files in an HTML5 input element and simulate dragging files into the browser with the introduction of the .selectFile() command. HTML5 input file upload With the .selectFile() command, you can easily select a fixture file in a form element: cy.get('input[

Webcast Recording | Faire + Cypress: Building an E2E Strategy that Scales

Last week, Director of DX at Cypress, Amir Rustamzadeh, and Software Engineer at Faire, David Mamujee, presented a live webcast on how Faire scaled their E2E testing strategy with Cypress. Some of the key topics they covered include: How Faire organizes their multi-repo setup for testing both their

Live Webcast | Faire + Cypress: Building an E2E Strategy that Scales

Faire’s fast-growing online marketplace enables over 30,000 independent brands to connect with over 250,000 retailers across the world. Join us Wednesday, September 29th at 2:00pm EDT/11:00am PDT to find out how the team built their E2E testing setup from scratch using Cypress, and how they accompli

Visual Testing for Emails Sent Using 3rd Party Dynamic Templates

This blog post will teach you how to visually verify the emails sent by a 3rd party service. Such verification is necessary to ensure the emails have the expected style, and include the necessary information. The post teaches you how to deal with the difficult email markup generated from dynamic tem

Webcast Recording | Flaky Test Management with Cypress

Last week, Cecelia Martinez, Technical Account Manager at Cypress, and Mike Cataldo, DX Engineer at Cypress, presented a live webcast on how to find and manage flaky tests in your test suite. Some of the key topics they covered include: The common causes of test flakiness, including DOM-related, net

Full Testing of HTML Emails using SendGrid and Ethereal Accounts

Imagine you are sending beautiful HTML emails using your own SMTP server or even a 3rd party service like SendGrid. What if the emails are formatted incorrectly? What if the template string is incorrect and the user sees Dear <<undefined>>? Can you test the emails to make sure they really work? In t

Cypress + Storybook 2.0

When building a design system, we like to see components rendered in isolation. What better tool to do that than Storybook? We can see our components, wrap them in decorators, and show our stakeholders beautiful user story demos. Once we know how our components should look, we want to test them. For

Testing HTML Emails using Cypress

In this blog post, we will use a local SMTP server to receive emails sent by the app to the user. We will test the HTML emails to make sure they look and work correctly. Note: you can find the source code shown in this blog post at cypress-email-example and watch a video explaining the testing proce

Live Webcast | Flaky Test Management with Cypress

Register Tired of battling flaky tests? Join us Wednesday, May 19th at 2:00pm EDT/11:00am PDT to find out how to focus your efforts with test-writing best practices, how to understand different types of flake, and the many ways in which Cypress can help you eliminate flake for good. Your Webcast Ho

Testing deployed GitLab pages using Cypress and GitLab CI

In this blog post we will deploy a static site to GitLab Pages, and then we will run end-to-end browser tests against the deployed site to make sure it is working as expected. The Cypress Test Runner makes it extremely simple to write full browser end-to-end (E2E) tests, while GitLab CI is a powerfu

Cypress and NeuraLegion: Leveraging your existing scripts for security testing automation

In this post, NeuraLegion’s VP Oliver Moradov explains how you can use Cypress, NeuraLegion’s HAR Generator, and NexPloit together to automate AppSec testing in your pipelines. NeuraLegion delivers a developer and QA focused AI-powered Dynamic Application Security Testing (DAST) SaaS platform. With

Webcast Recording | How Cypress helped Ansible re-write their entire UI from scratch

Last week, Distinguished Engineer at Cypress, Gleb Bahmutov, and Senior Automation Engineer at Ansible, John Hill, presented a live webcast on how how Ansible revamped their testing efforts by deleting all of their old tests and starting from scratch with Cypress. Some of the key topics they covered

Webcast Recording | How Pendo maintains a culture of quality with Cypress

Last week, Distinguished Engineer at Cypress, Gleb Bahmutov, and Senior Quality Engineer at Pendo, George Palfreyman, presented a live webcast on why Pendo's quality engineers chose Cypress to rebuild their test suite and continue their commitment to quality. Some of the key topics they covered incl

Live Webcast | How Cypress helped Ansible re-write their entire UI from scratch

Register Red Hat® Ansible® Automation Platform enables thousands of users to centralize and control IT infrastructure with a visual dashboard, role-based access control, job scheduling, integrated notifications, and graphical inventory management. Join us Thursday, April 15th at 2:00pm EDT/11:00am

Getting Started with Cypress Component Testing (Vue 2/3)

Getting Start with Cypress Component Testing (Vue 2/3) As of Cypress 7.0, our new Cypress Component Test Runner is bundled with the Cypress Test Runner! It builds on the learnings from the original component testing implementation, which was hidden behind the experimentalComponentTesting flag. In th

Getting Started with Cypress Component Testing (React)

