Articles & Resources

To create tests that you can depend on, isolate and manage the tests’ dependencies.

The use of conditionals should be considered an anti-pattern in regression tests.

The DevTools built into all modern browsers are an extension of the webapp development environment. We'll walk through a practical example of devtools usage which covers a number of core features.

Selenium 4 added support to retrieve resource utilization information from the browser. This article discusses some potential applications for this feature, with examples written in Scala.

A lot of ink has been spilled about configuration file formats. Popular formats like JSON, TOML, YAML, and XML each have their advantages and drawbacks. There's an alternative that should be receiving more attention: Typescript!

Infinite scrolling on dynamic collections poses a challenge to data consistency. This article describes approaches for guaranteeing there are no duplicate items while still enabling the benefits of caching.

Selenium 4 added support to subscribe to console logs and intercept/inspect network requests. This article discusses some potential applications for this feature, with examples written in Scala.

The Reflect and Proxy ES6 objects give developers access to functionality previously hidden within Javascript engine internals. We use these tools extensively at Reflect in order to intercept and redefine core web APIs.

A simple implementation of a task queue using plain SQL without external locks.

Ask any software team, and they’ll tell you that testing is an important part of their development process. With early stage products there’s usually only a few key workflows and testing them manually doesn’t take much time. But as the product becomes more complex, and as the stakes get higher with more and more users depending on the product, what once was a straightforward process becomes anything but.

This article describes traditional and modern approaches to building a regression test suite for your web application. Reflect is a no code web testing tool that supports both functional and visual testing.

This article describes continuous delivery in Agile software development and general CI/CD principles through examples and best practices.

This article describes continuous integration in Agile software development and provides examples of how you can implement continuous integration in the modern software development lifecycle.

The importance of testing, and specifically regression testing, is hard to over-state. We'll talk about regression testing, what it is, what is isn't, and offer a few recommendations for how to best implement it in your organization.

Today we're excited to share that we've raised a $1.8 million seed round led by Battery Ventures and Craft Ventures.

Learn about the different ways you can test your React apps, including libraries and frameworks that make React tests easier to build and maintain.

React has a great ecosystem not just for making development easier, but for making testing easier as well. We surveyed YCombinator founders to understand what libraries, frameworks, and methodologies they use to test their React applications.

These are our favorite sites to use when testing automation frameworks, along with some best practices to apply when validating your automation approach.

Visual validation is one of the most common tasks in web development for helping maintainers ensure the visual aspects of their user experience. Automated tools, such as Reflect, allow you to easily track your site's UI over time and be notified whenever changes appear.

Communication is key to effective software testing. This guide discusses a typical software quality assurance (QA) process, including ownership and communication guidelines.

Automated testing tools exist across all parts of the testing pyramid, and it's up to you to decide which parts of your development lifecycle that you want to automate.

Last week we launched the free tier of Reflect via Product Hunt. We were fortunate enough to become the #5 Product of the Day! Here we talk about our experience on the Product Hunt front page as well as share some traffic and conversion numbers.