electron/spec/api-web-contents-spec.js

803 lines
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JavaScript
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'use strict'
const assert = require('assert')
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const http = require('http')
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const path = require('path')
const {closeWindow} = require('./window-helpers')
const {emittedOnce} = require('./events-helpers')
const chai = require('chai')
const dirtyChai = require('dirty-chai')
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const {ipcRenderer, remote} = require('electron')
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const {BrowserWindow, webContents, ipcMain, session} = remote
const {expect} = chai
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const isCi = remote.getGlobal('isCi')
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chai.use(dirtyChai)
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/* The whole webContents API doesn't use standard callbacks */
/* eslint-disable standard/no-callback-literal */
describe('webContents module', () => {
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const fixtures = path.resolve(__dirname, 'fixtures')
let w
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beforeEach(() => {
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w = new BrowserWindow({
show: false,
width: 400,
height: 400,
webPreferences: {
backgroundThrottling: false
}
})
})
afterEach(() => closeWindow(w).then(() => { w = null }))
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describe('getAllWebContents() API', () => {
it('returns an array of web contents', (done) => {
w.webContents.on('devtools-opened', () => {
const all = webContents.getAllWebContents().sort((a, b) => {
return a.id - b.id
})
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assert.ok(all.length >= 4)
assert.equal(all[0].getType(), 'window')
assert.equal(all[all.length - 2].getType(), 'remote')
assert.equal(all[all.length - 1].getType(), 'webview')
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done()
})
w.loadFile(path.join(fixtures, 'pages', 'webview-zoom-factor.html'))
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w.webContents.openDevTools()
})
})
describe('getFocusedWebContents() API', () => {
it('returns the focused web contents', (done) => {
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if (isCi) return done()
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const specWebContents = remote.getCurrentWebContents()
assert.equal(specWebContents.id, webContents.getFocusedWebContents().id)
specWebContents.once('devtools-opened', () => {
assert.equal(specWebContents.devToolsWebContents.id, webContents.getFocusedWebContents().id)
specWebContents.closeDevTools()
})
specWebContents.once('devtools-closed', () => {
assert.equal(specWebContents.id, webContents.getFocusedWebContents().id)
done()
})
specWebContents.openDevTools()
})
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it('does not crash when called on a detached dev tools window', (done) => {
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const specWebContents = w.webContents
specWebContents.once('devtools-opened', () => {
assert.doesNotThrow(() => {
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webContents.getFocusedWebContents()
})
specWebContents.closeDevTools()
})
specWebContents.once('devtools-closed', () => {
assert.doesNotThrow(() => {
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webContents.getFocusedWebContents()
})
done()
})
specWebContents.openDevTools({mode: 'detach'})
w.inspectElement(100, 100)
})
})
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describe('setDevToolsWebContents() API', () => {
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it('sets arbitry webContents as devtools', (done) => {
let devtools = new BrowserWindow({show: false})
devtools.webContents.once('dom-ready', () => {
assert.ok(devtools.getURL().startsWith('chrome-devtools://devtools'))
devtools.webContents.executeJavaScript('InspectorFrontendHost.constructor.name', (name) => {
assert.ok(name, 'InspectorFrontendHostImpl')
devtools.destroy()
done()
})
})
w.webContents.setDevToolsWebContents(devtools.webContents)
w.webContents.openDevTools()
})
})
describe('isFocused() API', () => {
it('returns false when the window is hidden', () => {
BrowserWindow.getAllWindows().forEach((window) => {
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assert.equal(!window.isVisible() && window.webContents.isFocused(), false)
})
})
})
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describe('isCurrentlyAudible() API', () => {
it('returns whether audio is playing', async () => {
const webContents = remote.getCurrentWebContents()
const context = new window.AudioContext()
// Start in suspended state, because of the
// new web audio api policy.
