/
api-protocol-spec.ts
824 lines (736 loc) · 30.3 KB
/
api-protocol-spec.ts
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import { expect } from 'chai'
import { protocol, webContents, WebContents, session, BrowserWindow, ipcMain } from 'electron'
import { promisify } from 'util'
import { AddressInfo } from 'net'
import * as path from 'path'
import * as http from 'http'
import * as fs from 'fs'
import * as qs from 'querystring'
import * as stream from 'stream'
import { closeWindow } from './window-helpers'
import { emittedOnce } from './events-helpers'
const fixturesPath = path.resolve(__dirname, '..', 'spec', 'fixtures')
const registerStringProtocol = promisify(protocol.registerStringProtocol)
const registerBufferProtocol = promisify(protocol.registerBufferProtocol)
const registerFileProtocol = promisify(protocol.registerFileProtocol)
const registerHttpProtocol = promisify(protocol.registerHttpProtocol)
const registerStreamProtocol = promisify(protocol.registerStreamProtocol)
const interceptStringProtocol = promisify(protocol.interceptStringProtocol)
const interceptBufferProtocol = promisify(protocol.interceptBufferProtocol)
const interceptHttpProtocol = promisify(protocol.interceptHttpProtocol)
const interceptStreamProtocol = promisify(protocol.interceptStreamProtocol)
const unregisterProtocol = promisify(protocol.unregisterProtocol)
const uninterceptProtocol = promisify(protocol.uninterceptProtocol)
const text = 'valar morghulis'
const protocolName = 'sp'
const postData = {
name: 'post test',
type: 'string'
}
function delay (ms: number) {
return new Promise((resolve) => {
setTimeout(resolve, ms)
})
}
function getStream (chunkSize = text.length, data: Buffer | string = text) {
const body = new stream.PassThrough()
async function sendChunks () {
await delay(0) // the stream protocol API breaks if you send data immediately.
let buf = Buffer.from(data as any) // nodejs typings are wrong, Buffer.from can take a Buffer
for (;;) {
body.push(buf.slice(0, chunkSize))
buf = buf.slice(chunkSize)
if (!buf.length) {
break
}
// emulate some network delay
await delay(10)
}
body.push(null)
}
sendChunks()
return body
}
// A promise that can be resolved externally.
function defer(): Promise<any> & {resolve: Function, reject: Function} {
let promiseResolve: Function = null as unknown as Function
let promiseReject: Function = null as unknown as Function
const promise: any = new Promise((resolve, reject) => {
promiseResolve = resolve
promiseReject = reject
})
promise.resolve = promiseResolve
promise.reject = promiseReject
return promise
}
describe('protocol module', () => {
let contents: WebContents = null as unknown as WebContents
// NB. sandbox: true is used because it makes navigations much (~8x) faster.
before(() => contents = (webContents as any).create({sandbox: true}))
after(() => (contents as any).destroy())
async function ajax (url: string, options = {}) {
// Note that we need to do navigation every time after a protocol is
// registered or unregistered, otherwise the new protocol won't be
// recognized by current page when NetworkService is used.
