docs/tests/unit/get-rss-feeds.js

const Parser = require('rss-parser')
const { getChangelogItems } = require('../../lib/changelog')
const fs = require('fs')
const path = require('path')
const parser = new Parser({ timeout: 5000 })
const rssFeedContent = fs.readFileSync(path.join(process.cwd(), 'tests/fixtures/rss-feed.xml'), 'utf8')

describe('getChangelogItems module', () => {
  let changelog
  beforeAll(async () => {
    const feed = await parser.parseString(rssFeedContent)
    changelog = await getChangelogItems('GitHub Actions:', feed)
  })

  it('changelog contains 3 items', async () => {
    expect(changelog.length).toEqual(3)
  })

  it('each changelog item has expected title, date, and href', async () => {
    const expectedChangelogValues = [
      {
        title: 'Authentication token format updates are generally available',
        date: '2021-03-31T22:22:03.000Z',
        href: 'https://github.blog/changelog/2021-03-31-authentication-token-format-updates-are-generally-available'
      },
      {
        title: 'Compare REST API now supports pagination',
        date: '2021-03-23T02:49:54.000Z',
        href: 'https://github.blog/changelog/2021-03-22-compare-rest-api-now-supports-pagination'
      },
      {
        title: 'GitHub Discussions GraphQL API public beta',
        date: '2021-02-23T18:21:40.000Z',
        href: 'https://github.blog/changelog/2021-02-23-github-discussions-graphql-api-public-beta'
      }
    ]

    for (let i = 0; i < 3; i++) {
      const changeLogEntry = changelog[i]
      const expectedEntry = expectedChangelogValues[i]
      expect(changeLogEntry.title).toBe(expectedEntry.title)
      expect(changeLogEntry.date).toBe(expectedEntry.date)
      expect(changeLogEntry.href).toBe(expectedEntry.href)
    }
  })
})