Function beforePageLoad

test/development/app-hmr/hmr.test.ts:18–25

(page)

      const browser = await next.browser('/does-not-exist', {
        beforePageLoad(page) {
          page.on('request', (request) => {
            const url = new URL(request.url())
            if (url.pathname === '/does-not-exist') {
              requestCount++
            }
          })
        },
      })
      const body = await browser.elementByCss('body').text()
      expect(body).toContain('404')