Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Mastering React Test-Driven Development

You're reading from   Mastering React Test-Driven Development Build simple and maintainable web apps with React, Redux, and GraphQL

Arrow left icon
Product type Paperback
Published in Sep 2022
Publisher Packt
ISBN-13 9781803247120
Length 564 pages
Edition 2nd Edition
Languages
Tools
Arrow right icon
Author (1):
Arrow left icon
Daniel Irvine Daniel Irvine
Author Profile Icon Daniel Irvine
Daniel Irvine
Arrow right icon
View More author details
Toc

Table of Contents (26) Chapters Close

Preface 1. Part 1 – Exploring the TDD Workflow
2. Chapter 1: First Steps with Test-Driven Development FREE CHAPTER 3. Chapter 2: Rendering Lists and Detail Views 4. Chapter 3: Refactoring the Test Suite 5. Chapter 4: Test-Driving Data Input 6. Chapter 5: Adding Complex Form Interactions 7. Chapter 6: Exploring Test Doubles 8. Chapter 7: Testing useEffect and Mocking Components 9. Chapter 8: Building an Application Component 10. Part 2 – Building Application Features
11. Chapter 9: Form Validation 12. Chapter 10: Filtering and Searching Data 13. Chapter 11: Test-Driving React Router 14. Chapter 12: Test-Driving Redux 15. Chapter 13: Test-Driving GraphQL 16. Part 3 – Interactivity
17. Chapter 14: Building a Logo Interpreter 18. Chapter 15: Adding Animation 19. Chapter 16: Working with WebSockets 20. Part 4 – Behavior-Driven Development with Cucumber
21. Chapter 17: Writing Your First Cucumber Test 22. Chapter 18: Adding Features Guided by Cucumber Tests 23. Chapter 19: Understanding TDD in the Wider Testing Landscape 24. Index 25. Other Books You May Enjoy

Spying on the fetch API

In this section, we’ll use the Fetch API to send customer data to our backend service. We already have an onSubmit prop that is called when the form is submitted. We’ll morph this onSubmit call into a global.fetch call, in the process of adjusting our existing tests.

In our updated component, when the Submit button is clicked, a POST HTTP request is sent to the /customers endpoint via the fetch function. The body of the request will be a JavaScript Object Notation (JSON) object representation of our customer.

The server implementation that’s included in the GitHub repository will return an updated customer object with an additional field: the customer id value.

If the fetch request is successful, we’ll call a new onSave callback prop with the fetch response. If the request isn’t successful, onSave won’t be called and we’ll instead render an error message.

You can think of fetch as a more advanced form...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at £16.99/month. Cancel anytime