React Native Testing

example-login.js

import React from 'react';

const ReactShallowRenderer = require('react-test-renderer/shallow');

const renderer = new ReactShallowRenderer();

import {LoginScreen} from "../LoginScreen";

import {AsyncStorage} from 'react-native';

import { mock, release } from 'mock-async-storage'

import axios from 'axios';

mock()

describe('rendering',()=>{

    it('loads without crashing',()=>{

        AsyncStorage.setItem('user',{hello:'world'}).then(()=>{
            AsyncStorage.getItem('user').then(user=>{

                console.log('made it here',user);

            })
        })

        renderer.render(
            <LoginScreen/>
        )

        const Login = renderer.getMountedInstance();

        // Login.attemptLogin();

        const result = renderer.getRenderOutput();

        // expect(result).toEqual('Florida Grown')
    })

});

example-package.json

{
  "name": "Example",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node build.js; node node_modules/react-native/local-cli/cli.js start",
    "test": "jest"
  },
  "dependencies": {
    "axios": "^0.16.2",
    "mock-async-storage": "^1.0.3",
    "moment": "^2.18.1",
    "prop-types": "^15.5.10",
    "react": "^16.0.0-rc.2",
    "react-dom": "^16.0.0-rc.2",
    "react-native": "0.47.1",
    "react-native-ble-plx": "^0.4.0",
    "react-native-checkbox": "^1.1.0",
    "react-native-orientation": "git+https://github.com/yamill/react-native-orientation.git",
    "react-native-signature-capture": "^0.4.7",
    "react-native-svg": "^5.1.8",
    "react-native-uuid-generator": "^2.0.0",
    "react-navigation": "^1.0.0-beta.9",
    "react-navigation-is-focused-hoc": "^1.0.0",
    "react-redux": "^5.0.5"
  },
  "devDependencies": {
    "babel-jest": "20.0.3",
    "babel-preset-react-native": "1.9.2",
    "enzyme": "^2.9.1",
    "jest": "20.0.3",
    "react-addons-test-utils": "^15.0.0-rc.2",
    "react-test-renderer": "^16.0.0-alpha.12"
  },
  "jest": {
    "preset": "react-native"
  }
}