static.test.js

import {
  findPort,
  killApp,
  nextBuild,
  nextStart,
  renderViaHTTP,
  File,
  waitFor,
} from 'next-test-utils'
import webdriver from 'next-webdriver'
import { join } from 'path'

const appDir = join(__dirname, '../')
let appPort
let app
let browser
let html

const indexPage = new File(join(appDir, 'pages/static-img.js'))

const runTests = () => {
  it('Should allow an image with a static src to omit height and width', async () => {
    expect(await browser.elementById('basic-static')).toBeTruthy()
    expect(await browser.elementById('blur-png')).toBeTruthy()
    expect(await browser.elementById('blur-webp')).toBeTruthy()
    expect(await browser.elementById('blur-avif')).toBeTruthy()
    expect(await browser.elementById('blur-jpg')).toBeTruthy()
    expect(await browser.elementById('static-svg')).toBeTruthy()
    expect(await browser.elementById('static-gif')).toBeTruthy()
    expect(await browser.elementById('static-bmp')).toBeTruthy()
    expect(await browser.elementById('static-ico')).toBeTruthy()
    expect(await browser.elementById('static-unoptimized')).toBeTruthy()
  })
  it('Should use immutable cache-control header for static import', async () => {
    await browser.eval(
      `document.getElementById("basic-static").scrollIntoView()`
    )
    await waitFor(1000)
    const url = await browser.eval(
      `document.getElementById("basic-static").src`
    )
    const res = await fetch(url)
    expect(res.headers.get('cache-control')).toBe(
      'public, max-age=315360000, immutable'
    )
  })
  it('Should use immutable cache-control header even when unoptimized', async () => {
    await browser.eval(
      `document.getElementById("static-unoptimized").scrollIntoView()`
    )
    await waitFor(1000)
    const url = await browser.eval(
      `document.getElementById("static-unoptimized").src`
    )
    const res = await fetch(url)
    expect(res.headers.get('cache-control')).toBe(
      'public, max-age=31536000, immutable'
    )
  })
  it('Should automatically provide an image height and width', async () => {
    expect(html).toContain('width="400" height="300"')
  })
  it('Should allow provided width and height to override intrinsic', async () => {
    expect(html).toContain('width="150" height="150"')
  })
  it('Should add a blur to a statically imported image in "raw" mode', async () => {
    expect(html).toContain(
      `style="background-size:cover;background-position:0% 0%;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http%3A//www.w3.org/2000/svg' viewBox='0 0 400 300'%3E%3Cfilter id='b' color-interpolation-filters='sRGB'%3E%3CfeGaussianBlur stdDeviation='50'/%3E%3C/filter%3E%3Cimage filter='url(%23b)' x='0' y='0' height='100%25' width='100%25' href='data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAoKCgoKCgsMDAsPEA4QDxYUExMUFiIYGhgaGCIzICUgICUgMy03LCksNy1RQDg4QFFeT0pPXnFlZXGPiI+7u/sBCgoKCgoKCwwMCw8QDhAPFhQTExQWIhgaGBoYIjMgJSAgJSAzLTcsKSw3LVFAODhAUV5PSk9ecWVlcY+Ij7u7+//CABEIAAYACAMBIgACEQEDEQH/xAAnAAEBAAAAAAAAAAAAAAAAAAAABwEBAAAAAAAAAAAAAAAAAAAAAP/aAAwDAQACEAMQAAAAmgP/xAAcEAACAQUBAAAAAAAAAAAAAAASFBMAAQMFERX/2gAIAQEAAT8AZ1HjrKZX55JysIc4Ff/EABQRAQAAAAAAAAAAAAAAAAAAAAD/2gAIAQIBAT8Af//EABQRAQAAAAAAAAAAAAAAAAAAAAD/2gAIAQMBAT8Af//Z'/%3E%3C/svg%3E")`
    )
  })
}

describe('Build Error Tests', () => {
  it('should throw build error when import statement is used with missing file', async () => {
    await indexPage.replace(
      '../public/foo/test-rect.jpg',
      '../public/foo/test-rect-broken.jpg'
    )

    const { stderr } = await nextBuild(appDir, undefined, { stderr: true })
    await indexPage.restore()

    expect(stderr).toContain(
      "Module not found: Can't resolve '../public/foo/test-rect-broken.jpg"
    )
    // should contain the importing module
    expect(stderr).toContain('./pages/static-img.js')
    // should contain a import trace
    expect(stderr).not.toContain('Import trace for requested module')
  })
})
describe('Future Static Image Component Tests', () => {
  beforeAll(async () => {
    await nextBuild(appDir)
    appPort = await findPort()
    app = await nextStart(appDir, appPort)
    html = await renderViaHTTP(appPort, '/static-img')
    browser = await webdriver(appPort, '/static-img')
  })
  afterAll(() => {
    killApp(app)
  })
  runTests()
})