next.js/test/development/basic/legacy-decorators.test.ts

import { join } from 'path'
import webdriver from 'next-webdriver'
import { createNext, FileRef } from 'e2e-utils'
import { NextInstance } from 'e2e-utils'
import { check } from 'next-test-utils'

describe('Legacy decorators SWC option', () => {
  let next: NextInstance

  beforeAll(async () => {
    next = await createNext({
      files: {
        'jsconfig.json': new FileRef(
          join(__dirname, 'legacy-decorators/jsconfig.json')
        ),
        pages: new FileRef(join(__dirname, 'legacy-decorators/pages')),
      },
      dependencies: {
        mobx: '6.3.7',
        'mobx-react': '7.2.1',
      },
    })
  })
  afterAll(() => next.destroy())

  it('should compile with legacy decorators enabled', async () => {
    let browser
    try {
      browser = await webdriver(next.url, '/')
      const text = await browser.elementByCss('#count').text()
      expect(text).toBe('Current number: 0')
      await browser.elementByCss('#increase').click()
      await check(
        () => browser.elementByCss('#count').text(),
        /Current number: 1/
      )
    } finally {
      if (browser) {
        await browser.close()
      }
    }
  })
})