await contents.loadFile(path.join(fixturesPath, 'pages', 'jquery.html'))
return contents.executeJavaScript(`ajax("${url}", ${JSON.stringify(options)})`)
}
afterEach(async () => {
await new Promise(resolve => protocol.unregisterProtocol(protocolName, (/* ignore error */) => resolve()))
await new Promise(resolve => protocol.uninterceptProtocol('http', () => resolve()))
})
describe('protocol.register(Any)Protocol', () => {
it('throws error when scheme is already registered', async () => {
await registerStringProtocol(protocolName, (req, cb) => cb())
await expect(registerBufferProtocol(protocolName, (req, cb) => cb())).to.be.eventually.rejectedWith(Error)
})
it('does not crash when handler is called twice', async () => {
await registerStringProtocol(protocolName, (request, callback) => {
try {
callback(text)
callback()
} catch (error) {
// Ignore error
}
})
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(text)
})
it('sends error when callback is called with nothing', async () => {
await registerBufferProtocol(protocolName, (req, cb) => cb())
await expect(ajax(protocolName + '://fake-host')).to.be.eventually.rejectedWith(Error, '404')
})
it('does not crash when callback is called in next tick', async () => {
await registerStringProtocol(protocolName, (request, callback) => {
setImmediate(() => callback(text))
})
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(text)
})
})
describe('protocol.unregisterProtocol', () => {
it('returns error when scheme does not exist', async () => {
await expect(unregisterProtocol('not-exist')).to.be.eventually.rejectedWith(Error)
})
})
describe('protocol.registerStringProtocol', () => {
it('sends string as response', async () => {
await registerStringProtocol(protocolName, (request, callback) => callback(text))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(text)
})
it('sets Access-Control-Allow-Origin', async () => {
await registerStringProtocol(protocolName, (request, callback) => callback(text))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(text)
expect(r.headers).to.include('access-control-allow-origin: *')
})
it('sends object as response', async () => {
await registerStringProtocol(protocolName, (request, callback) => {
callback({
data: text,
mimeType: 'text/html'
})
})
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(text)
})
it('fails when sending object other than string', async () => {
const notAString = () => {}
await registerStringProtocol(protocolName, (request, callback) => callback(notAString as any))
await expect(ajax(protocolName + '://fake-host')).to.be.eventually.rejectedWith(Error, '404')
})
})
describe('protocol.registerBufferProtocol', () => {
const buffer = Buffer.from(text)
it('sends Buffer as response', async () => {
await registerBufferProtocol(protocolName, (request, callback) => callback(buffer))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(text)
})
it('sets Access-Control-Allow-Origin', async () => {
await registerBufferProtocol(protocolName, (request, callback) => callback(buffer))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(text)
expect(r.headers).to.include('access-control-allow-origin: *')
})
it('sends object as response', async () => {
await registerBufferProtocol(protocolName, (request, callback) => {
callback({
data: buffer,
mimeType: 'text/html'
})
})
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(text)
})
it('fails when sending string', async () => {
await registerBufferProtocol(protocolName, (request, callback) => callback(text as any))
await expect(ajax(protocolName + '://fake-host')).to.be.eventually.rejectedWith(Error, '404')
})
})
describe('protocol.registerFileProtocol', () => {
const filePath = path.join(fixturesPath, 'test.asar', 'a.asar', 'file1')
const fileContent = fs.readFileSync(filePath)
const normalPath = path.join(fixturesPath, 'pages', 'a.html')
const normalContent = fs.readFileSync(normalPath)
it('sends file path as response', async () => {
await registerFileProtocol(protocolName, (request, callback) => callback(filePath))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(String(fileContent))
})
it('sets Access-Control-Allow-Origin', async () => {
await registerFileProtocol(protocolName, (request, callback) => callback(filePath))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(String(fileContent))
expect(r.headers).to.include('access-control-allow-origin: *')
})
it('sets custom headers', async () => {
await registerFileProtocol(protocolName, (request, callback) => callback({
path: filePath,
headers: { 'X-Great-Header': 'sogreat' }
}))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(String(fileContent))
expect(r.headers).to.include('x-great-header: sogreat')
})
it.skip('throws an error when custom headers are invalid', (done) => {
registerFileProtocol(protocolName, (request, callback) => {
expect(() => callback({
path: filePath,
headers: { 'X-Great-Header': (42 as any) }
