Function runTests

test/integration/data-fetching-errors/test/index.test.ts:26–124

(isDev = false)

let origIndexPage = ''

const runTests = (isDev = false) => {
  const getStderr = async () => {
    if (isDev) {
      let stderr = ''
      appPort = await findPort()
      app = await launchApp(appDir, appPort, {
        onStderr(msg) {
          stderr += msg || ''
        },
      })
      await renderViaHTTP(appPort, '/')
      await killApp(app)
      return stderr
    } else {
      const { stderr } = await nextBuild(appDir, undefined, { stderr: true })
      return stderr
    }
  }

  it('should show error for getStaticProps as component member', async () => {
    await fs.writeFile(
      indexPage,
      `
      const Page = () => 'hi'
      Page.getStaticProps = () => ({ props: { hello: 'world' }})
      export default Page
    `
    )
    expect(await getStderr()).toContain(
      `getStaticProps can not be attached to a page's component and must be exported from the page`
    )
  })

  it('should show error for getServerSideProps as component member', async () => {
    await fs.writeFile(
      indexPage,
      `
      import React from 'react'
      export default class MyPage extends React.Component {
        static async getServerSideProps() {
          return {
            props: {
              hello: 'world'
            }
          }
        }
        render() {
          return 'hi'
        }
      }
    `
    )
    expect(await getStderr()).toContain(
      `getServerSideProps can not be attached to a page's component and must be exported from the page`
    )
  })

  it('should show error for getStaticPaths as component member', async () => {