context.suspend()
const oscillator = context.createOscillator()
oscillator.connect(context.destination)
oscillator.start()
await context.resume()
const [, audible] = await emittedOnce(webContents, '-audio-state-changed')
assert(webContents.isCurrentlyAudible() === audible)
expect(webContents.isCurrentlyAudible()).to.be.true()
oscillator.stop()
await emittedOnce(webContents, '-audio-state-changed')
expect(webContents.isCurrentlyAudible()).to.be.false()
oscillator.disconnect()
context.close()
})
})
describe('getWebPreferences() API', () => {
it('should not crash when called for devTools webContents', (done) => {
w.webContents.openDevTools()
w.webContents.once('devtools-opened', () => {
assert(!w.devToolsWebContents.getWebPreferences())
done()
})
})
})
describe('before-input-event event', () => {
it('can prevent document keyboard events', (done) => {
w.loadFile(path.join(fixtures, 'pages', 'key-events.html'))
w.webContents.once('did-finish-load', () => {
ipcMain.once('keydown', (event, key) => {
assert.equal(key, 'b')
done()
})
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ipcRenderer.send('prevent-next-input-event', 'a', w.webContents.id)
w.webContents.sendInputEvent({type: 'keyDown', keyCode: 'a'})
w.webContents.sendInputEvent({type: 'keyDown', keyCode: 'b'})
})
})
it('has the correct properties', (done) => {
w.loadFile(path.join(fixtures, 'pages', 'base-page.html'))
w.webContents.once('did-finish-load', () => {
const testBeforeInput = (opts) => {
return new Promise((resolve, reject) => {
w.webContents.once('before-input-event', (event, input) => {
assert.equal(input.type, opts.type)
assert.equal(input.key, opts.key)
assert.equal(input.code, opts.code)
assert.equal(input.isAutoRepeat, opts.isAutoRepeat)
assert.equal(input.shift, opts.shift)
assert.equal(input.control, opts.control)
assert.equal(input.alt, opts.alt)
assert.equal(input.meta, opts.meta)
resolve()
})
const modifiers = []
if (opts.shift) modifiers.push('shift')
if (opts.control) modifiers.push('control')
if (opts.alt) modifiers.push('alt')
if (opts.meta) modifiers.push('meta')
if (opts.isAutoRepeat) modifiers.push('isAutoRepeat')
w.webContents.sendInputEvent({
type: opts.type,
keyCode: opts.keyCode,
modifiers: modifiers
})
})
}
Promise.resolve().then(() => {
return testBeforeInput({
type: 'keyDown',
key: 'A',
code: 'KeyA',
keyCode: 'a',
shift: true,
control: true,
alt: true,
meta: true,
isAutoRepeat: true
})
}).then(() => {
return testBeforeInput({
type: 'keyUp',
key: '.',
code: 'Period',
keyCode: '.',
shift: false,
control: true,
alt: true,
meta: false,
isAutoRepeat: false
})
}).then(() => {
return testBeforeInput({
type: 'keyUp',
key: '!',
code: 'Digit1',
keyCode: '1',
shift: true,
control: false,
alt: false,
meta: true,
isAutoRepeat: false
})
}).then(() => {
return testBeforeInput({
type: 'keyUp',
key: 'Tab',
code: 'Tab',
keyCode: 'Tab',
shift: false,
control: true,
alt: false,
meta: false,
isAutoRepeat: true
})
}).then(done).catch(done)
})
})
})
describe('sendInputEvent(event)', () => {
beforeEach((done) => {
w.loadFile(path.join(fixtures, 'pages', 'key-events.html'))
w.webContents.once('did-finish-load', () => done())
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})
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it('can send keydown events', (done) => {
ipcMain.once('keydown', (event, key, code, keyCode, shiftKey, ctrlKey, altKey) => {
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assert.equal(key, 'a')
assert.equal(code, 'KeyA')
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assert.equal(keyCode, 65)
assert.equal(shiftKey, false)
assert.equal(ctrlKey, false)
assert.equal(altKey, false)
done()
})
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w.webContents.sendInputEvent({type: 'keyDown', keyCode: 'A'})
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})
it('can send keydown events with modifiers', (done) => {
ipcMain.once('keydown', (event, key, code, keyCode, shiftKey, ctrlKey, altKey) => {
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assert.equal(key, 'Z')
assert.equal(code, 'KeyZ')
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assert.equal(keyCode, 90)
assert.equal(shiftKey, true)
assert.equal(ctrlKey, true)
assert.equal(altKey, false)
done()
})
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w.webContents.sendInputEvent({type: 'keyDown', keyCode: 'Z', modifiers: ['shift', 'ctrl']})
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})
it('can send keydown events with special keys', (done) => {
ipcMain.once('keydown', (event, key, code, keyCode, shiftKey, ctrlKey, altKey) => {
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assert.equal(key, 'Tab')
assert.equal(code, 'Tab')
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assert.equal(keyCode, 9)
assert.equal(shiftKey, false)
assert.equal(ctrlKey, false)