})).to.throw(Error, `Value of 'X-Great-Header' header has to be a string`)
done()
}).then(() => {
ajax(protocolName + '://fake-host')
})
})
it('sends object as response', async () => {
await registerFileProtocol(protocolName, (request, callback) => callback({ path: filePath }))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(String(fileContent))
})
it('can send normal file', async () => {
await registerFileProtocol(protocolName, (request, callback) => callback(normalPath))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(String(normalContent))
})
it('fails when sending unexist-file', async () => {
const fakeFilePath = path.join(fixturesPath, 'test.asar', 'a.asar', 'not-exist')
await registerFileProtocol(protocolName, (request, callback) => callback(fakeFilePath))
await expect(ajax(protocolName + '://fake-host')).to.be.eventually.rejectedWith(Error, '404')
})
it('fails when sending unsupported content', async () => {
await registerFileProtocol(protocolName, (request, callback) => callback(new Date() as any))
await expect(ajax(protocolName + '://fake-host')).to.be.eventually.rejectedWith(Error, '404')
})
})
describe('protocol.registerHttpProtocol', () => {
it('sends url as response', async () => {
const server = http.createServer((req, res) => {
expect(req.headers.accept).to.not.equal('')
res.end(text)
server.close()
})
await server.listen(0, '127.0.0.1')
const port = (server.address() as AddressInfo).port
const url = 'http://127.0.0.1:' + port
await registerHttpProtocol(protocolName, (request, callback) => callback({ url }))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(text)
})
it('fails when sending invalid url', async () => {
await registerHttpProtocol(protocolName, (request, callback) => callback({ url: 'url' }))
await expect(ajax(protocolName + '://fake-host')).to.be.eventually.rejectedWith(Error, '404')
})
it('fails when sending unsupported content', async () => {
await registerHttpProtocol(protocolName, (request, callback) => callback(new Date() as any))
await expect(ajax(protocolName + '://fake-host')).to.be.eventually.rejectedWith(Error, '404')
})
it('works when target URL redirects', async () => {
const server = http.createServer((req, res) => {
if (req.url === '/serverRedirect') {
res.statusCode = 301
res.setHeader('Location', `http://${req.rawHeaders[1]}`)
res.end()
} else {
res.end(text)
}
})
after(() => server.close())
await server.listen(0, '127.0.0.1')
const port = (server.address() as AddressInfo).port
const url = `${protocolName}://fake-host`
const redirectURL = `http://127.0.0.1:${port}/serverRedirect`
await registerHttpProtocol(protocolName, (request, callback) => callback({ url: redirectURL }))
const r = await ajax(url)
expect(r.data).to.equal(text)
})
it('can access request headers', (done) => {
protocol.registerHttpProtocol(protocolName, (request) => {
expect(request).to.have.property('headers')
done()
}, () => {
ajax(protocolName + '://fake-host')
})
})
})
describe('protocol.registerStreamProtocol', () => {
it('sends Stream as response', async () => {
await registerStreamProtocol(protocolName, (request, callback) => callback(getStream()))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(text)
})
it('sends object as response', async () => {
await registerStreamProtocol(protocolName, (request, callback) => callback({ data: getStream() }))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(text)
expect(r.status).to.equal(200)
})
it('sends custom response headers', async () => {
await registerStreamProtocol(protocolName, (request, callback) => callback({
data: getStream(3),
headers: {
'x-electron': ['a', 'b']
}
}))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.equal(text)
expect(r.status).to.equal(200)
expect(r.headers).to.include('x-electron: a, b')
})
it('sends custom status code', async () => {
await registerStreamProtocol(protocolName, (request, callback) => callback({
statusCode: 204,
data: null
}))
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.be.undefined('data')
expect(r.status).to.equal(204)
})
it('receives request headers', async () => {
await registerStreamProtocol(protocolName, (request, callback) => {
callback({
headers: {
'content-type': 'application/json'
},
data: getStream(5, JSON.stringify(Object.assign({}, request.headers)))
})
})
const r = await ajax(protocolName + '://fake-host', { headers: { 'x-return-headers': 'yes' } })
expect(r.data['x-return-headers']).to.equal('yes')
})
it('returns response multiple response headers with the same name', async () => {
await registerStreamProtocol(protocolName, (request, callback) => {
callback({
headers: {
'header1': ['value1', 'value2'],
'header2': 'value3'
},
data: getStream()
})
})
const r = await ajax(protocolName + '://fake-host')
// SUBTLE: when the response headers have multiple values it
// separates values by ", ". When the response headers are incorrectly
// converting an array to a string it separates values by ",".
