text: const chai = require('chai')
  const sinon = require('sinon')
  const sinonStubPromise = require('sinon-stub-promise')
  const chaiAsPromised = require('chai-as-promised')
  const Feed = require('../../src/index')
  const RssParser = require('../../src/parsers/RssParser')
  
  const expect = chai.expect
  sinonStubPromise(sinon)
  chai.use(chaiAsPromised)
  
  describe('Feed.parseFeed', () => {
  
    beforeEach(() => {
      this.feed = new Feed()
    })
  
  
    it('should successfully parse rss feed', () => {
      const rssParserStub = sinon.stub(RssParser.prototype, 'parse').returns({title: 'Test'})
  
      const result = this.feed.parseFeed({rss: {channel: ['OK']}})
      rssParserStub.restore()
      return expect(result).to.eventually.deep.equals({title: 'Test'})
    })
  
  
    it('should be rejected because format does not have a parser', () => {
      const result = this.feed.parseFeed({data: []})
  
      return expect(result).to.be.rejectedWith('Unknown feed type')
    })
  })
  