Chris gives an introduction to React Testing and walks through a Jest and React Testing Library tutorial. Testing is a critical part of the React development process. There is no shortage of different ways to test our apps. This talk will give an intro to general testing principles and tools before diving into the specifics of testing React components using Jest and React Testing Library, the tooling recommended by the React core team.
Guest presenter, Chris Schmitz, Senior Software Engineer at Handshake, will teach you how to get started with Jest and the React Testing Library.
👉 Jest Documentation
👉 React Testing Library
If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?
In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.
Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.
Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.
The popularity of React Native comes from its advantages. Some of its advantages are as follows:
Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.
React Native is very close to native. Consider the following aspects as described on the React Native website:
Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.
#android app #frontend #ios app #mobile app development #benefits of react native #is react native good for mobile app development #native vs #pros and cons of react native #react mobile development #react native development #react native experience #react native framework #react native ios vs android #react native pros and cons #react native vs android #react native vs native #react native vs native performance #react vs native #why react native #why use react native
Testing is complicated. I’ve certainly never been good at it. For the longest time, I’ve only been focused on basic function input-output unit tests. Why? Because they were easy — you didn’t need to render HTML, you didn’t need to query DOM elements, you didn’t need to interact with said DOM elements. But of course, React component testing is a necessity for any mature codebase. And it finally came time for me to sit down and figure it out.
That’s when I discovered React Testing Library. And suddenly, everything seemingly became much simpler. All the complexities that I’ve encountered, but not understood, that made me put off React component testing disappeared. Hopefully, the same will happen for you.
#react-testing-library #unit-testing #react #jest #interaction-testing
Learn how to write unit tests for your React components using Jest and the React Testing Library.
We will be writing some unit tests for React components using the Jest framework (https://jestjs.io/). We will begin by creating a react app using create-react-app. Then we will create a component & write some unit tests for it. We will finish by writing some snapshot tests to verify changes to the component tree.
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#react #jest #react testing library
React Testing Library With Jest Tutorial For Beginners | How To Test React Components ?
In this video we will learn about unit testing in React application using React testing library for testing React components and Jest as test runner. This will be a beginner friendly tutorial and we will first understand what is React Testing Library, some rules and how jest is associated with it and after that we will write the unit test cases for our React Login application.
⭐️ GitHub link for Reference - https://github.com/dmalvia/React-testing-Library-Tutorial
⭐️ React Testing Library - https://testing-library.com/
⭐️ Support my channel - https://www.buymeacoffee.com/dipeshmalvia
🔗 React Roadmap for Developers in 2021
🔗 Social Medias 🔗
⭐️ Tags ⭐️ - React Testing Library Crash Course - React Testing Library Tutorial - How to Test React Components - Learn React Testing Library With Login Form - Start Testing In ReactJs
⭐️ Hashtags ⭐️ #React #Testing #Library #Beginners #Tutorials
Disclaimer: It doesn't feel good to have a disclaimer in every video but this is how the world is right now. All videos are for educational purpose and use them wisely. Any video may have a slight mistake, please take decisions based on your research. This video is not forcing anything on you.
Like most, when I first started using Testing Library, I used Fire Event to test component interactions. After all, this API shipped with the library itself and was used in the test examples in the documentation. But I soon discovered that Fire Event had serious limitations. I would try clicking something and the expected effect did not happen. Why?
To understand this issue, we need to better understand browser events. When a user clicks something in their browser, multiple events are triggered —
focus. Similarly, when typing something, the
keyPress events all trigger! Because a single user interaction could trigger multiple events, developers have multiple options for implementation. This is where I ran into my issue.
Fire Event, unfortunately, requires you to use the method for the corresponding event handler to trigger. If an element has an
onClick event handler, I have to use
fireEvent.click; if an element has an
onMouseDown event handler, I have to use
fireEvent.mouseDown. In other words, I need to know the exact implementation of the event handler to successfully use
#react #jest #integration-testing #unit-testing #react-testing-library #react native