assert.equal(altKey, true)
done()
})
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w.webContents.sendInputEvent({type: 'keyDown', keyCode: 'Tab', modifiers: ['alt']})
})
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it('can send char events', (done) => {
ipcMain.once('keypress', (event, key, code, keyCode, shiftKey, ctrlKey, altKey) => {
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assert.equal(key, 'a')
assert.equal(code, 'KeyA')
assert.equal(keyCode, 65)
assert.equal(shiftKey, false)
assert.equal(ctrlKey, false)
assert.equal(altKey, false)
done()
})
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w.webContents.sendInputEvent({type: 'keyDown', keyCode: 'A'})
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w.webContents.sendInputEvent({type: 'char', keyCode: 'A'})
})
it('can send char events with modifiers', (done) => {
ipcMain.once('keypress', (event, key, code, keyCode, shiftKey, ctrlKey, altKey) => {
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assert.equal(key, 'Z')
assert.equal(code, 'KeyZ')
assert.equal(keyCode, 90)
assert.equal(shiftKey, true)
assert.equal(ctrlKey, true)
assert.equal(altKey, false)
done()
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})
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w.webContents.sendInputEvent({type: 'keyDown', keyCode: 'Z'})
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w.webContents.sendInputEvent({type: 'char', keyCode: 'Z', modifiers: ['shift', 'ctrl']})
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})
})
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it('supports inserting CSS', (done) => {
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w.loadURL('about:blank')
w.webContents.insertCSS('body { background-repeat: round; }')
w.webContents.executeJavaScript('window.getComputedStyle(document.body).getPropertyValue("background-repeat")', (result) => {
assert.equal(result, 'round')
done()
})
})
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it('supports inspecting an element in the devtools', (done) => {
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w.loadURL('about:blank')
w.webContents.once('devtools-opened', () => {
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done()
})
w.webContents.inspectElement(10, 10)
})
describe('startDrag({file, icon})', () => {
it('throws errors for a missing file or a missing/empty icon', () => {
assert.throws(() => {
w.webContents.startDrag({icon: path.join(fixtures, 'assets', 'logo.png')})
}, /Must specify either 'file' or 'files' option/)
assert.throws(() => {
w.webContents.startDrag({file: __filename})
}, /Must specify 'icon' option/)
if (process.platform === 'darwin') {
assert.throws(() => {
w.webContents.startDrag({file: __filename, icon: __filename})
}, /Must specify non-empty 'icon' option/)
}
})
})
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describe('focus()', () => {
describe('when the web contents is hidden', () => {
it('does not blur the focused window', (done) => {
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ipcMain.once('answer', (event, parentFocused, childFocused) => {
assert.equal(parentFocused, true)
assert.equal(childFocused, false)
done()
})
w.show()
w.loadFile(path.join(fixtures, 'pages', 'focus-web-contents.html'))
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})
})
})
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describe('getOSProcessId()', () => {
it('returns a valid procress id', (done) => {
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assert.strictEqual(w.webContents.getOSProcessId(), 0)
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w.webContents.once('did-finish-load', () => {
const pid = w.webContents.getOSProcessId()
assert.equal(typeof pid, 'number')
assert(pid > 0, `pid ${pid} is not greater than 0`)
done()
})
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w.loadURL('about:blank')
})
})
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describe('zoom api', () => {
const zoomScheme = remote.getGlobal('zoomScheme')
const hostZoomMap = {
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host1: 0.3,
host2: 0.7,
host3: 0.2
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}
before((done) => {
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const protocol = session.defaultSession.protocol
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protocol.registerStringProtocol(zoomScheme, (request, callback) => {
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const response = `<script>
const {ipcRenderer, remote} = require('electron')
ipcRenderer.send('set-zoom', window.location.hostname)
ipcRenderer.on(window.location.hostname + '-zoom-set', () => {
remote.getCurrentWebContents().getZoomLevel((zoomLevel) => {
ipcRenderer.send(window.location.hostname + '-zoom-level', zoomLevel)
