electron/spec/api-browser-view-spec.ts

405 lines
12 KiB
TypeScript

import { expect } from 'chai';
import * as path from 'path';
import { BrowserView, BrowserWindow, screen, webContents } from 'electron/main';
import { closeWindow } from './lib/window-helpers';
import { defer, ifit, startRemoteControlApp } from './lib/spec-helpers';
import { areColorsSimilar, captureScreen, getPixelColor } from './lib/screen-helpers';
import { once } from 'events';
describe('BrowserView module', () => {
const fixtures = path.resolve(__dirname, 'fixtures');
let w: BrowserWindow;
let view: BrowserView;
beforeEach(() => {
expect(webContents.getAllWebContents()).to.have.length(0);
w = new BrowserWindow({
show: false,
width: 400,
height: 400,
webPreferences: {
backgroundThrottling: false
}
});
});
afterEach(async () => {
const p = once(w.webContents, 'destroyed');
await closeWindow(w);
w = null as any;
await p;
if (view && view.webContents) {
const p = once(view.webContents, 'destroyed');
view.webContents.destroy();
view = null as any;
await p;
}
expect(webContents.getAllWebContents()).to.have.length(0);
});
it('can be created with an existing webContents', async () => {
const wc = (webContents as typeof ElectronInternal.WebContents).create({ sandbox: true });
await wc.loadURL('about:blank');
view = new BrowserView({ webContents: wc } as any);
expect(view.webContents.getURL()).to.equal('about:blank');
});
describe('BrowserView.setBackgroundColor()', () => {
it('does not throw for valid args', () => {
view = new BrowserView();
view.setBackgroundColor('#000');
});
it('throws for invalid args', () => {
view = new BrowserView();
expect(() => {
view.setBackgroundColor(null as any);
}).to.throw(/conversion failure/);
});
// Linux and arm64 platforms (WOA and macOS) do not return any capture sources
ifit(process.platform === 'darwin' && process.arch === 'x64')('sets the background color to transparent if none is set', async () => {
const display = screen.getPrimaryDisplay();
const WINDOW_BACKGROUND_COLOR = '#55ccbb';
w.show();
w.setBounds(display.bounds);
w.setBackgroundColor(WINDOW_BACKGROUND_COLOR);
await w.loadURL('about:blank');
view = new BrowserView();
view.setBounds(display.bounds);
w.setBrowserView(view);
await view.webContents.loadURL('data:text/html,hello there');
const screenCapture = await captureScreen();
const centerColor = getPixelColor(screenCapture, {
x: display.size.width / 2,
y: display.size.height / 2
});
expect(areColorsSimilar(centerColor, WINDOW_BACKGROUND_COLOR)).to.be.true();
});
// Linux and arm64 platforms (WOA and macOS) do not return any capture sources
ifit(process.platform === 'darwin' && process.arch === 'x64')('successfully applies the background color', async () => {
const WINDOW_BACKGROUND_COLOR = '#55ccbb';
const VIEW_BACKGROUND_COLOR = '#ff00ff';
const display = screen.getPrimaryDisplay();
w.show();
w.setBounds(display.bounds);
w.setBackgroundColor(WINDOW_BACKGROUND_COLOR);
await w.loadURL('about:blank');
view = new BrowserView();
view.setBounds(display.bounds);
w.setBrowserView(view);
w.setBackgroundColor(VIEW_BACKGROUND_COLOR);
await view.webContents.loadURL('data:text/html,hello there');
const screenCapture = await captureScreen();
const centerColor = getPixelColor(screenCapture, {
x: display.size.width / 2,
y: display.size.height / 2
});
expect(areColorsSimilar(centerColor, VIEW_BACKGROUND_COLOR)).to.be.true();
});
});
describe('BrowserView.setAutoResize()', () => {