As of Cypress 7.0, the new Component Test Runner is now bundled with Cypress! It builds on our learnings from the original component testing implementation, which was hidden behind the experimentalComponentTesting flag. In this blog post we will see how to set up the Cypress Component Test Runner in

Make Cypress Videos Look Old School

Recently, we introduced a trial feature called experimentalRunEvents that simplifies running Node code before or after executing a spec file. Inside your plugin file you can add event hooks to perform operations that need OS access. For example, you could: initialize the database before all tests st

Live Webcast | How Pendo maintains a culture of quality with Cypress

Register Pendo's product cloud provides user insight, user guidance, and user communication for thousands of digital product teams—all while maintaining a first-class industry reputation. Join us Wednesday, April 7th at 5:00pm GMT/1:00pm EDT/10:00am PDT to find out why Pendo's quality engineers chos

Webcast Recording | Build, test, and deploy your site with confidence using Netlify and Cypress

Last week, Distinguished Engineer at Cypress, Gleb Bahmutov, and Principal Developer Experience Engineer at Netlify, Jason Lengstorf, presented a live webcast on how to use the Cypress Netlify build plugin to make sure your Jamstack site deploys are bug-free, every time. Some of the key topics they

Live Webcast | Build, deploy, and test your site with confidence using Netlify and Cypress

Register Developers use Netlify's powerful serverless platform for Jamstack to increase productivity and simplify site building. Join us Thursday, March 18th at 2:30pm EST/11:30am PST to find out how you can easily add Cypress tests to your Netlify workflow to build, deploy, and test efficiently wit

Generate High-Resolution Videos and Screenshots

This blog post shows how to increase the resolution of the videos and screenshots recorded during the cypress run execution. Videos with higher resolution make debugging simpler and look better when shared with other members of the team. The problem Let's look at the Wikipedia.com website. In my loc

Testing periodic network requests with cy.intercept and cy.clock combination

This blog post tests an application that fetches new data every 30 seconds, but the test itself runs in milliseconds because it controls the application's clock and stubs the network responses. Note: you can find the source code in the cy.intercept recipe in the repository cypress-example-recipes. A

When Can The Test Blink?

Let's take a page where a loading element is displayed while the application is fetching the data from the server. If the test is observing the loading element to make sure it disappears, can the loading be too fast? Can the test runner "blink" and miss the element? Yes, it can. In this blog post I

Webcast Recording | Ship safer code with Cypress and Codecov

Last week, Distinguished Engineer at Cypress, Gleb Bahmutov, and Developer Relations Lead at Codecov, Tom Hu, presented a live webcast on how to ship safer code with Cypress and Codecov. Some of the key topics they covered include: How Codecov fits into your workflow How you can use coverage metrics

Running Cypress on the Apple M1 ARM Architecture using Rosetta 2

⚠️ This post is about running Cypress 10.1.x and below on Apple M1 ARM Architecture. Cypress 10.2.0 onwards includes native Apple Silicon support and does not require Rosetta to function. We recommend upgrading Cypress instead of following this guide for an older version. Native M1 builds run up to

Live Webcast | Ship safer code with Cypress and Codecov

Register Companies across the globe rely on code coverage insights to ensure quality standards. Join us on Wednesday, January 13th at 2pm EST/11am PST to find out how you can use Cypress tests with Codecov to write highly durable code that allows you to deploy with confidence. Your Webcast Hosts In

Testing the HREF Anchor Links

Once upon a time Zach Bloomquist and I were discussing how to achieve an all-time hero status. We were talking about our open source heroes of course, and I wanted to send Zach a link to the testing section of the Develop, Preview, Test blog post written by Guillermo Rauch. The testing section was i

Webcast Recording | How Carvana Transformed their Testing with Cypress Test Analytics

Last week, our VP of Engineering, Gleb Bahmutov, Sr. QE at Carvana, Tyler Monteith, Engineer II, Quality at Carvana, Arick Hanna, presented a live webcast how the Carvana team used Cypress to accelerate and strategize their testing efforts. Some of the key topics they covered include: How Carvana sc

Retry, Rerun, Repeat

If at first you don't succeed, then dust yourself off and try again. - American R&B singer Aaliyah (1979-2001) The modern Internet is built on retries. Software and hardware failures are normal and expected. Eve

Webcast Recording | Using Code Smells to Fix Flaky Tests in Cypress

Last week, our VP of Engineering, Gleb Bahmutov, and Web Platform Lead at Big Nerd Ranch, Josh Justice, presented a live webcast on the concept of code smells as a way to categorize problems in code, and how this concept can make it easier to fix flaky Cypress tests. Some of the key topics they cove

Introducing cy.intercept - Next Generation Network Stubbing in Cypress 6.0

Today, we're elevating the power and scope of Cypress' network handling capabilities with the introduction of the cy.intercept command in Cypress 6.0. One of the most powerful and beloved features of Cypress are easy network stubbing and spying APIs via cy.route and cy.server commands. These command

Live Webcast | How Carvana Transformed their Testing with Cypress Test Analytics

Register Carvana's leading e-commerce platform for buying and selling used vehicles offers a browsing selection of more than 20,000 vehicles with delivery in 262 markets across the U.S. Join us on Wednesday, December 2nd at 2pm EST/11am PST to find out how the team used Cypress to accelerate and str

When Can the Test Submit a Form?