})
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})
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</script>`
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callback({data: response, mimeType: 'text/html'})
}, (error) => done(error))
})
after((done) => {
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const protocol = session.defaultSession.protocol
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protocol.unregisterProtocol(zoomScheme, (error) => done(error))
})
it('can set the correct zoom level', (done) => {
w.loadURL('about:blank')
w.webContents.on('did-finish-load', () => {
w.webContents.getZoomLevel((zoomLevel) => {
assert.equal(zoomLevel, 0.0)
w.webContents.setZoomLevel(0.5)
w.webContents.getZoomLevel((zoomLevel) => {
assert.equal(zoomLevel, 0.5)
w.webContents.setZoomLevel(0)
done()
})
})
})
})
it('can persist zoom level across navigation', (done) => {
let finalNavigation = false
ipcMain.on('set-zoom', (e, host) => {
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const zoomLevel = hostZoomMap[host]
if (!finalNavigation) w.webContents.setZoomLevel(zoomLevel)
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e.sender.send(`${host}-zoom-set`)
})
ipcMain.on('host1-zoom-level', (e, zoomLevel) => {
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const expectedZoomLevel = hostZoomMap.host1
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assert.equal(zoomLevel, expectedZoomLevel)
if (finalNavigation) {
done()
} else {
w.loadURL(`${zoomScheme}://host2`)
}
})
ipcMain.once('host2-zoom-level', (e, zoomLevel) => {
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const expectedZoomLevel = hostZoomMap.host2
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assert.equal(zoomLevel, expectedZoomLevel)
finalNavigation = true
w.webContents.goBack()
})
w.loadURL(`${zoomScheme}://host1`)
})
it('can propagate zoom level across same session', (done) => {
const w2 = new BrowserWindow({
show: false
})
w2.webContents.on('did-finish-load', () => {
w.webContents.getZoomLevel((zoomLevel1) => {
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assert.equal(zoomLevel1, hostZoomMap.host3)
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w2.webContents.getZoomLevel((zoomLevel2) => {
assert.equal(zoomLevel1, zoomLevel2)
w2.setClosable(true)
w2.close()
done()
})
})
})
w.webContents.on('did-finish-load', () => {
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w.webContents.setZoomLevel(hostZoomMap.host3)
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w2.loadURL(`${zoomScheme}://host3`)
})
w.loadURL(`${zoomScheme}://host3`)
})
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it('cannot propagate zoom level across different session', (done) => {
const w2 = new BrowserWindow({
show: false,
webPreferences: {
partition: 'temp'
}
})
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const protocol = w2.webContents.session.protocol
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protocol.registerStringProtocol(zoomScheme, (request, callback) => {
callback('hello')
}, (error) => {
if (error) return done(error)
w2.webContents.on('did-finish-load', () => {
w.webContents.getZoomLevel((zoomLevel1) => {
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assert.equal(zoomLevel1, hostZoomMap.host3)
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w2.webContents.getZoomLevel((zoomLevel2) => {
assert.equal(zoomLevel2, 0)
assert.notEqual(zoomLevel1, zoomLevel2)
protocol.unregisterProtocol(zoomScheme, (error) => {
if (error) return done(error)
w2.setClosable(true)
w2.close()
done()
})
})
})
})
w.webContents.on('did-finish-load', () => {
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w.webContents.setZoomLevel(hostZoomMap.host3)
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w2.loadURL(`${zoomScheme}://host3`)
})
w.loadURL(`${zoomScheme}://host3`)
})
})
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it('can persist when it contains iframe', (done) => {
const server = http.createServer((req, res) => {
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setTimeout(() => {
res.end()
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}, 200)
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})
server.listen(0, '127.0.0.1', () => {
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const url = 'http://127.0.0.1:' + server.address().port
const content = `<iframe src=${url}></iframe>`
w.webContents.on('did-frame-finish-load', (e, isMainFrame) => {
if (!isMainFrame) {
w.webContents.getZoomLevel((zoomLevel) => {
assert.equal(zoomLevel, 2.0)
w.webContents.setZoomLevel(0)
server.close()
done()
})
}
})
w.webContents.on('dom-ready', () => {
w.webContents.setZoomLevel(2.0)
})
w.loadURL(`data:text/html,${content}`)
})
})
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it('cannot propagate when used with webframe', (done) => {
