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Reapply "try to track down which tests trigger hang"

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This reverts commit 0321f76d01.
This commit is contained in:
John Kleinschmidt
2024-11-21 20:03:34 -05:00
parent ea79d94abf
commit cdee7de049
5 changed files with 2948 additions and 3 deletions
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14
.github/workflows/pipeline-segment-electron-test.yml vendored
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@@ -50,7 +50,7 @@ jobs:
fail-fast: false
matrix:
build-type: ${{ inputs.target-platform == 'macos' && fromJSON('["darwin","mas"]') || (inputs.target-platform == 'windows' && fromJSON('["windows"]') || fromJSON('["linux"]')) }}
shard: ${{ inputs.target-platform == 'linux' && fromJSON('[1, 2, 3]') || fromJSON('[1, 2]') }}
shard: ${{ inputs.target-platform != 'macos' && fromJSON('[1, 2, 3, 4]') || fromJSON('[1, 2]') }}
env:
BUILD_TYPE: ${{ matrix.build-type }}
TARGET_ARCH: ${{ inputs.target-arch }}
@@ -191,7 +191,7 @@ jobs:
cd src/electron
export ELECTRON_TEST_RESULTS_DIR=`pwd`/junit
# Get which tests are on this shard
tests_files=$(node script/split-tests ${{ matrix.shard }} ${{ inputs.target-platform == 'macos' && 2 || 3 }})
tests_files=$(node script/split-tests ${{ matrix.shard }} ${{ inputs.target-platform == 'macos' && 2 || 4 }})
# Run tests
if [ "`uname`" = "Darwin" ]; then
@@ -225,7 +225,15 @@ jobs:
cd src\electron
echo ELECTRON_TEST_RESULTS_DIR=$PWD\junit >> $env:GITHUB_ENV
# Get which tests are on this shard
$tests_files=node script\split-tests ${{ matrix.shard }} 2
if ('${{ matrix.shard }}' -eq '1') {
$tests_files='spec\api-web-contents1-spec.ts spec\api-app-spec.ts spec\webview-spec.ts spec\extensions-spec.ts spec\api-ipc-spec.ts spec\api-utility-process-spec.ts spec\api-native-image-spec.ts spec\api-web-frame-main-spec.ts spec\api-menu-item-spec.ts spec\api-tray-spec.ts spec\api-system-preferences-spec.ts spec\api-net-session-spec.ts spec\api-web-contents-view-spec.ts spec\logging-spec.ts spec\api-process-spec.ts spec\guest-window-manager-spec.ts spec\api-debugger-spec.ts spec\api-clipboard-spec.ts spec\deprecate-spec.ts spec\api-ipc-renderer-spec.ts spec\api-screen-spec.ts spec\esm-spec.ts spec\security-warnings-spec.ts spec\api-safe-storage-spec.ts spec\api-content-tracing-spec.ts spec\api-notification-spec.ts spec\api-net-log-spec.ts spec\api-ipc-main-spec.ts spec\asar-integrity-spec.ts spec\api-service-workers-spec.ts spec\crash-spec.ts spec\types-spec.ts spec\api-web-utils-spec.ts spec\visibility-state-spec.ts spec\api-power-save-blocker-spec.ts'
} elseif ('${{ matrix.shard }}' -eq '2') {
$tests_files='spec\api-web-contents2-spec.ts spec\api-app-spec.ts spec\webview-spec.ts spec\extensions-spec.ts spec\api-ipc-spec.ts spec\api-utility-process-spec.ts spec\api-native-image-spec.ts spec\api-web-frame-main-spec.ts spec\api-menu-item-spec.ts spec\api-tray-spec.ts spec\api-system-preferences-spec.ts spec\api-net-session-spec.ts spec\api-web-contents-view-spec.ts spec\logging-spec.ts spec\api-process-spec.ts spec\guest-window-manager-spec.ts spec\api-debugger-spec.ts spec\api-clipboard-spec.ts spec\deprecate-spec.ts spec\api-ipc-renderer-spec.ts spec\api-screen-spec.ts spec\esm-spec.ts spec\security-warnings-spec.ts spec\api-safe-storage-spec.ts spec\api-content-tracing-spec.ts spec\api-notification-spec.ts spec\api-net-log-spec.ts spec\api-ipc-main-spec.ts spec\asar-integrity-spec.ts spec\api-service-workers-spec.ts spec\crash-spec.ts spec\types-spec.ts spec\api-web-utils-spec.ts spec\visibility-state-spec.ts spec\api-power-save-blocker-spec.ts'
} elseif ('${{ matrix.shard }}' -eq '3') {