In this blog post we continue exploring flaky tests and how to fix them. We will look at the situation when a page submits a form and then continues to interact with the page, which causes a problem. Tip: you can find all existing similar posts under the tag Flake. You can find the source code for t

Testing an Application in Offline Network Mode

Modern web applications need to continue working when a network is unavailable, or at least show users the current network status. In this blog post, I will show how Cypress can simulate an offline network status during a test. Note: the source code for this blog post can be found in the "Offline" r

Live Webcast | Using Code Smells to Fix Flaky Tests in Cypress

Register The concept of code smells is a way to categorize problems in code for the purpose of fixing them—in turn, this concept can also make it easier to fix flaky tests. Join us on November 18th at 2PM EST/11AM PST to learn how to identify and fix Cypress code smells, and get rid of test flaky te

Webcast Recording | How Userlane dramatically reduced flaky E2E tests with Cypress

Last week, our VP of Engineering, Gleb Bahmutov, Tobias Muelller, Sr Software Engineer at Userlane, and Haydeé Muñoz De la Rocha, Sr Frontend Engineer at Userlane, presented a live webcast on how Userlane used Cypress to transform their automated E2E testing to increase stability, improve performanc

Introducing Flaky Test Detection & Alerts

Practically everyone that has dealt with testing web applications has been confronted with flaky tests. These are the tests that can fail, but pass once retried and without any code changes. It's one of the most challenging obstacles with testing, and tremendous engineering effort can be invested (a

Live Webcast | How Userlane dramatically reduced flaky E2E tests with Cypress

Register Userlane's interactive, step-by-step guides help users instantly use any software without formal training. Find out how the team uses Cypress to increase stability, improve performance, and ensure quality for their CI/CD process while maintaining developer happiness. Tune in on October 28th

Debug a Flaky Visual Regression Test

In our Cypress RealWorld App we are using visual regression testing to catch unintended style and layout changes. We are using the Percy.io service, and you can see the screenshots at https://percy.io/cypress-io/cypress-realworld-app. During tests, we periodically take image snapshots using cy.percy

Guest Post: Retrying your tests is actually a good thing (If your approach is right)

Note: This post was written by Filip Hric. Filip is a QA lead at Slido, a lifelong IT enthusiast with a background in psychology, and a Cypress ambassador. Cypress recently released version 5.0.0 of their open source test runner. The release introduced native support for test retries (off by default

Webcast Recording | How GoFundMe’s QA Engineers and Developers Test 30x Faster with Cypress

Last week, our VP of Engineering, Gleb Bahmutov, and Sr. QA Engineer at GoFundMe Charity, Todd Williams, presented a live webcast on how GoFundMe’s QA team and developers achieved 30x faster test runs with Cypress. Some of the key topics they covered include: How GoFundMe’s QA team sets up the testi

When Can The Test Navigate?

No one likes flaky tests, not even their mama. In this blog post I will show a test that appears simple, yet acts in surprisingly annoying and frustrating ways. We will slightly change the test to make it reliable and flake-free. We will apply the following three principles to the test refactoring t

Live Webcast | How GoFundMe’s QA Engineers and Developers Test 30x Faster with Cypress

Register GoFundMe Charity's subscription-free fundraising platform uses powerful tools, including donation buttons, data solutions, and custom campaigns to provide a world-class fundraising experience for charities. In our upcoming webcast, find out how their QA and developers use Cypress to ensure

Sorting the Table

This recipe shows how to verify that an Ag-Grid table is sorted correctly. The source code can be found in the cypress-example-recipes repository under the "Testing the DOM" list. The application itself is a single HTML file Ag-Grid Basic Example Ag-Grid Table The main.js file creates a "smart" ta

Do Not Get Too Detached

When the Cypress Test Runner runs through the test's steps, the application can update itself, causing problems. Often a very frustrating problem our users encounter simply says cy... failed because the element has been detached from the DOM. You can see this error below and its explanation using th

Webcast Recording | Build invincible integration tests using Cypress and cypress-testing-library

Last week, our VP of Engineering, Gleb Bahmutov, and Frontend Developer at Fiverr, Roman Sandler, presented a live webcast on how to write durable, future-proof Cypress tests using cypress-testing-library. Some of the key topics they covered include: Understanding how brittle tests can affect the ma