expect(r.headers).to.equal('header1: value1, value2\r\nheader2: value3\r\n')
})
it('can handle large responses', async () => {
const data = Buffer.alloc(128 * 1024)
await registerStreamProtocol(protocolName, (request, callback) => {
callback(getStream(data.length, data))
})
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.have.lengthOf(data.length)
})
it('can handle a stream completing while writing', async () => {
function dumbPassthrough () {
return new stream.Transform({
async transform (chunk, encoding, cb) {
cb(null, chunk)
}
})
}
await registerStreamProtocol(protocolName, (request, callback) => {
callback({
statusCode: 200,
headers: { 'Content-Type': 'text/plain' },
data: getStream(1024 * 1024, Buffer.alloc(1024 * 1024 * 2)).pipe(dumbPassthrough())
})
})
const r = await ajax(protocolName + '://fake-host')
expect(r.data).to.have.lengthOf(1024 * 1024 * 2)
})
})
describe('protocol.isProtocolHandled', () => {
it('returns true for built-in protocols', async () => {
for (const p of ['about', 'file', 'http', 'https']) {
const handled = await protocol.isProtocolHandled(p)
expect(handled).to.be.true(`${p}: is handled`)
}
})
it('returns false when scheme is not registered', async () => {
const result = await protocol.isProtocolHandled('no-exist')
expect(result).to.be.false('no-exist: is handled')
})
it('returns true for custom protocol', async () => {
await registerStringProtocol(protocolName, (request, callback) => callback())
const result = await protocol.isProtocolHandled(protocolName)
expect(result).to.be.true('custom protocol is handled')
})
it('returns true for intercepted protocol', async () => {
await interceptStringProtocol('http', (request, callback) => callback())
const result = await protocol.isProtocolHandled('http')
expect(result).to.be.true('intercepted protocol is handled')
})
})
describe('protocol.intercept(Any)Protocol', () => {
it('throws error when scheme is already intercepted', (done) => {
protocol.interceptStringProtocol('http', (request, callback) => callback(), (error) => {
expect(error).to.be.null('error')
protocol.interceptBufferProtocol('http', (request, callback) => callback(), (error) => {
expect(error).to.not.be.null('error')
done()
})
})
})
it('does not crash when handler is called twice', async () => {
await interceptStringProtocol('http', (request, callback) => {
try {
callback(text)
callback()
} catch (error) {
// Ignore error
}
})
const r = await ajax('http://fake-host')
expect(r.data).to.be.equal(text)
})
it('sends error when callback is called with nothing', async () => {
await interceptStringProtocol('http', (request, callback) => callback())
await expect(ajax('http://fake-host')).to.be.eventually.rejectedWith(Error, '404')
})
})
describe('protocol.interceptStringProtocol', () => {
it('can intercept http protocol', async () => {
await interceptStringProtocol('http', (request, callback) => callback(text))
const r = await ajax('http://fake-host')
expect(r.data).to.equal(text)
})
it('can set content-type', async () => {
await interceptStringProtocol('http', (request, callback) => {
callback({
mimeType: 'application/json',
data: '{"value": 1}'
})
})
const r = await ajax('http://fake-host')
expect(r.data).to.be.an('object')
expect(r.data).to.have.property('value').that.is.equal(1)
})
it('can set content-type with charset', async () => {
await interceptStringProtocol('http', (request, callback) => {
callback({
mimeType: 'application/json; charset=UTF-8',
data: '{"value": 1}'
})
})
const r = await ajax('http://fake-host')
expect(r.data).to.be.an('object')
expect(r.data).to.have.property('value').that.is.equal(1)
})
it('can receive post data', async () => {
await interceptStringProtocol('http', (request, callback) => {
const uploadData = request.uploadData[0].bytes.toString()
callback({ data: uploadData })
})
const r = await ajax('http://fake-host', { type: 'POST', data: postData })
expect({ ...qs.parse(r.data) }).to.deep.equal(postData)
})
})
describe('protocol.interceptBufferProtocol', () => {
it('can intercept http protocol', async () => {
await interceptBufferProtocol('http', (request, callback) => callback(Buffer.from(text)))
const r = await ajax('http://fake-host')
expect(r.data).to.equal(text)
})
it('can receive post data', async () => {
await interceptBufferProtocol('http', (request, callback) => {
const uploadData = request.uploadData[0].bytes
callback(uploadData)
})
const r = await ajax('http://fake-host', { type: 'POST', data: postData })
expect(r.data).to.equal('name=post+test&type=string')
})
})
describe('protocol.interceptHttpProtocol', () => {
// FIXME(zcbenz): This test was passing because the test itself was wrong,
// I don't know whether it ever passed before and we should take a look at
// it in future.
