startup_test.js

  
 import { generateSimpleViteManifest, mockApp, mockConfig, mockFetch } from './util.js'
import { expect } from 'chai'
import * as td from 'testdouble'
import { Response } from 'node-fetch'

describe('Service startup', function () {
  before(async function () {
    mockConfig({ urls: ['http://ui-server/'] })
  })

  after(function () {
    td.reset()
  })

  it('only fetches all files once', async function () {
    const counters = {
      '/example.js': 0,
      '/test.txt': 0,
      '/index.html.js': 0,
      '/index.html': 0
    }
    mockFetch({
      'http://ui-server': {
        '/manifest.json': generateSimpleViteManifest({
          'example.js': { imports: ['test.txt'] },
          'test.txt': { },
          'index.html': {
            file: 'index.html.js',
            isEntry: true,
            imports: ['example.js']
          }
        }),
        '/example.js': () => {
          counters['/example.js']++
          return new Response('this is example', { headers: { 'content-type': 'application/javascript' } })
        },
        '/test.txt': () => {
          counters['/test.txt']++
          return new Response('this is test', { headers: { 'content-type': 'text/plain' } })
        },
        '/index.html.js': () => {
          counters['/index.html.js']++
          return new Response('this is index.html.js', { headers: { 'content-type': 'application/javascript' } })
        },
        '/index.html': () => {
          counters['/index.html']++
          return new Response('<html><head></head><body>it\'s me</body></html>', { headers: { 'content-type': 'text/html' } })
        }
      }
    })
    await mockApp()

    Object.entries(counters).forEach(([key, value]) => {
      expect(value, `${key}`).to.equal(1)
    })
  })
})