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ReactJS testInstance.findByProps() Method

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  • Last Updated : 04 Jun, 2021

React.js library is all about splitting the app into several components. Each Component has its own lifecycle. React provides us some in-built methods that we can override at particular stages in the life-cycle of the component.

In this article, we will know how to use testInstance.findByProps() method. The testInstance.findByProps() method is used to find a single descendant test instance with the provided props.

Creating React Application and Installing Module:

  • Step 1: Create a React application using the following command

    npx create-react-app foldername

  • Step 2: After creating your project folder i.e. foldername, move to it using the following command.

    cd foldername

Project Structure: It will look like the following.

Step 3: After creating the ReactJS application, Install the required module using the following command:

npm install react-test-renderer

Example 1:


import React from 'react';
import TestRenderer from 'react-test-renderer';
// Defining our App Component
const App = () => {
// Function to demonstrate TestRenderer.findByProps() method
function func(){
    const renderer = TestRenderer.create(
                TestRenderer.findByProps() method
    const myfindByProps = renderer.root;
// Returning our JSX code
return <>
// Exporting your Default App Component
export default App



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