End-to-end Testing Mobile Apps with Ionic and Cypress

What is Ionic? Ionic Framework is a free, open-source framework for developing native mobile applications using web development frameworks like Angular, React, and (coming soon!) Vue. Mobile applications developed in Ionic Framework run in a browser during development. Because of this, we can use Cy

Experimental Fetch Polyfill

Let's take an application that makes an Ajax call to the browser to load a list of ... fruits. You can find this awesome and healthy application in Cypress Example Recipes under name "Stubbing window.fetch". Application Every time you visit an application you get five new fruits This application pre

Live Webcast | Build invincible integration tests using Cypress and cypress-testing-library

Register A member of the testing-library.com family, cypress-testing-library is a collection of simple and complete custom Cypress commands and utilities that encourage good testing practices. Join us on Wednesday, July 8th at 1pm EDT/10am PDT to learn how to write durable, future-proof Cypress test

When Can The Test Log Out?

Recently, we released the Cypress Real World App - a modern web application with a full set of E2E and API tests showing the recommended best practices for writing tests. From the start, we had Linux continuous integration running tests on every commit. After the release, we added a Windows continuo

Guest Post: Core Cypress Lessons We Learned That 10x-ed Our E2E Automation

Note: This post was originally published on May 20, 2020, by Chris Miaskowski on 11sigma.com. Chris is the CEO at 11Sigma, a software engineer, a team leader, and an entrepreneur - a man of many hats. Currently, leading a QA team at Stoplight. For some time now, I've been leading the QA efforts at S

Webcast Recording | How Optimizely Tests Features and Feature Flags 300% Faster with Cypress

Last week, our VP of Engineering, Gleb Bahmutov, Software QA Engineer at Optimizely, Todd Seller, and Engineer Manager in Quality at Optimizely, Jeff Sing, presented a live webcast on how Optimizely tests features and feature flags 300% faster with Cypress. Some of the key topics they covered includ

Extending the Cypress Config File

Many tools allow one config file to extend another one. For example, ESLint allows one to apply recommended settings and then add several more rules: { "plugins": [ "react" ], "extends": [ "eslint:recommended", "plugin:react/recommended" ], "rules": { "react/no-set-state": "off" } } Similarly, the

Live Webcast | How Optimizely Tests Features and Feature Flags 300% Faster with Cypress

Register Optimizely’s Progressive Delivery & Experimentation platform helps companies deliver better software, products, and growth. In our upcoming webcast, find out how the team uses Cypress to ensure quality across multiple platforms and third party integrations. Join us on Wednesday, June 10th a

Webcast Recording | Keep your UI Sharp: Ensuring Functional and Visual Quality with Cypress.io + Happo.io

Last week, our VP of Engineering, Gleb Bahmutov, and Happo.io Founder, Henric Trotzig, presented a live webcast on how to add visual regression testing with Happo to your Cypress.io test suite, to ensure functional and visual quality with your UI. Some of the key topics they covered include: The bas

Where Does the Test Spend Its Time?

No one likes slow tests. But before we can make a test faster, we need to understand where the test actually spends its time. In this blog post I will show how to report the total test duration and time per individual Cypress command. Note: you can find the test source code shown in this blog post i

Webcast Recording | Shipping with Confidence: How DHL reduced test execution time by 50%

Last week, our VP of Engineering, Gleb Bahmutov, and DHL Software Engineer, Rick Fleuren, presented a live webcast on how the DHL team uses Cypress in combination with Docker and Jenkins to cut their test execution time in half. Some of the key topics they covered include: How the team accomplishes

Live Webcast | Keep your UI Sharp: Ensuring Functional and Visual Quality with Cypress.io + Happo.io

Register Happo (Happo.io) is a cross-platform, cross-browser screenshot testing tool for modern user interfaces. By integrating Happo screenshots with your Cypress test suite, you can easily ensure both functional and visual quality in your applications. Join us on Wednesday, May 20th at 1pm EDT/10a

Webcast Recording | Set up faster, easier, end-to-end testing with CircleCI and Cypress

In early April, our VP of Engineering, Gleb Bahmutov, and CircleCI Solutions Engineer, Vinny Thanh, presented a live webcast on how teams can use the Cypress Orb with CircleCI to run end-to-end tests against different environments, providing full confidence in their web applications. Some of the key

Live Webcast | Shipping with Confidence: How DHL reduced test execution time by 50%

Register DHL Parcel, widely known as one of the world's leading logistics companies, serves a global market of 220 countries and delivers over 1.5 billion parcels per year. With the company experiencing rapid growth, the business-to-business and business-to-consumer (B2X) team relies on Cypress test

