How to test a prop update on React component

Question

What is the correct way of unit testing a React component prop update.

Here is my test fixture;

describe(\'updating the value\', function(){
                 


        

Answer 1

Quick addition, as I was looking for an answer for testing-library, and didn't find it here: there's an example in this issue, and it looks like this:

const {container} = render()

// update the props, re-render to the same container
render(, {container})

Alternatively, testing-library now offers a "rerender" method that accomplishes the same thing.