xit('can send POST request', async () => {
const server = http.createServer((req, res) => {
let body = ''
req.on('data', (chunk) => {
body += chunk
})
req.on('end', () => {
res.end(body)
})
server.close()
})
after(() => server.close())
await server.listen(0, '127.0.0.1')
const port = (server.address() as AddressInfo).port
const url = `http://127.0.0.1:${port}`
await interceptHttpProtocol('http', (request, callback) => {
const data: Electron.RedirectRequest = {
url: url,
method: 'POST',
uploadData: {
contentType: 'application/x-www-form-urlencoded',
data: request.uploadData[0].bytes
},
session: null
}
callback(data)
})
const r = await ajax('http://fake-host', { type: 'POST', data: postData })
expect({ ...qs.parse(r.data) }).to.deep.equal(postData)
})
it.skip('can use custom session', async () => {
const customSession = session.fromPartition('custom-ses', { cache: false })
customSession.webRequest.onBeforeRequest((details, callback) => {
expect(details.url).to.equal('http://fake-host/')
callback({ cancel: true })
})
after(() => customSession.webRequest.onBeforeRequest(null))
await interceptHttpProtocol('http', (request, callback) => {
callback({
url: request.url,
session: customSession
})
})
await expect(ajax('http://fake-host')).to.be.eventually.rejectedWith(Error)
})
it('can access request headers', (done) => {
protocol.interceptHttpProtocol('http', (request) => {
expect(request).to.have.property('headers')
done()
}, () => {
ajax('http://fake-host')
})
})
})
describe('protocol.interceptStreamProtocol', () => {
it('can intercept http protocol', async () => {
await interceptStreamProtocol('http', (request, callback) => callback(getStream()))
const r = await ajax('http://fake-host')
expect(r.data).to.equal(text)
})
it('can receive post data', async () => {
await interceptStreamProtocol('http', (request, callback) => {
callback(getStream(3, request.uploadData[0].bytes.toString()))
})
const r = await ajax('http://fake-host', { type: 'POST', data: postData })
expect({ ...qs.parse(r.data) }).to.deep.equal(postData)
})
it('can execute redirects', async () => {
await interceptStreamProtocol('http', (request, callback) => {
if (request.url.indexOf('http://fake-host') === 0) {
setTimeout(() => {
callback({
data: null,
statusCode: 302,
headers: {
Location: 'http://fake-redirect'
}
})
}, 300)
} else {
expect(request.url.indexOf('http://fake-redirect')).to.equal(0)
callback(getStream(1, 'redirect'))
}
})
const r = await ajax('http://fake-host')
expect(r.data).to.equal('redirect')
})
})
describe('protocol.uninterceptProtocol', () => {
it('returns error when scheme does not exist', async () => {
await expect(uninterceptProtocol('not-exist')).to.be.eventually.rejectedWith(Error)
})
it('returns error when scheme is not intercepted', async () => {
await expect(uninterceptProtocol('http')).to.be.eventually.rejectedWith(Error)
})
})
describe.skip('protocol.registerSchemesAsPrivileged standard', () => {
const standardScheme = (global as any).standardScheme
const origin = `${standardScheme}://fake-host`
const imageURL = `${origin}/test.png`
const filePath = path.join(fixturesPath, 'pages', 'b.html')
const fileContent = '<img src="/test.png" />'
let w: BrowserWindow = null as unknown as BrowserWindow
beforeEach(() => {
w = new BrowserWindow({
show: false,
webPreferences: {
nodeIntegration: true
}
})
})
afterEach(async () => {
await closeWindow(w)
await unregisterProtocol(standardScheme)
w = null as unknown as BrowserWindow
})
it('resolves relative resources', async () => {
await registerFileProtocol(standardScheme, (request, callback) => {
if (request.url === imageURL) {
callback()
} else {
callback(filePath)
}
})
await w.loadURL(origin)
})
it('resolves absolute resources', async () => {
await registerStringProtocol(standardScheme, (request, callback) => {
if (request.url === imageURL) {
callback()
} else {
callback({
data: fileContent,
mimeType: 'text/html'
})
}
})
await w.loadURL(origin)
})
it('can have fetch working in it', async () => {
const requestReceived = defer()
const server = http.createServer((req, res) => {
res.end()
server.close()
requestReceived.resolve()
})
await new Promise(resolve => server.listen(0, '127.0.0.1', resolve))
const port = (server.address() as AddressInfo).port
const content = `<script>fetch("http://127.0.0.1:${port}")</script>`