Guest Post: Testing Lists of Items

Note: This post was originally published by Filip Hric on Medium. Filip is a QA lead at Slido, a lifelong IT enthusiast with a background in psychology, and a Cypress ambassador. TL;DR you can test your lists using .then() or .each() Cypress retries can help you test changes in your app you can pass

Webcast Recording | How Lightstep Quadrupled Deployment Velocity with Cypress

Last week, our VP of Engineering, Gleb Bahmutov, and Lightstep Product Engineers, Jonah Moses and Ted Pennings, presented a live webcast on how the team went from a 15-page document of step-by-step QA instructions for each deployment, to quadrupling deployment velocity with Cypress. Some of the key

How to Run Changed Specs First in a Pull Request

Imagine a large project with hundreds of Cypress spec files. If you work on just one feature and open a pull request with small code changes and corresponding updates to 1 Cypress spec file, it makes sense to try running that changed spec file first. Chances are high that any new issues will be intr

Guest Post: High Quality React apps with Nx & Cypress

Juri Strumpflohner is a passionate software developer, most recently focusing on the JavaScript ecosystem. He’s a Google Developers Expert in Web Technologies, regularly speaks at conferences, meetups, teaches at Egghead.io or writes articles such as this one. Currently Juri works as a JavaScript Ar

Live Webcast | How Lightstep Quadrupled Deployment Velocity with Cypress

Register Lightstep’s full-context observability platform enables developers to streamline issue detection and resolution. As their product grew, they realized they needed to dramatically upgrade and automate their QA strategy to ensure quality in their data-driven applications and increase deploymen

Guest Post: How UR used Cypress to convert a legacy app

André Elmoznino Laufer is software developer at Valtech, currently consulting at the national Swedish Educational Broadcasting Company and also volunteering as a coding teacher for kids at CoderDojo. For the past year I’ve been working at UR (the national Swedish Educational Broadcasting Company), h

Streaming Test Results

In this blog post, I will show how to receive individual test results as soon as each test is finished, without waiting for the entire run to finish. A single Cypress test might be fast, but if you wait for an entire large test run to finish, you might as well watch the paint dry. What if the first

Run Cypress Tests on Netlify Using a Single Line

Netlify became a popular Continuous Delivery (CD) and hosting solution for a lot of organizations due to its simplicity and power. Pick your repository, click "Deploy site" ... and the site magically appears. The example below shows me adding the cypress-io/netlify-plugin-cypress-example repository

Guest Post: Improve your error screenshots in Cypress

Note: This post was originally published by Filip Hric on Medium. Filip is a QA lead at Slido, a lifelong IT enthusiast with a background in psychology, and a Cypress Ambassador. Cypress makes it incredibly easy to read their code. Even people that don’t work with Cypress here at Slido can easily un

Working with Select elements and Select2 widgets in Cypress

This blog post shows how to control native HTML elements from Cypress tests. We will also look at how to work with a very popular wrapper library called Select2, that supplants the native elements with an additional HTML markup. Note: you can find the source code for this post in the recipe "Select

How to Test an Application that Changes a CSS Variable

The App Let's take an application that has an element. When the user picks a new color, the application changes a CSS variable which controls the background color. In action, it looks like this: The application in action The HTML markup below has only the input color element. This is the body of th

Guest Post: Modern Web Testing with Cypress

This post was originally published by Marie Drake on her blog, mariedrake.com. Marie is a Cypress Ambassador, Principal Test Automation Engineer at News UK, and a tech blogger with a focus of educating Developers and QA Engineers on testing and test automation. The web has evolved. Finally, testing

Testing Edge Data Cases with Network Stubbing and App Actions

Your application might be a layered cake of historical data. Often old records are missing pieces because at first the web application never asked for them, or never validated them. The current web application might be much stricter with its user inputs, never allowing incomplete data to be entered.

Guest Post: Some UI testing problems and the Cypress way

Note: This post was originally published by Stefano Magni on dev.to. Stefano is a a passionate, remote front-end engineer, a Cypress Ambassador, and an instructor. He is currently working on a UI Testing Best Practices project on GitHub, and is sharing this post to gather direct feedback. Why is tes

Webcast Recording | How PlanGrid (Autodesk) Achieved Consistency in Automation Across 20 Development Teams

Last week, our VP of Engineering, Gleb Bahmutov, Engineering Manager at Plangrid (Autodesk), Graeme Harvey, and Tech Lead at Plangrid (Autodesk), Brendan Drew, presented a live webcast on how the Automation Platform team runs over 900 Cypress tests daily to make sure PlanGrid’s mission-critical serv

Working with iframes in Cypress

Cypress has a ... difficulty working with iframes. Mostly because all built-in cy DOM traversal commands do hard stop the moment they hit #document node inside the iframe. iframe when it sees a Cypress command (re-enactment) If your web application uses iframes, then working with elements in those i

Testing the Browser Notification API

How do you test native browser APIs like Notification? If you don't have a real modern browser during tests, it seems like a challenge. But Cypress controls an Electron or Chrome or (soon) Firefox browser, so your tests can access the real thing. This blog post shows typical tests for a tiny web app

When Can The Test Stop?

