2023-12-18
3103
#jest#react
Yomi Eluwande
332
Dec 18, 2023 â‹… 11 min read

How to test React Hooks

Yomi Eluwande JavaScript developer. Wannabe designer and Chief Procrastinator at Selar.co and worklogs.co.

Recent posts:

ai dev tool power rankings

AI dev tool power rankings & comparison [July 2025 edition]

Which AI frontend dev tool reigns supreme in July 2025? Check out our power rankings and use our interactive comparison tool to find out.

Chizaram Ken
Jul 2, 2025 â‹… 3 min read
how API client automation can save you hours in development

How API client automation can save you hours in development

Learn how OpenAPI can automate API client generation to save time, reduce bugs, and streamline how your frontend app talks to backend APIs.

Lewis Cianci
Jul 1, 2025 â‹… 7 min read
Interface Segregation Principle

SOLID series: Understanding the Interface Segregation Principle (ISP)

Discover how the Interface Segregation Principle (ISP) keeps your code lean, modular, and maintainable using real-world analogies and practical examples.

Oyinkansola Awosan
Jun 30, 2025 â‹… 7 min read
​​How HTML’s Selectedcontent Element Improves Dropdowns

​​How HTML’s <selectedcontent> element improves dropdowns

is an experimental HTML element that gives developers control over how a selected option is displayed, using just HTML and CSS.

Temitope Oyedele
Jun 27, 2025 â‹… 6 min read
View all posts

10 Replies to "How to test React Hooks"

  1. good article, concise summary on the basics & tooling for react hook-component testing. thanks! how do you stub HTTP requests? for example, is there a way to intercept the fetch requests going into the first Formula 1 app on mount use effect hook?

  2. It is just for testing simple react hooks function that you can get from anywhere. You haven’t added Testing for async hook component. :disappointed:

  3. Nice Article! Can you please tell if there is any way to override the default value of the useState(0). For example if I initially want to render the counter using the value 1 instead of 0?

  4. This article and the react addition of hooks makes me want to throw up. If you add state to a pure function, *that function is no longer pure*!! If you add effects to the function, *it is not a pure function!!!*

    The reason this is hard to test is *because* the functions are no longer pure once you do this! There’s a huge amount of context that has to exist for that function to work, none of which is a passed in argument! You can’t have your cake and eat it too.

  5. In the example with Testing async Hook functions I am getting the following error
    Timed out in waitForNextUpdate after 1000ms.

Leave a Reply