it('does not throw for valid args', () => {
view = new BrowserView();
view.setAutoResize({});
view.setAutoResize({ width: true, height: false });
});
it('throws for invalid args', () => {
view = new BrowserView();
expect(() => {
view.setAutoResize(null as any);
}).to.throw(/conversion failure/);
});
});
describe('BrowserView.setBounds()', () => {
it('does not throw for valid args', () => {
view = new BrowserView();
view.setBounds({ x: 0, y: 0, width: 1, height: 1 });
});
it('throws for invalid args', () => {
view = new BrowserView();
expect(() => {
view.setBounds(null as any);
}).to.throw(/conversion failure/);
expect(() => {
view.setBounds({} as any);
}).to.throw(/conversion failure/);
});
});
describe('BrowserView.getBounds()', () => {
it('returns correct bounds on a framed window', () => {
view = new BrowserView();
const bounds = { x: 10, y: 20, width: 30, height: 40 };
view.setBounds(bounds);
expect(view.getBounds()).to.deep.equal(bounds);
});
it('returns correct bounds on a frameless window', () => {
view = new BrowserView();
const bounds = { x: 10, y: 20, width: 30, height: 40 };
view.setBounds(bounds);
expect(view.getBounds()).to.deep.equal(bounds);
});
});
describe('BrowserWindow.setBrowserView()', () => {
it('does not throw for valid args', () => {
view = new BrowserView();
w.setBrowserView(view);
});
it('does not throw if called multiple times with same view', () => {
view = new BrowserView();
w.setBrowserView(view);
w.setBrowserView(view);
w.setBrowserView(view);
});
});
describe('BrowserWindow.getBrowserView()', () => {
it('returns the set view', () => {
view = new BrowserView();
w.setBrowserView(view);
const view2 = w.getBrowserView();
expect(view2!.webContents.id).to.equal(view.webContents.id);
});
it('returns null if none is set', () => {
const view = w.getBrowserView();
expect(view).to.be.null('view');
});
});
describe('BrowserWindow.addBrowserView()', () => {
it('does not throw for valid args', () => {
const view1 = new BrowserView();
defer(() => view1.webContents.destroy());
w.addBrowserView(view1);
defer(() => w.removeBrowserView(view1));
const view2 = new BrowserView();
defer(() => view2.webContents.destroy());
w.addBrowserView(view2);
defer(() => w.removeBrowserView(view2));
});
it('does not throw if called multiple times with same view', () => {
view = new BrowserView();
w.addBrowserView(view);
w.addBrowserView(view);
w.addBrowserView(view);
});
it('does not crash if the BrowserView webContents are destroyed prior to window addition', () => {
expect(() => {
const view1 = new BrowserView();
view1.webContents.destroy();
w.addBrowserView(view1);
}).to.not.throw();
});
it('does not crash if the webContents is destroyed after a URL is loaded', () => {
view = new BrowserView();
expect(async () => {
view.setBounds({ x: 0, y: 0, width: 400, height: 300 });
await view.webContents.loadURL('data:text/html,hello there');
view.webContents.destroy();
}).to.not.throw();
});
it('can handle BrowserView reparenting', async () => {
view = new BrowserView();
w.addBrowserView(view);
view.webContents.loadURL('about:blank');
await once(view.webContents, 'did-finish-load');
const w2 = new BrowserWindow({ show: false });
w2.addBrowserView(view);
w.close();
view.webContents.loadURL(`file://${fixtures}/pages/blank.html`);
await once(view.webContents, 'did-finish-load');
// Clean up - the afterEach hook assumes the webContents on w is still alive.