Imagine a small web page application that shows a window Confirm popup when the user clicks a button. The HTML might look like this Assertion counting Click on the button, should show Window confirm dialog Click The application works. Window Confirm application We can write a test to confirm (pun

How to load the React DevTools extension in Cypress

DevTools is invaluable for debugging an application, or understanding why an end-to-end test goes astray. During Cypress tests, you can click on any command to see additional information for that command, inspect DOM elements, and observe network calls. Many frameworks provide their own extensions t

Guest Post: Software tests as a documentation tool

Note: This post was originally published by Stefano Magni on Medium. Stefano is a a passionate, remote front-end engineer, a Cypress Ambassador, and an instructor. He is currently working on a UI Testing Best Practices project on GitHub, and is sharing this post to gather direct feedback. Documentin

Asserting Network Calls from Cypress Tests

The Cypress Test Runner can "see" everything happening inside the web application under test: DOM elements, cookies, local storage items, location, etc. The Test Runner can also spy on and stub network requests the application is making to its backend API or even to the 3rd party APIs. This blog pos

Webcast Recording | How Siemens SW Hub increased their test productivity by 38% with Cypress

Last week, our VP of Engineering, Gleb Bahmutov, and Test Lead for Siemens SW Hub, Murat Ozcan, presented a live webcast on how the Siemens SW Hub Cloud team uses Cypress to run hundreds of tests across multiple platforms to ensure all systems are working correctly for their Smart Infrastructure clo

Test Your Web App in Dark Mode

Recently, operating systems iOS13, Android 10, MacOS Catalina and Windows 10 have introduced Dark Mode support with most browsers supporting CSS prefers-color-scheme. On Mac, you can pick Light (default), Dark or Auto mode via System Preferences / General options. I believe the Apple UI designers ar

Guest Post: I did a Cypress workshop and this is what I learned

Note: This post was originally published by Filip Hric on Medium. Filip is a QA lead at Slido, a lifelong IT enthusiast with a background in psychology, and a Cypress ambassador. I had a chance to do a Cypress workshop at this year’s TestCrunch in Brno. It was an amazing experience. I knew I loved t

Use meaningful smoke tests

Let's say you cover your application with end-to-end tests. You achieve the elusive 100% code coverage using the Cypress code coverage plugin. Is this enough to guarantee a good user experience? Maybe, but I'm not so sure. Another question to consider is: as Cypress.io prepares to release its cross-

Guest Post: Writing E2E Tests Without Breaking Your Development Flow

Note: This post was written by Benjie Gillam, maintainer of the popular OSS project PostGraphile. He specializes in building tools for GraphQL, Node.js, and PostgreSQL developers. Getting started with a fullstack JavaScript project these days is exciting, but often overwhelming. There's so much tool

Drastically Simplify Testing on CI with Cypress GitHub Action

Setting up continuous integration server is ... no one's favorite activity. Copying and pasting config YAML or JSON files, pushing code, waiting for the server to reject your commit due to wrong indentation or a missing comma - it is a very frustrating experience, we get it. This is why we are so ex

Self-testing JAM pages

JAM Stack has become a popular way to build websites - you can write your pages using Markdown (the M in JAM), build using JavaScript tools that fetch data from APIs and get mostly static sites that are very fast. In this blog post I will show how each Markdown page can also include its own end-to-e

Split a very long Cypress test into shorter ones using App Actions

Imagine a very long-running end-to-end test. For me, anything longer than 20 seconds seems like way too long of a test to effectively work with. When running on Continuous Integration server, a long test might even run out of memory, crashing the Test Runner. How can we split a longer test into a se

Show Code Coverage on GitLab CI

End-to-end tests can be extremely effective at covering a lot of your application's code. Even a single realistic test, because it loads and exercises the entire application, can cover 60-70% of the statements. Introduction Let's look at a concrete example in the cypress-example-todomvc-redux reposi

Guest Post: New to front-end testing? Start from the top of the pyramid!

