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import { getRedboxHeader, retry } from 'next-test-utils'
import { nextTestSetup } from 'e2e-utils'
export function runFullReloadHmrTest(nextConfig: {
basePath: string
assetPrefix: string
}) {
const { next } = nextTestSetup({
files: __dirname,
nextConfig,
patchFileDelay: 500,
})
const { basePath } = nextConfig
it('should warn about full reload in cli output - anonymous page function', async () => {
const start = next.cliOutput.length
const browser = await next.browser(
basePath + '/hmr/anonymous-page-function'
)
const cliWarning =
'Fast Refresh had to perform a full reload when ./pages/hmr/anonymous-page-function.js changed. Read more: https://nextjs.org/docs/messages/fast-refresh-reload'
expect(await browser.elementByCss('p').text()).toBe('hello world')
expect(next.cliOutput.slice(start)).not.toContain(cliWarning)
const currentFileContent = await next.readFile(
'./pages/hmr/anonymous-page-function.js'
)
const newFileContent = currentFileContent.replace(
'<p>hello world</p>',
'<p id="updated">hello world!!!</p>'
)
await next.patchFile(
'./pages/hmr/anonymous-page-function.js',
newFileContent
)
expect(await browser.waitForElementByCss('#updated').text()).toBe(
'hello world!!!'
)
// CLI warning
expect(next.cliOutput.slice(start)).toContain(cliWarning)
// Browser warning
const browserLogs = await browser.log()
expect(
browserLogs.some(({ message }) =>
message.includes(
"Fast Refresh will perform a full reload when you edit a file that's imported by modules outside of the React rendering tree."
)
)
).toBeTruthy()
})
it('should warn about full reload in cli output - runtime-error', async () => {
const start = next.cliOutput.length
const browser = await next.browser(basePath + '/hmr/runtime-error')
const cliWarning =
'Fast Refresh had to perform a full reload due to a runtime error.'
await retry(async () => {
expect(await getRedboxHeader(browser)).toMatch(/whoops is not defined/)
})
expect(next.cliOutput.slice(start)).not.toContain(cliWarning)
const currentFileContent = await next.readFile(
'./pages/hmr/runtime-error.js'
)
const newFileContent = currentFileContent.replace(
'whoops',
'<p id="updated">whoops</p>'
)
await next.patchFile('./pages/hmr/runtime-error.js', newFileContent)
expect(await browser.waitForElementByCss('#updated').text()).toBe('whoops')
// CLI warning
expect(next.cliOutput.slice(start)).toContain(cliWarning)
// Browser warning
const browserLogs = await browser.log()
expect(
browserLogs.some(({ message }) =>
message.includes(
'[Fast Refresh] performing full reload because your application had an unrecoverable error'
)
)
).toBeTruthy()
})
}
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