rn-fetch-blob/test/test-0.9.5.js

import RNTest from './react-native-testkit/'
import React from 'react'
import RNFetchBlob from 'react-native-fetch-blob'
import {
  StyleSheet,
  Text,
  View,
  ScrollView,
  Platform,
  Dimensions,
  Image,
  TouchableOpacity,
} from 'react-native';

window.XMLHttpRequest = RNFetchBlob.polyfill.XMLHttpRequest
window.Blob = RNFetchBlob.polyfill.Blob

const fs = RNFetchBlob.fs
const { Assert, Comparer, Info, prop } = RNTest
const describe = RNTest.config({
  group : '0.9.5',
  run : true,
  expand : false,
  timeout : 20000,
})
const { TEST_SERVER_URL, TEST_SERVER_URL_SSL, FILENAME, DROPBOX_TOKEN, styles } = prop()
const dirs = RNFetchBlob.fs.dirs

let prefix = ((Platform.OS === 'android') ? 'file://' : '')

describe('issue #122 force response data format', (report, done) => {

  RNFetchBlob.fetch('GET', `${TEST_SERVER_URL}/public/json-dummy.json`, {
    'RNFB-Response' : 'base64'
  })
  .then((res) => {
    let r = RNFetchBlob.base64.decode(res.data)
    report(
      <Assert key="test data verify" expect="fetchblob-dev" actual={JSON.parse(r).name}/>,
      <Assert key="should successfully decode the data" expect={true} actual={true}/>)
    return RNFetchBlob.fetch('GET', `${TEST_SERVER_URL}/public/json-dummy.json`)
  })
  .then((res) => {
    report(
      <Assert key="response should in format of plain-text" expect="fetchblob-dev" actual={JSON.parse(res.data).name}/>)
    done()
  })
  .catch(() => {
    report(
      <Assert key="Should successfully decode the data" expect={true} actual={false}/>)
    done()
  })

})