await registerStringProtocol(standardScheme, (request, callback) => callback({ data: content, mimeType: 'text/html' }))
await w.loadURL(origin)
await requestReceived
})
it.skip('can access files through the FileSystem API', (done) => {
const filePath = path.join(fixturesPath, 'pages', 'filesystem.html')
protocol.registerFileProtocol(standardScheme, (request, callback) => callback({ path: filePath }), (error) => {
if (error) return done(error)
w.loadURL(origin)
})
ipcMain.once('file-system-error', (event, err) => done(err))
ipcMain.once('file-system-write-end', () => done())
})
it('registers secure, when {secure: true}', (done) => {
const filePath = path.join(fixturesPath, 'pages', 'cache-storage.html')
ipcMain.once('success', () => done())
ipcMain.once('failure', (event, err) => done(err))
protocol.registerFileProtocol(standardScheme, (request, callback) => callback({ path: filePath }), (error) => {
if (error) return done(error)
w.loadURL(origin)
})
})
})
describe.skip('protocol.registerSchemesAsPrivileged cors-fetch', function () {
const standardScheme = (global as any).standardScheme
let w: BrowserWindow = null as unknown as BrowserWindow
beforeEach(async () => {
w = new BrowserWindow({show: false})
})
afterEach(async () => {
await closeWindow(w)
w = null as unknown as BrowserWindow
await Promise.all(
[standardScheme, 'cors', 'no-cors', 'no-fetch'].map(scheme =>
new Promise(resolve => protocol.unregisterProtocol(scheme, (/* ignore error */) => resolve()))
)
)
})
it('supports fetch api by default', async () => {
const url = `file://${fixturesPath}/assets/logo.png`
await w.loadURL(`file://${fixturesPath}/pages/blank.html`)
const ok = await w.webContents.executeJavaScript(`fetch(${JSON.stringify(url)}).then(r => r.ok)`)
expect(ok).to.be.true('response ok')
})
it('allows CORS requests by default', async () => {
await allowsCORSRequests('cors', 200, new RegExp(''), () => {
const {ipcRenderer} = require('electron')
fetch('cors://myhost').then(function (response) {
ipcRenderer.send('response', response.status)
}).catch(function (response) {
ipcRenderer.send('response', 'failed')
})
})
})
it('disallows CORS and fetch requests when only supportFetchAPI is specified', async () => {
await allowsCORSRequests('no-cors', ['failed xhr', 'failed fetch'], /has been blocked by CORS policy/, () => {
const {ipcRenderer} = require('electron')
Promise.all([
new Promise(resolve => {
const req = new XMLHttpRequest()
req.onload = () => resolve('loaded xhr')
req.onerror = () => resolve('failed xhr')
req.open('GET', 'no-cors://myhost')
req.send()
}),
fetch('no-cors://myhost')
.then(() => 'loaded fetch')
.catch(() => 'failed fetch')
]).then(([xhr, fetch]) => {
ipcRenderer.send('response', [xhr, fetch])
})
})
})
it('allows CORS, but disallows fetch requests, when specified', async () => {
await allowsCORSRequests('no-fetch', ['loaded xhr', 'failed fetch'], /Fetch API cannot load/, () => {
const {ipcRenderer} = require('electron')
Promise.all([
new Promise(resolve => {
const req = new XMLHttpRequest()
req.onload = () => resolve('loaded xhr')
req.onerror = () => resolve('failed xhr')
req.open('GET', 'no-fetch://myhost')
req.send()
}),
fetch('no-fetch://myhost')
.then(() => 'loaded fetch')
.catch(() => 'failed fetch')
]).then(([xhr, fetch]) => {
ipcRenderer.send('response', [xhr, fetch])
})
})
})
async function allowsCORSRequests (corsScheme: string, expected: any, expectedConsole: RegExp, content: Function) {
await registerStringProtocol(standardScheme, (request, callback) => {
callback({ data: `<script>(${content})()</script>`, mimeType: 'text/html' })
})
await registerStringProtocol(corsScheme, (request, callback) => {
callback('')
})
const newContents: WebContents = (webContents as any).create({ nodeIntegration: true })
const consoleMessages: string[] = []
newContents.on('console-message', (e, level, message, line, sourceId) => consoleMessages.push(message))
try {
newContents.loadURL(standardScheme + '://fake-host')
const [, response] = await emittedOnce(ipcMain, 'response')
expect(response).to.deep.equal(expected)
expect(consoleMessages.join('\n')).to.match(expectedConsole)
} finally {
// This is called in a timeout to avoid a crash that happens when
// calling destroy() in a microtask.
setTimeout(() => {
(newContents as any).destroy()
})
}
}
})
})