Testing React Hooks with Confidence

Radoslav Stankov

Mock Service Worker 2.0

Artem Zakharchenko

Component Testing With Vitest

Maya Shavin

Using Tests for What?!

Evyatar Alush

Test Effective Development

Shai Reznik

It's a (Testing) Trap! - Common Testing Pitfalls and How to Solve Them

Ramona Schwering

Who is Testing the Tests?

Simon de Lang

How to Catch a11y Defects During Unit and E2E Testing

Emily Xiong

Zen and the Art of UI Components Testing

Tally Barak

Unit Testing Angular Applications

Filip Voska

The Art of ‘Humble Views’: Testing React Native Apps the Smart Way

Mo Khazali

Testing Library: Everybody Uses It, But Nobody Understands It

Matan Borenkraout

TestJS Summit

TestJS Summit 2023

In this talk, we explore the divisive world of testing, where developers often find themselves torn between writing no tests and striving for 100% test coverage. Learn how to navigate these polarizing positions and adopt a more nuanced strategy that makes testing efficient and effective.We'll dive into the concept of 'Humble Views,' where we minimize untestable objects by extracting logic from UI elements into test-friendly parts of the codebase. This approach simplifies testing, focusing on business logic instead of UI complexities. Discover how the Model-View-Presenter (MVP) architecture helps achieve this, with presenters serving as a logical layer for testing and hooks aiding in separating logic from UI components.Throughout the talk, we'll discuss the trade-offs of this approach, the role of End-to-End (E2E) tests, and how to strike the perfect balance between too much and too little testing. Join us as we delve into the art of creating 'Humble Views,' ensuring that our React Native apps are scalable, maintainable, and effectively tested!

TestJS Summit 2021

Developers want to sleep tight knowing they didn't break production. Companies want to be efficient in order to meet their customer needs faster and to gain competitive advantage sooner. We ALL want to be cost effective... or shall I say... TEST EFFECTIVE!<ul><li>But how do we do that?</li><li>Are the "unit" and "integration" terminology serves us right?</li><li>Or is it time for a change? When should we use either strategy to maximize our "test effectiveness"?</li></ul>In this talk I'll show you a brand new way to think about cost effective testing with new strategies and new testing terms!It’s time to go DEEPER! <a href="https://www.froala.com/wysiwyg-editor?pb=1"> </a>

Yes, we do need to test our UI components but... If this rings a bell, and especially if your application has advanced UI functionality, this talk is for you.In this talk, we will cover what are the factors that need to be tested in UI components. We will challenge the testing pyramid when it comes to UI Components testing, and review the different tools that we have nowadays for making UI component testing complete Zen.

Testing is an essential part of software development, but it can be a tricky and time-consuming process. The popular testing-library package is a widely used tool that helps developers write reliable and maintainable frontend tests based on a behavior driven approach, but many users are not fully aware of how it works. In this talk, I, as one of the maintainers of the package, give an in-depth look into testing-library. You will learn how testing-library is designed to encourage good testing practices and how it can help you write more maintainable tests.

It's been half a decade since Mock Service Worker (MSW) has changed the way developers approach and think of API mocking in JavaScript. With all its innovation, I felt we could do more. I spent the last year making that happen. I can't wait to share it with all of you!

Testing is important. Proper unit tests can eliminate the chance for bugs to appear. But which testing framework will be suitable? Let’s explore how we can develop a reliable and efficient strategy for component development and testing with Vitest

TestJS Summit 2022

In the talk I will explain the pains and problems of form validation Then I will explain the mental model of unit tests, and compare it to how we think about form validations.I will introduce vest with a bit of live coding showing its unit testing syntax.

Angular offers many things out of the box, including various testing-related functionalities. This presentation will demonstrate how we can build on Angular's solid unit testing fundamentals and apply certain patterns that make testing easier. Topics covered include: test doubles, testing module pattern, harnesses, "recipes" on how to test some common cases, and more!

For developers, it is better to catch any a11y defects during unit and e2e testings. This talk is going to show how to automate a11y testing using jest and cypress. <a href="https://www.froala.com/wysiwyg-editor?pb=1"> </a>

<div>Have you ever wondered: "who's testing the tests"? Of course, tests are only valuable if they catch bugs, but how would one validate that? Well, let me tell you about mutation testing! Mutation testing is the act of testing your test verifying that they catch bugs. Of course, you can do this manually inserting bugs and running the tests, but a mutation testing framework can do this for you! Join me and learn the basics of mutation testing and how to use StrykerJS, the mutation testing framework for JavaScript or TypeScript.At the end of this talk, you'll be the one that is testing your tests, and it won't even cost you much time!</div> <a href="https://www.froala.com/wysiwyg-editor?pb=1"> </a>

It’s a trap” - a call or feeling we all might be familiar with, not only when it comes to Star Wars. It’s signalizing a sudden moment of noticing imminent danger. This situation is an excellent allegory for an unpleasant realization in testing. Imagine having the best intentions when it comes to testing but still ending up with tests failing to deliver you any value at all? Tests who are feeling like a pain to deal with? When writing frontend tests, there are lots of pitfalls on the way. In sum, they can lead to lousy maintainability, slow execution time, and - in the worst-case - tests you cannot trust. But it doesn’t have to be that way. In this session, I will talk about developers’ common mistakes (including mine), at least from my experience. And, of course, on how to avoid them. Testing doesn’t need to be painful, after all. <a href="https://www.froala.com/wysiwyg-editor?pb=1"> </a>

TestJS Summit - January, 2021

The talk will be presented as a refactoring story - will start from the messy untestable component, cover it with a brittle smoke test, and then show how to move all our react component logic into a custom hook and test this hook. Will present patterns to test things like - useState, effects, and Apollo. <a href="https://www.froala.com/wysiwyg-editor?pb=1"> </a>

#unit testing