w = new BrowserWindow({ show: false });
w2.close();
w2.destroy();
});
});
describe('BrowserWindow.removeBrowserView()', () => {
it('does not throw if called multiple times with same view', () => {
expect(() => {
view = new BrowserView();
w.addBrowserView(view);
w.removeBrowserView(view);
w.removeBrowserView(view);
}).to.not.throw();
});
});
describe('BrowserWindow.getBrowserViews()', () => {
it('returns same views as was added', () => {
const view1 = new BrowserView();
defer(() => view1.webContents.destroy());
w.addBrowserView(view1);
defer(() => w.removeBrowserView(view1));
const view2 = new BrowserView();
defer(() => view2.webContents.destroy());
w.addBrowserView(view2);
defer(() => w.removeBrowserView(view2));
const views = w.getBrowserViews();
expect(views).to.have.lengthOf(2);
expect(views[0].webContents.id).to.equal(view1.webContents.id);
expect(views[1].webContents.id).to.equal(view2.webContents.id);
});
});
describe('BrowserWindow.setTopBrowserView()', () => {
it('should throw an error when a BrowserView is not attached to the window', () => {
view = new BrowserView();
expect(() => {
w.setTopBrowserView(view);
}).to.throw(/is not attached/);
});
it('should throw an error when a BrowserView is attached to some other window', () => {
view = new BrowserView();
const win2 = new BrowserWindow();
w.addBrowserView(view);
view.setBounds({ x: 0, y: 0, width: 100, height: 100 });
win2.addBrowserView(view);
expect(() => {
w.setTopBrowserView(view);
}).to.throw(/is not attached/);
win2.close();
win2.destroy();
});
});
describe('BrowserView.webContents.getOwnerBrowserWindow()', () => {
it('points to owning window', () => {
view = new BrowserView();
expect(view.webContents.getOwnerBrowserWindow()).to.be.null('owner browser window');
w.setBrowserView(view);
expect(view.webContents.getOwnerBrowserWindow()).to.equal(w);
w.setBrowserView(null);
expect(view.webContents.getOwnerBrowserWindow()).to.be.null('owner browser window');
});
});
describe('shutdown behavior', () => {
it('does not crash on exit', async () => {
const rc = await startRemoteControlApp();
await rc.remotely(() => {
const { BrowserView, app } = require('electron');
new BrowserView({}) // eslint-disable-line
setTimeout(() => {
app.quit();
});
});
const [code] = await once(rc.process, 'exit');
expect(code).to.equal(0);
});
it('does not crash on exit if added to a browser window', async () => {
const rc = await startRemoteControlApp();
await rc.remotely(() => {
const { app, BrowserView, BrowserWindow } = require('electron');
const bv = new BrowserView();
bv.webContents.loadURL('about:blank');
const bw = new BrowserWindow({ show: false });
bw.addBrowserView(bv);
setTimeout(() => {
app.quit();
});
});
const [code] = await once(rc.process, 'exit');
expect(code).to.equal(0);
});
});
describe('window.open()', () => {
it('works in BrowserView', (done) => {
view = new BrowserView();
w.setBrowserView(view);
view.webContents.setWindowOpenHandler(({ url, frameName }) => {
expect(url).to.equal('http://host/');
expect(frameName).to.equal('host');
done();
return { action: 'deny' };
});
view.webContents.loadFile(path.join(fixtures, 'pages', 'window-open.html'));
});
});
describe('BrowserView.capturePage(rect)', () => {
it('returns a Promise with a Buffer', async () => {
view = new BrowserView({
webPreferences: {
backgroundThrottling: false
}
});
w.addBrowserView(view);
view.setBounds({
...w.getBounds(),
x: 0,
y: 0
});
const image = await view.webContents.capturePage({
x: 0,
y: 0,
width: 100,
height: 100
});
expect(image.isEmpty()).to.equal(true);
});
xit('resolves after the window is hidden and capturer count is non-zero', async () => {
view = new BrowserView({
webPreferences: {
backgroundThrottling: false
}
});
w.setBrowserView(view);
view.setBounds({
...w.getBounds(),
x: 0,
y: 0
});
await view.webContents.loadFile(path.join(fixtures, 'pages', 'a.html'));
const image = await view.webContents.capturePage();
expect(image.isEmpty()).to.equal(false);
});
});
});