Knowledge Base (React Native Test Cases)

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1. Setting up Jest for testing React Native applications

Step 1: Install Jest and related dependencies

npm install --save-dev jest @testing-library/react-native react-test-renderer


Step 2: Create a Jest configuration file

// jest.config.js
module.exports = {
  preset: '@testing-library/react-native',
  transform: {
    '^.+\\.js$': 'babel-jest',


Step 3: Configure Babel for Jest

  "presets": ["module:metro-react-native-babel-preset"]


Step 4: Add a script to run tests in package.json

// package.json
  "scripts": {
    "test": "jest"


Step 5: Run the tests

npm test