/
index.test.js
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/
index.test.js
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/* eslint-env jest */
import { join } from 'path'
import {
killApp,
findPort,
launchApp,
nextStart,
nextBuild,
check,
hasRedbox,
getRedboxHeader,
} from 'next-test-utils'
import webdriver from 'next-webdriver'
import fs from 'fs-extra'
jest.setTimeout(1000 * 30)
const appDir = join(__dirname, '../')
const nextConfig = join(appDir, 'next.config.js')
let appPort
let app
async function hasImageMatchingUrl(browser, url) {
const links = await browser.elementsByCss('img')
let foundMatch = false
for (const link of links) {
const src = await link.getAttribute('src')
if (src === url) {
foundMatch = true
break
}
}
return foundMatch
}
function runTests(mode) {
it('should load the images', async () => {
let browser
try {
browser = await webdriver(appPort, '/')
await check(async () => {
const result = await browser.eval(
`document.getElementById('basic-image').naturalWidth`
)
if (result === 0) {
throw new Error('Incorrectly loaded image')
}
return 'result-correct'
}, /result-correct/)
await browser.eval(
'document.getElementById("unsized-image").scrollIntoView()'
)
await check(async () => {
const result = await browser.eval(
`document.getElementById('unsized-image').naturalWidth`
)
if (result === 0) {
throw new Error('Incorrectly loaded image')
}
return 'result-correct'
}, /result-correct/)
expect(
await hasImageMatchingUrl(
browser,
`http://localhost:${appPort}/_next/image?url=%2Ftest.jpg&w=420&q=75`
)
).toBe(true)
} finally {
if (browser) {
await browser.close()
}
}
})
it('should work when using flexbox', async () => {
let browser
try {
browser = await webdriver(appPort, '/flex')
await check(async () => {
const result = await browser.eval(
`document.getElementById('basic-image').width`
)
if (result === 0) {
throw new Error('Incorrectly loaded image')
}
return 'result-correct'
}, /result-correct/)
} finally {
if (browser) {
await browser.close()
}
}
})
if (mode === 'dev') {
it('should show missing src error', async () => {
const browser = await webdriver(appPort, '/missing-src')
await hasRedbox(browser)
expect(await getRedboxHeader(browser)).toContain(
'Image is missing required "src" property. Make sure you pass "src" in props to the `next/image` component. Received: {"width":200}'
)
})
it('should show invalid src error', async () => {
const browser = await webdriver(appPort, '/invalid-src')
await hasRedbox(browser)
expect(await getRedboxHeader(browser)).toContain(
'Invalid src prop (https://google.com/test.png) on `next/image`, hostname is not configured under images in your `next.config.js`'
)
})
}
}
describe('Image Component Tests', () => {
describe('dev mode', () => {
beforeAll(async () => {
appPort = await findPort()
app = await launchApp(appDir, appPort)
})
afterAll(() => killApp(app))
runTests('dev')
})
describe('server mode', () => {
beforeAll(async () => {
await nextBuild(appDir)
appPort = await findPort()
app = await nextStart(appDir, appPort)
})
afterAll(() => killApp(app))
runTests('server')
})
describe('serverless mode', () => {
beforeAll(async () => {
await fs.writeFile(
nextConfig,
`
module.exports = {
target: 'serverless'
}
`
)
await nextBuild(appDir)
appPort = await findPort()
app = await nextStart(appDir, appPort)
})
afterAll(async () => {
await fs.unlink(nextConfig)
await killApp(app)
})
runTests('serverless')
})
})