What you'll learn:
Testing simple and complex React applications with React Testing Library
React Testing best Practices: how to test behavior instead of implementation
Making the most of Jest watch mode, including running only one file or test at a time
Common errors returned by Testing Library and how to correct them
Requirements
Experience with jаvascript
Basic experience with React
Familiarity with React hooks and context (these are explained briefly in optional React portions of the course; however previous experience would be helpful)
Description
React Testing Library has become an extremely popular option for testing React, and with good reason! This detailed, comprehensive course provides a solid foundation for React app tests.
Best Practices
React Testing Library is famously opinionated about testing best practices, and is written to encourage these best practices. This course teaches:
testing behavior over testing implementation
tests that interact with your app the way a user would
finding elements by accessibility handles, to make sure your code is accessible as possible
Broad range of testing examples
The course apps start very with very simple examples (clicking a button to change its color) and work up to progressively more complicated testing concepts, such as:
testing asynchronous page changes
simulating data from a server using Mock Service Worker
applying a context provider to a component when rendering
The course builds up to complex concepts gradually, in a way designed to support your learning and ensure your success.
Practice your new skills
You will also have plenty of opportunities to practice what you've learned. The course provides "code quizzes" while building the course projects, where you can apply what you learned and then watch a video to see the solution. The (optional) final section provides even more exercises to complete the second app and reinforce concepts from the course.
Optional React lectures
Any significant React code covered in the course is isolated into separate lectures. Students have a choice: those who want to reinforce their React skills (or learn new ones!) can watch those lectures, while students who feel confident in their React skills can skip them.
Supportive Instructor
The instructor has a proven track record of responding to course Q&A in a helpful and supportive way. She loves to engage with students, answer questions about course concepts, and help debug students' code for the course projects.
Who this course is for
React coders who want to learn how to write functional tests for their apps
React application engineers who want confidence that writing code doesn't break existing behavior (tests, for the win!)
Homepage
https://www.udemy.com/course/react-testing-library/

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