let finalZoomLevel = 0
const w2 = new BrowserWindow({
show: false
})
w2.webContents.on('did-finish-load', () => {
w.webContents.getZoomLevel((zoomLevel1) => {
assert.equal(zoomLevel1, finalZoomLevel)
w2.webContents.getZoomLevel((zoomLevel2) => {
assert.equal(zoomLevel2, 0)
assert.notEqual(zoomLevel1, zoomLevel2)
w2.setClosable(true)
w2.close()
done()
})
})
})
ipcMain.once('temporary-zoom-set', (e, zoomLevel) => {
w2.loadFile(path.join(fixtures, 'pages', 'c.html'))
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finalZoomLevel = zoomLevel
})
w.loadFile(path.join(fixtures, 'pages', 'webframe-zoom.html'))
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})
it('cannot persist zoom level after navigation with webFrame', (done) => {
let initialNavigation = true
const source = `
const {ipcRenderer, webFrame} = require('electron')
webFrame.setZoomLevel(0.6)
ipcRenderer.send('zoom-level-set', webFrame.getZoomLevel())
`
w.webContents.on('did-finish-load', () => {
if (initialNavigation) {
w.webContents.executeJavaScript(source, () => {})
} else {
w.webContents.getZoomLevel((zoomLevel) => {
assert.equal(zoomLevel, 0)
done()
})
}
})
ipcMain.once('zoom-level-set', (e, zoomLevel) => {
assert.equal(zoomLevel, 0.6)
w.loadFile(path.join(fixtures, 'pages', 'd.html'))
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initialNavigation = false
})
w.loadFile(path.join(fixtures, 'pages', 'c.html'))
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})
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})
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describe('webrtc ip policy api', () => {
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it('can set and get webrtc ip policies', () => {
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const policies = [
'default',
'default_public_interface_only',
'default_public_and_private_interfaces',
'disable_non_proxied_udp'
]
policies.forEach((policy) => {
w.webContents.setWebRTCIPHandlingPolicy(policy)
assert.equal(w.webContents.getWebRTCIPHandlingPolicy(), policy)
})
})
})
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describe('will-prevent-unload event', () => {
it('does not emit if beforeunload returns undefined', (done) => {
w.once('closed', () => {
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done()
})
w.webContents.on('will-prevent-unload', (e) => {
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assert.fail('should not have fired')
})
w.loadFile(path.join(fixtures, 'api', 'close-beforeunload-undefined.html'))
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})
it('emits if beforeunload returns false', (done) => {
w.webContents.on('will-prevent-unload', () => {
done()
})
w.loadFile(path.join(fixtures, 'api', 'close-beforeunload-false.html'))
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})
it('supports calling preventDefault on will-prevent-unload events', (done) => {
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ipcRenderer.send('prevent-next-will-prevent-unload', w.webContents.id)
w.once('closed', () => done())
w.loadFile(path.join(fixtures, 'api', 'close-beforeunload-false.html'))
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})
})
describe('setIgnoreMenuShortcuts(ignore)', () => {
it('does not throw', () => {
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assert.equal(w.webContents.setIgnoreMenuShortcuts(true), undefined)
assert.equal(w.webContents.setIgnoreMenuShortcuts(false), undefined)
})
})
// Destroying webContents in its event listener is going to crash when
// Electron is built in Debug mode.
xdescribe('destroy()', () => {
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let server
before((done) => {
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server = http.createServer((request, response) => {
switch (request.url) {
case '/404':
response.statusCode = '404'
response.end()
break
case '/301':
response.statusCode = '301'
response.setHeader('Location', '/200')
response.end()
break
case '/200':
response.statusCode = '200'
response.end('hello')
break
default:
done('unsupported endpoint')
}
}).listen(0, '127.0.0.1', () => {
server.url = 'http://127.0.0.1:' + server.address().port
done()
})
})
after(() => {
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server.close()
server = null
})
it('should not crash when invoked synchronously inside navigation observer', (done) => {
const events = [
{ name: 'did-start-loading', url: `${server.url}/200` },
{ name: 'dom-ready', url: `${server.url}/200` },
{ name: 'did-stop-loading', url: `${server.url}/200` },
{ name: 'did-finish-load', url: `${server.url}/200` },
// FIXME: Multiple Emit calls inside an observer assume that object
// will be alive till end of the observer. Synchronous `destroy` api
// violates this contract and crashes.
