next.js/test/e2e/app-dir/app-alias/app-alias.test.ts

import { nextTestSetup } from 'e2e-utils'

describe('app-dir alias', () => {
  const { next, isNextStart, skipped } = nextTestSetup({
    files: __dirname,
    skipDeployment: true,
  })

  if (skipped) {
    return
  }

  it('should handle typescript paths alias correctly', async () => {
    const html = await next.render('/button')
    expect(html).toContain('click</button>')
  })

  it('should resolve css imports from outside with src folder presented', async () => {
    const browser = await next.browser('/button')
    const fontSize = await browser
      .elementByCss('button')
      .getComputedCss('font-size')
    expect(fontSize).toBe('50px')
  })

  if (isNextStart) {
    it('should not contain installed react/react-dom version in client chunks', async () => {
      const appBuildManifest = await next.readJSON(
        '.next/app-build-manifest.json'
      )
      Object.keys(appBuildManifest.pages).forEach((page) => {
        const containFrameworkChunk = appBuildManifest.pages[page].some(
          (chunk) => {
            return chunk.includes('framework')
          }
        )
        expect(containFrameworkChunk).toBe(false)
      })
    })

    it('should generate app-build-manifest correctly', async () => {
      // Remove other page CSS files:
      const manifest = await next.readJSON('.next/app-build-manifest.json')

      expect(manifest.pages).not.toBeEmptyObject()
    })
  }
})