/
index.test.ts
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/
index.test.ts
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/* eslint-env jest */
import { join } from 'path'
import {
check,
findPort,
killApp,
launchApp,
nextBuild,
nextStart,
} from 'next-test-utils'
import webdriver from 'next-webdriver'
const appDir = join(__dirname, '../')
let appPort
let app
function runTests() {
it('should not optimize any image', async () => {
const browser = await webdriver(appPort, '/')
expect(
await browser.elementById('internal-image').getAttribute('src')
).toMatch('data:')
expect(
await browser.elementById('static-image').getAttribute('src')
).toMatch('data:')
expect(
await browser.elementById('external-image').getAttribute('src')
).toMatch('data:')
expect(await browser.elementById('eager-image').getAttribute('src')).toBe(
'/test.webp'
)
expect(
await browser.elementById('internal-image').getAttribute('srcset')
).toBeNull()
expect(
await browser.elementById('static-image').getAttribute('srcset')
).toBeNull()
expect(
await browser.elementById('external-image').getAttribute('srcset')
).toBeNull()
expect(
await browser.elementById('eager-image').getAttribute('srcset')
).toBeNull()
await check(async () => {
await browser.eval(
`window.scrollTo(0, 0); document.getElementById("external-image").scrollIntoView()`
)
return browser.eval(
`document.getElementById("external-image").currentSrc`
)
}, 'https://image-optimization-test.vercel.app/test.jpg')
await check(async () => {
await browser.eval(
`window.scrollTo(0, 0); document.getElementById("internal-image").scrollIntoView()`
)
return browser.elementById('internal-image').getAttribute('src')
}, '/test.png')
await check(async () => {
await browser.eval(
`window.scrollTo(0, 0); document.getElementById("static-image").scrollIntoView()`
)
return browser.elementById('static-image').getAttribute('src')
}, /test(.*)jpg/)
await check(async () => {
await browser.eval(
`window.scrollTo(0, 0); document.getElementById("external-image").scrollIntoView()`
)
return browser.elementById('external-image').getAttribute('src')
}, 'https://image-optimization-test.vercel.app/test.jpg')
await check(async () => {
await browser.eval(
`window.scrollTo(0, 0); document.getElementById("eager-image").scrollIntoView()`
)
return browser.elementById('eager-image').getAttribute('src')
}, '/test.webp')
expect(
await browser.elementById('internal-image').getAttribute('srcset')
).toBeNull()
expect(
await browser.elementById('static-image').getAttribute('srcset')
).toBeNull()
expect(
await browser.elementById('external-image').getAttribute('srcset')
).toBeNull()
expect(
await browser.elementById('eager-image').getAttribute('srcset')
).toBeNull()
})
}
describe('Unoptimized Image Tests', () => {
;(process.env.TURBOPACK_BUILD ? describe.skip : describe)(
'development mode',
() => {
beforeAll(async () => {
appPort = await findPort()
app = await launchApp(appDir, appPort)
})
afterAll(async () => {
await killApp(app)
})
runTests()
}
)
;(process.env.TURBOPACK_DEV ? describe.skip : describe)(
'production mode',
() => {
beforeAll(async () => {
await nextBuild(appDir)
appPort = await findPort()
app = await nextStart(appDir, appPort)
})
afterAll(async () => {
await killApp(app)
})
runTests()
}
)
})