caching_test.js

  
 import request from 'supertest'
import { expect } from 'chai'
import { generateSimpleViteManifest, mockApp, mockConfig, mockFetch } from '../spec/util.js'
import { client } from '../src/redis.js'
import * as td from 'testdouble'
import { getRedisKey } from '../src/util.js'

describe('File caching service', function () {
  let app

  beforeEach(async function () {
    await client.flushdb()
    mockConfig({ urls: ['http://ui-server/'] })
    mockFetch({
      'http://ui-server': {
        '/manifest.json': generateSimpleViteManifest({
          'index.html': {}
        }),
        '/index.html': () => new Response('<html><head></head><body>it\'s me</body></html>', { headers: { 'content-type': 'text/html' } })
      }
    })
    app = await mockApp()
  })

  afterEach(async function () {
    td.reset()
  })

  it('caches manifest data', async function () {
    const response = await request(app.server).get('/manifests')
    expect(response.statusCode).to.equal(200)
    const version = response.headers.version

    expect(await client.get(getRedisKey({ version, name: 'viteManifests' }))).to.equal('{"index.html":{"file":"index.html","meta":{"baseUrl":"http://ui-server/"}}}')
    expect(await client.get(getRedisKey({ version, name: 'oxManifests' }))).to.equal('[]')
  })

  it('caches html files', async function () {
    const response = await request(app.server).get('/index.html')
    expect(response.statusCode).to.equal(200)
    const version = response.headers.version

    const body = (await client.getBuffer(getRedisKey({ version, name: '/index.html:body' }))) || ''
    expect(body.toString()).to.equal('<html><head></head><body>it\'s me</body></html>')
    const meta = await client.get(getRedisKey({ version, name: '/index.html:meta' }))
    expect(meta).to.equal('{"headers":{"content-type":"text/html","dependencies":false}}')
  })

  it('serves files from redis and stores them in local cache', async function () {
    const version = '12345'
    await client.set(getRedisKey({ version, name: '/demo.js:meta' }), '{"headers":{"content-type":"application/javascript","dependencies":false}}')
    await client.set(getRedisKey({ version, name: '/demo.js:body' }), 'console.log("Demo")')

    const response = await request(app.server).get('/demo.js').set('version', version)
    expect(response.statusCode).to.equal(200)

    // just for testing purposes, delete the keys from redis to make sure, it is served from local cache
    await client.del(getRedisKey({ version, name: '/demo.js:meta' }))
    await client.del(getRedisKey({ version, name: '/demo.js:body' }))

    const response2 = await request(app.server).get('/demo.js').set('version', version)
    expect(response2.statusCode).to.equal(200)
  })
})