Function setupTests

test/integration/image-optimizer/test/util.ts:1704–1906

(ctx: SetupTestsCtx)

}

export const setupTests = (ctx: SetupTestsCtx) => {
  const nextConfig = new File(join(ctx.appDir, 'next.config.js'))

  const originalIsNextDev = (global as any).isNextDev
  afterAll(() => {
    ;(global as any).isNextDev = originalIsNextDev
  })

  describe('dev support w/o next.config.js', () => {
    if (ctx.nextConfigImages) {
      // skip this test because it requires next.config.js
      return
    }

    const isDev = true
    // Set global.isNextDev for getDistDir()
    ;(global as any).isNextDev = isDev
    const imagesDir = join(ctx.appDir, getDistDir(), 'cache', 'images')
    const size = 384 // defaults defined in server/config.ts
    const curCtx: RunTestsCtx = {
      ...ctx,
      w: size,
      q: 75,
      isDev,
      imagesDir,
    }

    beforeAll(async () => {
      const json = JSON.stringify({
        // See https://github.com/vercel/next.js/pull/60972
        outputFileTracingRoot: join(__dirname, '../../../..'),
        experimental: curCtx.nextConfigExperimental,
      } satisfies NextConfig)
      nextConfig.replace('{ /* replaceme */ }', json)
      curCtx.nextOutput = ''
      curCtx.appPort = await findPort()
      curCtx.app = await launchApp(curCtx.appDir, curCtx.appPort, {
        onStderr(msg) {
          curCtx.nextOutput += msg
        },
        cwd: curCtx.appDir,
      })
      await cleanImagesDir(imagesDir)
    })
    afterAll(async () => {
      nextConfig.restore()
      if (curCtx.app) await killApp(curCtx.app)
    })

    runTests(curCtx)
  })

  describe('dev support with next.config.js', () => {
    const isDev = true
    // Set global.isNextDev for getDistDir()
    ;(global as any).isNextDev = isDev
    const imagesDir = join(ctx.appDir, getDistDir(), 'cache', 'images')
    const size = 400