An easier approach to get immediate results (and satisfaction) from the front-end testing world. Note: This post was originally published by Stefano Magni on ITNEXT via Medium. Stefano is a passionate, positive-minded Front-end developer at Conio (an Italian Bitcoin startup), a Cypress ambassador, a

Webcast Recording | Continuous Integration with Cypress

Last week, our VP of Engineering Gleb Bahmutov, and Cypress Ambassador + Founder of Let Your Nerd Be Heard, Justin James, presented a live webcast on how to set up Cypress correctly on a variety of CI providers, from TeamCity to Travis to CircleCI. Some of the key topics they covered include: The di

Testing Electron.js applications using Cypress - alpha release

Note: At this time, Cypress is no longer supporting testing Electron.js applications, and are no longer publishing the binaries referenced in this post. Thank you for your interest, and check out our Roadmap for information on upcoming features from Cypress. Cypress is great for testing web applicat

Cypress code coverage for applications created using create-react-app v3

Creating a new fully featured React application using Create React App v3 is as easy as two NPM commands $ npm i -g create-react-app + [email protected] $ create-react-app my-new-app Then switch to the new folder my-new-app and run npm start or yarn start - the application will be transpiled,

Guest Post: The concept of "Monitoring Tests"

Note: This post was originally published by Stefano Magni on dev.to as the third installment of a 4-part series on UI testing best practices. Stefano is a passionate, positive-minded Front-end developer at Conio (an Italian Bitcoin startup), a Cypress ambassador, a testing & automation lover, and a

Guest Post: Sleeping better at night with Cypress.io

Note: This post was originally published by Tomasz Łakomy on dev.to. Tomasz is a Senior Frontend Engineer at OLX Group, tech speaker, egghead.io instructor, and jQuery evangelist. Disclaimer: This post is a longer (?), better [citation needed] version of the talk I gave at JSHeroes 2019. The scene I

Guest Post: Await, do not make your E2E tests sleep

Note: This post was originally published by Stefano Magni on the ITNEXT Medium blog. Stefano is a passionate, positive-minded Front-end developer at Conio (an Italian Bitcoin startup), a Cypress ambassador, a testing & automation lover, and a speaker. I’m working on a big UI Testing Best Practices p

Guest Post: Angular - Adding Cypress UI Tests to Your DevOps Pipeline

Note: This post was originally published by Justin James on Medium. Justin is the founder of Let Your Nerd Be Heard, a Microsoft MVP, Angular lover, speaking coach & speaker specializing in making the complex simple and easy to understand. In the DevOps world that we live in, we want everything to b

Live Webcast | Slido’s QA Journey With Cypress

Register You’ve probably seen Slido used at events and meetings. With over 244,000 successful events and 7.1 million questions asked, Slido enables users to crowdsource top questions to drive conversations and engage participants in live and online events. With top customers including Spotify, Lufth

Testing the first built-in browser module, KV Storage, using Cypress

If you live on the bleeding edge of browser technology, you are probably excited about new standard modules that soon (might) come built-in to modern browsers. Built-in storage module There is a TC39 proposal to include a set of standard modules in each browser. The goal is to prevent the need to bu

Using Events Emitted from Your Application during End-to-End Tests

Imagine a typical web application during end-to-end testing. The test runner (in this case Cypress.io) is driving the app via its DOM elements; it is clicking and typing and scrolling. The test runner checks if the application behaves correctly by explicitly executing assertions against the displaye

Shrink the Untestable Code With App Actions And Effects

This blog post shows how to shrink untestable code and pushes it to the edges of the applications. The core of the web application will remain easy to check from our tests, while external effects can be observed or stubbed. The Cypress.io test runner has limitations. For example, when controlling th

Modern Front-End Testing with Cypress

This is a guest post from Michael Herman, a software engineer and educator who lives in the Denver area. He is the founder of TestDriven.io. Besides development, he enjoys building financial models, tech writing, hiking, and teaching. Cypress is a modern web automation test framework designed to sim

When Can The Test Click?

Recently a user opened a Cypress issue #3135 asking why the cy.click() command was behaving differently than the way click behaved when a user clicks on the button. We’ve seen many people ask similar questions involving click and wanted to address how to ensure your tests behave the same way as a us

Using Nrwl Nx to Add Cypress to Your Angular Development Workflow

This is a guest post from Benjamin Cabanes, an Angular Engineer at the Angular consulting firm Nrwl (Narwhal Technologies Inc.) in Toronto. As an active contributor to Nrwl’s Nx open source project, Ben also works with Nrwl’s American enterprise clients in the Telecom and Financial Services space. B

Application Actions: Use Them Instead of Page Objects

Hello, reader. This article was an opinion piece about why app actions are better than page objects. The page object pattern is well known in the QA community, and widely and successfully used in the Cypress ecosystem. Writing maintainable end-to-end tests is challenging. Often testers create anothe

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. Experim

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

Run Your End-to-end Tests 10 Times Faster with Automatic Test Parallelization

I have no patience waiting for a lot of Cypress end-to-end tests to finish running on CI. Just sitting and waiting … staring at the CI badge. Any run taking longer than a minute feels like an eternity. Our Cypress development team felt this pain and decided to do something about it. Today we have a

Setting up Bitbucket Pipelines with proper caching of NPM and Cypress

This is a guest post from Ondřej Janošík, co-owner of Notum Technologies, full-stack developer and clean code enthusiast based in the Czech Republic. Bitbucket Pipelines & Deployments is integrated CI/CD for Bitbucket Cloud that’s trivial to set up, automating your code from test to production (at l

