electron/spec-main/visibility-state-spec.ts

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import { expect } from 'chai'
import * as cp from 'child_process';
import { BrowserWindow, BrowserWindowConstructorOptions, ipcMain } from 'electron'
import * as path from 'path'
import { emittedOnce } from './events-helpers'
import { closeWindow } from './window-helpers';
import { ifdescribe } from './spec-helpers';
// visibilityState specs pass on linux with a real window manager but on CI
// the environment does not let these specs pass
ifdescribe(process.platform !== 'linux' || !isCI)('document.visibilityState', () => {
let w: BrowserWindow
afterEach(() => {
return closeWindow(w)
})
const load = () => w.loadFile(path.resolve(__dirname, 'fixtures', 'chromium', 'visibilitystate.html'))
const itWithOptions = (name: string, options: BrowserWindowConstructorOptions, fn: Mocha.Func) => {
return it(name, async function (...args) {
w = new BrowserWindow({
...options,
paintWhenInitiallyHidden: false,
webPreferences: {
...(options.webPreferences || {}),
nodeIntegration: true
}
})
await Promise.resolve(fn.apply(this, args))
})
}
const getVisibilityState = async (): Promise<string> => {
const response = emittedOnce(ipcMain, 'visibility-state')
w.webContents.send('get-visibility-state')
return (await response)[1]
}
itWithOptions('should be visible when the window is initially shown by default', {}, async () => {
await load()
const state = await getVisibilityState()
expect(state).to.equal('visible')
})
itWithOptions('should be visible when the window is initially shown', {
show: true,
}, async () => {
await load()
const state = await getVisibilityState()
expect(state).to.equal('visible')
})
itWithOptions('should be hidden when the window is initially hidden', {
show: false,
}, async () => {
await load()
const state = await getVisibilityState()
expect(state).to.equal('hidden')
})
itWithOptions('should be visible when the window is initially hidden but shown before the page is loaded', {
show: false,
}, async () => {
w.show()
await load()
const state = await getVisibilityState()
expect(state).to.equal('visible')
})
itWithOptions('should be hidden when the window is initially shown but hidden before the page is loaded', {
show: true,
}, async () => {
// TODO(MarshallOfSound): Figure out if we can work around this 1 tick issue for users
if (process.platform === 'darwin') {
// Wait for a tick, the window being "shown" takes 1 tick on macOS
await new Promise(r => setTimeout(r, 0))
}
w.hide()
await load()
const state = await getVisibilityState()
expect(state).to.equal('hidden')
})
itWithOptions('should be toggle between visible and hidden as the window is hidden and shown', {}, async () => {
await load()
expect(await getVisibilityState()).to.equal('visible')
await emittedOnce(ipcMain, 'visibility-change', () => w.hide())
expect(await getVisibilityState()).to.equal('hidden')
await emittedOnce(ipcMain, 'visibility-change', () => w.show())
expect(await getVisibilityState()).to.equal('visible')
})
itWithOptions('should become hidden when a window is minimized', {}, async () => {
await load()
expect(await getVisibilityState()).to.equal('visible')
await emittedOnce(ipcMain, 'visibility-change', () => w.minimize())
expect(await getVisibilityState()).to.equal('hidden')
})
itWithOptions('should become visible when a window is restored', {}, async () => {
await load()
expect(await getVisibilityState()).to.equal('visible')
await emittedOnce(ipcMain, 'visibility-change', () => w.minimize())
await emittedOnce(ipcMain, 'visibility-change', () => w.restore())
expect(await getVisibilityState()).to.equal('visible')
})
describe('on platforms that support occlusion detection', () => {
let child: cp.ChildProcess
before(function() {
if (process.platform !== 'darwin') this.skip()
})
const makeOtherWindow = (opts: { x: number; y: number; width: number; height: number; }) => {
child = cp.spawn(process.execPath, [path.resolve(__dirname, 'fixtures', 'chromium', 'other-window.js'), `${opts.x}`, `${opts.y}`, `${opts.width}`, `${opts.height}`])
return new Promise(resolve => {
child.stdout!.on('data', (chunk) => {
if (chunk.toString().includes('__ready__')) resolve()
})
})
}
afterEach(() => {
if (child && !child.killed) {
child.kill('SIGTERM')
}
})
itWithOptions('should be visible when two windows are on screen', {
x: 0,
y: 0,
width: 200,
height: 200,
}, async () => {
await makeOtherWindow({
x: 200,
y: 0,
width: 200,
height: 200,
})
await load()
const state = await getVisibilityState()
expect(state).to.equal('visible')
})
itWithOptions('should be visible when two windows are on screen that overlap partially', {
x: 50,
y: 50,
width: 150,
height: 150,
}, async () => {
await makeOtherWindow({
x: 100,
y: 0,
width: 200,
height: 200,
})
await load()
const state = await getVisibilityState()
expect(state).to.equal('visible')
})
itWithOptions('should be hidden when a second window completely conceals the current window', {
x: 50,
y: 50,
width: 50,
height: 50,
}, async function () {
this.timeout(240000)
await load()
await emittedOnce(ipcMain, 'visibility-change', async () => {
await makeOtherWindow({
x: 0,
y: 0,
width: 300,
height: 300,
})
})
const state = await getVisibilityState()
expect(state).to.equal('hidden')
})
})
})