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import { nextTestSetup } from 'e2e-utils'
import { assertNoRedbox, retry } from 'next-test-utils'
describe('app dir', () => {
const { next, isNextDev, isNextStart, skipped } = nextTestSetup({
files: __dirname,
// This is skipped when deployed because there are no assertions outside of next start/next dev
skipDeployment: true,
})
if (skipped) return
if (isNextStart) {
describe('Loading', () => {
it('should render loading.js in initial html for slow page', async () => {
const $ = await next.render$('/page-with-loading')
expect($('#loading').text()).toBe('Loading...')
})
})
}
if (isNextDev) {
describe('HMR', () => {
it('should not cause error when removing loading.js', async () => {
const browser = await next.browser('/page-with-loading')
await retry(async () => {
const headline = await browser.elementByCss('h1').text()
expect(headline).toBe('hello from slow page')
})
const cliOutputLength = next.cliOutput.length
await next.renameFile(
'app/page-with-loading/loading.js',
'app/page-with-loading/_loading.js'
)
await retry(async () => {
expect(next.cliOutput.slice(cliOutputLength)).toInclude('✓ Compiled')
})
// It should not have an error
await assertNoRedbox(browser)
// HMR should still work
await next.patchFile(
'app/page-with-loading/page.js',
(content) =>
content.replace('hello from slow page', 'hello from new page'),
async () =>
retry(async () => {
const headline = await browser.elementByCss('h1').text()
expect(headline).toBe('hello from new page')
await browser.close()
})
)
})
})
}
})
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