Record Test Artifacts from any Docker CI

We worked hard to make sure the Cypress Test Runner could be compatible with every continuous integration system. Jenkins, Travis, Circle, Zeit Now, Google Cloud Build, or your own homegrown CI system - they should all work with zero or minimum effort. We also worked hard to make our Dashboard Servi

Fast Tests, Tiny Docker Image

If the Cypress Test Runner were a person, its best friend would be a person named Docker. Really, Cypress and Docker work so well together! For example, all our CI builds are using cypress-docker-images to include all necessary dependencies in order to successfully install and run Cypress tests. Jus

JSON Schemas are your True Testing Friend

We use JSON schemas to describe the data flowing through our system, document API routes, test server code and even validate fixtures used during end-to-end testing. This long(ish) blog post describes in detail how we did this. Introduction At Cypress we have 3 large pieces of software: The Cypres

Sliding Down the Testing Pyramid

A good end-to-end test runner, like Cypress, can be very effective at performing integration tests and even at running unit tests. In this blog post I will show how to write view component tests for a Hyperapp application and how to unit test individual functions. The same approach can work for comp

Angular + Cypress = Love

This is a guest post from Jeff Whelpley, CTO at Swish, Google Developer Expert, co-creator of Angular Universal (server rendering for Angular 2+), co-organizer of Boston Angular Meetup, co-organizer of Boston AI Meetup, guest/panelist on AngularAir and Adventures in Angular podcasts, and frequent sp

When Can The Test Start?

Can the test runner be too quick? Can the tests start before the application is ready to handle the test steps? It definitely can happen. This blog post shows a little trick one can use to detect when a web application really starts, so that the test runner never has to wait longer than necessary. A

End-to-End Snapshot Testing

Snapshot testing has taken the JavaScript unit testing world by storm. It removes much of the manual coding and much of the boilerplate, leaving the test runner to save or compare produced values. This blog post shows how the Cypress Test Runner can bring the same power to your end-to-end tests. Ex

An Alternative to Protractor for Angular Projects

Fans of Angular CLI get Protractor end-to-end tests generated with each scaffolded project. In this blog post I will show how to add Cypress E2E tests instead with minimum effort (and TypeScript support)! Scaffolding a project Scaffolding an Angular project using ng new is a huge time saver. Just 4

Testing apps hosted on Codepen.io

Lots of people love to quickly throw web applications on Codepen.io. Who can refuse a quick and powerful way to start writing code immediately; sharing results is almost instant. In this blog post I will show how to write end-to-end tests for web apps embedded in a Codepen. Warning: no longer workin

Testing Vue web applications with Vuex data store & REST backend

In this blog post we will test a typical web application that uses a central data store to manage state. The data store communicates with the backend that stores the data long term. You can find patterns in React + Redux applications, Angular + MobX and countless other combinations. This example loo

Control an AngularJS Application From E2E Tests

Cypress runs close to your application. Only a thin iframe separates the production code from the testing code. Thus Cypress can take shortcuts and control your application code directly, bypassing always going through the DOM. For example imagine you are developing an AngularJS 1.x TodoMVC applicat

Add GUI to your E2E API tests

We like to pretend there are two disjointed end-to-end test types: API and browser automation tests. And that the tools used are very different; the API tests are executed by a CLI test runner, while automation tests all fire up a browser. Yet, a good E2E automation test runner, in my opinion, shoul

Conditional testing and control flow in Cypress

Conditional testing refers to the common programming pattern where you perform one action, or a different one. It’s also known as control flow. Typically this is expressed as: If X, then Y, else Z. Many of our users come into our chat asking how they can do “conditional testing” in Cypress. The ques

Good error messages

If I can paraphrase a cliché: bad things happen to good programs Things go wrong, even in the most carefully coded and thoroughly tested applications. In my opinion, a sign of a good app is if it gives meaningful and useful error messages when things go wrong. At Cypress we spend a lot of time tryin

10 ways we improved our docs

As part of our strategy towards going open source, we wanted to make several improvements to our documentation. There were a few problems we wanted to address: There was no clear explanation of why you would want to use Cypress. There were no clear “Getting Started” guides that introduced you to Cyp

Immutable deploys and Cypress

It is simple to run Cypress both locally and on CI. And it is simple to point your tests to a different server. If you are using immutable deploys, Cypress can be the ultimate “health check”. If the tests pass locally, then on CI, and then at a newly deployed environment - the chances are very high

Atom test utils

At Cypress, we love creating tools that make testing easier and more productive. We also write a lot of tests ourselves to both guide our development and help prevent regressions. While having a lot of tests is a great way to prevent regressions, it can get in the way of getting quick feedback durin