It seems babel transform works in my testcase code, but es6 syntax in node_modules
does not.
npm 4.5
MacOS Sierra
{
"preset": "react-native",
"globals": {
"__DEV__": true
},
"transform": {
"^.+\\.js$": "babel-jest"
}
}
{
"env": {
"test": {
"presets": ["react-native"],
"plugins": [["import", { "libraryName": "antd-mobile" }]]
},
"development": {
"presets": ["react-native"],
"plugins": [["import", { "libraryName": "antd-mobile" }]]
},
"production": {
}
}
}
import 'react-native';
import React from 'react';
import renderer from 'react-test-renderer';
import Index from '../index.ios.js';
it('renders correctly', () => {
const tree = renderer.create(
<Index />
);
});
{
"private": true,
"scripts": {
"web": "roadhog server",
"build-web": "cross-env NODE_ENV=production roadhog build",
"start": "react-native start",
"ios": "cross-env NODE_ENV=development node themes/theme.rn.config.js && react-native run-ios",
"android": "cross-env NODE_ENV=development node theme/theme.rn.config.js && react-native run-android",
"lint": "eslint --ext .js src test",
"precommit": "npm run lint",
"test": "cross-env NODE_ENV=test jest --config .jest.config.json --no-cache"
},
"engines": {
"install-node": "6.9.2"
},
"theme": "./themes/theme.web.config.js",
"dependencies": {
"antd-mobile": "^1.0.8",
"babel-runtime": "^6.9.2",
"dva": "^1.2.1",
"lodash": "^4.17.4",
"moment": "^2.18.1",
"rc-form": "^1.3.0",
"react": "15.4.2",
"react-dom": "15.4.2",
"react-native": "0.42.3",
"react-native-chart": "^1.0.8-beta",
"react-native-gesture-password": "^0.2.0",
"react-native-scrollable-tab-view": "^0.7.4",
"react-native-smart-gesture-password": "^2.1.0",
"react-navigation": "^1.0.0-beta.7",
"recharts": "^0.21.2",
"socket.io-client": "^1.7.3"
},
"devDependencies": {
"babel-eslint": "^7.1.1",
"babel-jest": "^19.0.0",
"babel-plugin-dva-hmr": "^0.3.2",
"babel-plugin-import": "^1.1.1",
"babel-plugin-transform-runtime": "^6.9.0",
"babel-preset-react-native": "^1.9.1",
"cross-env": "^4.0.0",
"eslint": "^3.12.2",
"eslint-config-airbnb": "^13.0.0",
"eslint-plugin-import": "^2.2.0",
"eslint-plugin-jsx-a11y": "^2.2.3",
"eslint-plugin-react": "^6.8.0",
"expect": "^1.20.2",
"husky": "^0.13.3",
"jest": "^19.0.2",
"less-vars-to-js": "^1.1.2",
"postcss-pxtorem": "^4.0.0",
"react-test-renderer": "15.4.2",
"redbox-react": "^1.3.2",
"roadhog": "^0.6.0-beta1"
}
}
jest version = 19.0.2
test framework = jasmine2
config = {
"automock": false,
"bail": false,
"browser": false,
"cacheDirectory": "/var/folders/h3/bfmnzb_j3zg3pdffgps1w3vh0000gn/T/jest",
"clearMocks": false,
"coveragePathIgnorePatterns": [
"/node_modules/"
],
"coverageReporters": [
"json",
"text",
"lcov",
"clover"
],
"expand": false,
"globals": {
"__DEV__": true
},
"haste": {
"defaultPlatform": "ios",
"platforms": [
"android",
"ios",
"native"
],
"providesModuleNodeModules": [
"react-native"
]
},
"moduleDirectories": [
"node_modules"
],
"moduleFileExtensions": [
"js",
"json",
"jsx",
"node"
],
"moduleNameMapper": [
[
"^[./a-zA-Z0-9$_-]+\\.(bmp|gif|jpg|jpeg|png|psd|svg|webp)$",
"RelativeImageStub"
],
[
"^React$",
"/Users/erickim/Documents/Develop/react/glfm/node_modules/react"
]
],
"modulePathIgnorePatterns": [
"/Users/erickim/Documents/Develop/react/glfm/node_modules/react-native/Libraries/react-native/",
"/Users/erickim/Documents/Develop/react/glfm/node_modules/react-native/packager/"
],
"noStackTrace": false,
"notify": false,
"preset": "react-native",
"resetMocks": false,
"resetModules": false,
"roots": [
"/Users/erickim/Documents/Develop/react/glfm"
],
"snapshotSerializers": [],
"testEnvironment": "/Users/erickim/Documents/Develop/react/glfm/node_modules/jest-environment-node/build/index.js",
"testMatch": [
"**/__tests__/**/*.js?(x)",
"**/?(*.)(spec|test).js?(x)"
],
"testPathIgnorePatterns": [
"/node_modules/"
],
"testRegex": "",
"testResultsProcessor": null,
"testURL": "about:blank",
"timers": "real",
"transformIgnorePatterns": [
"node_modules/(?!(jest-)?react-native|react-clone-referenced-element)"
],
"useStderr": false,
"verbose": null,
"watch": false,
"setupFiles": [
"/Users/erickim/Documents/Develop/react/glfm/node_modules/babel-polyfill/lib/index.js",
"/Users/erickim/Documents/Develop/react/glfm/node_modules/react-native/jest/setup.js"
],
"transform": [
[
"^.+\\.js$",
"/Users/erickim/Documents/Develop/react/glfm/node_modules/babel-jest/build/index.js"
]
],
"rootDir": "/Users/erickim/Documents/Develop/react/glfm",
"name": "005c8bf9b4d78dfa0bb0e32c0c55b0fb",
"testRunner": "/Users/erickim/Documents/Develop/react/glfm/node_modules/jest-jasmine2/build/index.js",
"cache": false,
"watchman": true
}
I figured it out. By default jest doesn't transform ES6 js code from node_modules
. In my case, the package react-navigation
module need to be translated. So I added transformIgnorePatterns
to my jest configuration and everything worked:
{
"preset": "react-native",
"setupFiles": ["./test/setup.js"],
"globals": {
"__DEV__": true
},
"transform": {
"^.+\\.js$": "babel-jest"
},
"transformIgnorePatterns": [
"node_modules/(?!react-native|react-navigation)/"
]
}
The problem is that node doesn't understand ES6 modules and JEST is node process, so using import
inside your test throw this error. Instead of babel we specifically tell Webpack to transcompile ES6 modules.So, we can fix this error by telling babel that when we are in testing scenario please combile ES6 modules by using below babel configuration settings
"env": {
"test": {
"plugins": ["transform-es2015-modules-commonjs"]
}
}
you can download this babel plugin by npm
npm install --save-dev babel-plugin-transform-es2015-modules-commonjs
Hopefully this will fix your problem.
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