implementing Test Coverage Reporting for React Components Using Jest and React Testing Library
I'm collaborating on a project where I'm attempting to set up I'm relatively new to this, so bear with me. I'm currently working with an scenario with generating test coverage reports for my React application using Jest in conjunction with React Testing Library. Despite having the coverage settings in my Jest configuration, the coverage report I generate doesn't include any of my functional component files. I've ensured I'm using the latest versions of both libraries: Jest 27.0.6 and React Testing Library 12.1.2. My jest.config.js looks like this: ```javascript module.exports = { preset: 'react-native', testEnvironment: 'jsdom', collectCoverage: true, collectCoverageFrom: ['src/components/**/*.{js,jsx}', 'src/hooks/**/*.{js,jsx}'], coverageDirectory: 'coverage', coverageThreshold: { global: { branches: 80, functions: 80, lines: 80, statements: 80, }, }, }; ``` I've added the collectCoverageFrom option, but when I run `npm test -- --coverage`, the output shows coverage for my services and utility functions but completely omits my components and hooks. I’ve tried including the paths directly in collectCoverageFrom, but it still doesn’t capture them. I also checked that the components are not excluded in my .gitignore or any other settings. Additionally, when I run the tests, I see no warnings or errors indicating why the components might be skipped. Is there a specific configuration I might be missing, or does anyone know if there are known issues with coverage reporting in these versions? How do I ensure my component tests are included in the coverage report? Any feedback is welcome! This is for a application running on macOS. I'm open to any suggestions.