mocha-react-native

mocha-react-native

This is a collection of helpers to get Mocha tests working nicely with React Native projects. It includes runtime babel transformations, aliasing imports and mocking modules.

How to use

$ npm install --save-dev mocha-react-native

Create a file in your project: test/mocha.opts

Paste the following into that file.

--compilers js:mocha-react-native/init

Advanced

Alias / Mock

You can add an alias or mock a react-native module to help with testing.

Create a file in your project: test/mocks.js

Add some code using addAlias and/or addMock:

import {addAlias, addMock} from 'mocha-react-native';

addAlias('react-native-linear-gradient', 'actual-empty-object');

addMock('exponent', {
  Font: {
    style: () => ({fontFamily: ''}),
  },
});

Tell mocha about that file by adding a line to test/mocha.opts:

--compilers js:mocha-react-native/init
--require ./test/mocks.js

Whitelist a react-native npm package

You can specify one ore more react-native npm packages that should be transformed by babel. This is done for you automatically if the package starts with react-native- however there are some packages that do not follow this convention and should be manually whitelisted.

Create a file in your project: test/whitelist.js

Use addPackage to whitelist packages by name:

import {addPackage} from 'mocha-react-native';

addPackage('react-clone-referenced-element');

Tell mocha about that file by adding a line to test/mocha.opts:

--compilers js:mocha-react-native/init
--require ./test/whitelist.js

License

This software is ICS licensed.