Simple testing configuration for React Native with Jest
npm i --save-dev react-native-babel-jest jest-cliAdd configuration to package.json file
{
"scripts": {
"test": "jest"
},
...
"jest": {
"scriptPreprocessor": "<rootDir>/node_modules/react-native-babel-jest",
"setupFiles": [
"<rootDir>/node_modules/react-native-babel-jest/env.js"
],
"automock": true,
"unmockedModulePathPatterns": [
"react",
"enzyme",
"promise",
"source-map"
]
}
}Write your test in __tests__ folder, run test command
npm testWe recommend you using enzyme to render components, and enzyme-to-json to make snapshot testing. See more in the example below.