// { name: 'did-frame-finish-load', url: `${server.url}/200` },
{ name: 'did-fail-load', url: `${server.url}/404` }
]
const responseEvent = 'webcontents-destroyed'
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function * genNavigationEvent () {
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let eventOptions = null
while ((eventOptions = events.shift()) && events.length) {
eventOptions.responseEvent = responseEvent
ipcRenderer.send('test-webcontents-navigation-observer', eventOptions)
yield 1
}
}
let gen = genNavigationEvent()
ipcRenderer.on(responseEvent, () => {
if (!gen.next().value) done()
})
gen.next()
})
})
describe('did-change-theme-color event', () => {
it('is triggered with correct theme color', (done) => {
let count = 0
w.webContents.on('did-change-theme-color', (e, color) => {
if (count === 0) {
count += 1
assert.equal(color, '#FFEEDD')
w.loadFile(path.join(fixtures, 'pages', 'base-page.html'))
} else if (count === 1) {
assert.equal(color, null)
done()
}
})
w.loadFile(path.join(fixtures, 'pages', 'theme-color.html'))
})
})
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describe('console-message event', () => {
it('is triggered with correct log message', (done) => {
w.webContents.on('console-message', (e, level, message) => {
// Don't just assert as Chromium might emit other logs that we should ignore.
if (message === 'a') {
done()
}
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})
w.loadFile(path.join(fixtures, 'pages', 'a.html'))
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})
})
describe('referrer', () => {
it('propagates referrer information to new target=_blank windows', (done) => {
const server = http.createServer((req, res) => {
if (req.url === '/should_have_referrer') {
assert.equal(req.headers.referer, 'http://127.0.0.1:' + server.address().port + '/')
return done()
}
res.end('<a id="a" href="/should_have_referrer" target="_blank">link</a>')
})
server.listen(0, '127.0.0.1', () => {
const url = 'http://127.0.0.1:' + server.address().port + '/'
w.webContents.once('did-finish-load', () => {
w.webContents.once('new-window', (event, newUrl, frameName, disposition, options, features, referrer) => {
assert.equal(referrer.url, url)
assert.equal(referrer.policy, 'no-referrer-when-downgrade')
})
w.webContents.executeJavaScript('a.click()')
})
w.loadURL(url)
})
})
// TODO(jeremy): window.open() in a real browser passes the referrer, but
// our hacked-up window.open() shim doesn't. It should.
xit('propagates referrer information to windows opened with window.open', (done) => {
const server = http.createServer((req, res) => {
if (req.url === '/should_have_referrer') {
assert.equal(req.headers.referer, 'http://127.0.0.1:' + server.address().port + '/')
return done()
}
res.end('')
})
server.listen(0, '127.0.0.1', () => {
const url = 'http://127.0.0.1:' + server.address().port + '/'
w.webContents.once('did-finish-load', () => {
w.webContents.once('new-window', (event, newUrl, frameName, disposition, options, features, referrer) => {
assert.equal(referrer.url, url)
assert.equal(referrer.policy, 'no-referrer-when-downgrade')
})
w.webContents.executeJavaScript('window.open(location.href + "should_have_referrer")')
})
w.loadURL(url)
})
})
})
describe('webframe messages in sandboxed contents', () => {
it('responds to executeJavaScript', (done) => {
w.destroy()
w = new BrowserWindow({
show: false,
webPreferences: {
sandbox: true
}
})
w.webContents.once('did-finish-load', () => {
w.webContents.executeJavaScript('37 + 5', (result) => {
assert.equal(result, 42)
done()
})
})
w.loadURL('about:blank')
})
})
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})