$tests_files='spec\api-web-contents3-spec.ts spec\api-app-spec.ts spec\webview-spec.ts spec\extensions-spec.ts spec\api-ipc-spec.ts spec\api-utility-process-spec.ts spec\api-native-image-spec.ts spec\api-web-frame-main-spec.ts spec\api-menu-item-spec.ts spec\api-tray-spec.ts spec\api-system-preferences-spec.ts spec\api-net-session-spec.ts spec\api-web-contents-view-spec.ts spec\logging-spec.ts spec\api-process-spec.ts spec\guest-window-manager-spec.ts spec\api-debugger-spec.ts spec\api-clipboard-spec.ts spec\deprecate-spec.ts spec\api-ipc-renderer-spec.ts spec\api-screen-spec.ts spec\esm-spec.ts spec\security-warnings-spec.ts spec\api-safe-storage-spec.ts spec\api-content-tracing-spec.ts spec\api-notification-spec.ts spec\api-net-log-spec.ts spec\api-ipc-main-spec.ts spec\asar-integrity-spec.ts spec\api-service-workers-spec.ts spec\crash-spec.ts spec\types-spec.ts spec\api-web-utils-spec.ts spec\visibility-state-spec.ts spec\api-power-save-blocker-spec.ts'
} elseif ('${{ matrix.shard }}' -eq '4') {
$tests_files='spec\api-web-contents4-spec.ts spec\api-app-spec.ts spec\webview-spec.ts spec\extensions-spec.ts spec\api-ipc-spec.ts spec\api-utility-process-spec.ts spec\api-native-image-spec.ts spec\api-web-frame-main-spec.ts spec\api-menu-item-spec.ts spec\api-tray-spec.ts spec\api-system-preferences-spec.ts spec\api-net-session-spec.ts spec\api-web-contents-view-spec.ts spec\logging-spec.ts spec\api-process-spec.ts spec\guest-window-manager-spec.ts spec\api-debugger-spec.ts spec\api-clipboard-spec.ts spec\deprecate-spec.ts spec\api-ipc-renderer-spec.ts spec\api-screen-spec.ts spec\esm-spec.ts spec\security-warnings-spec.ts spec\api-safe-storage-spec.ts spec\api-content-tracing-spec.ts spec\api-notification-spec.ts spec\api-net-log-spec.ts spec\api-ipc-main-spec.ts spec\asar-integrity-spec.ts spec\api-service-workers-spec.ts spec\crash-spec.ts spec\types-spec.ts spec\api-web-utils-spec.ts spec\visibility-state-spec.ts spec\api-power-save-blocker-spec.ts'
}
echo tests_files="$tests_files" >> $env:GITHUB_ENV
if ('${{ inputs.target-arch }}' -eq 'x86') {
echo npm_config_arch=ia32 >> $env:GITHUB_ENV

766
spec/api-web-contents1-spec.ts Normal file
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@@ -0,0 +1,766 @@
import { BrowserWindow, ipcMain, webContents, BrowserView, WebContents } from 'electron/main';
import { expect } from 'chai';
import { once } from 'node:events';
import * as http from 'node:http';
import * as path from 'node:path';
import { setTimeout } from 'node:timers/promises';
import { ifdescribe, waitUntil, listen, ifit } from './lib/spec-helpers';
import { closeAllWindows } from './lib/window-helpers';
const fixturesPath = path.resolve(__dirname, 'fixtures');
const features = process._linkedBinding('electron_common_features');
describe('webContents1 module', () => {
describe('getAllWebContents() API', () => {
afterEach(closeAllWindows);
it('returns an array of web contents', async () => {
const w = new BrowserWindow({
show: false,
webPreferences: { webviewTag: true }
});
w.loadFile(path.join(fixturesPath, 'pages', 'webview-zoom-factor.html'));
await once(w.webContents, 'did-attach-webview') as [any, WebContents];
w.webContents.openDevTools();
await once(w.webContents, 'devtools-opened');
const all = webContents.getAllWebContents().sort((a, b) => {
return a.id - b.id;
});
expect(all).to.have.length(3);
expect(all[0].getType()).to.equal('window');
expect(all[all.length - 2].getType()).to.equal('webview');
expect(all[all.length - 1].getType()).to.equal('remote');
});
});
describe('webContents properties', () => {
afterEach(closeAllWindows);
it('has expected additional enumerable properties', () => {
const w = new BrowserWindow({ show: false });
const properties = Object.getOwnPropertyNames(w.webContents);
expect(properties).to.include('ipc');
expect(properties).to.include('navigationHistory');
});
});
describe('fromId()', () => {
it('returns undefined for an unknown id', () => {
expect(webContents.fromId(12345)).to.be.undefined();
});
});
describe('fromFrame()', () => {
it('returns WebContents for mainFrame', () => {
const contents = (webContents as typeof ElectronInternal.WebContents).create();
expect(webContents.fromFrame(contents.mainFrame)).to.equal(contents);
});
it('returns undefined for disposed frame', async () => {
const contents = (webContents as typeof ElectronInternal.WebContents).create();
const { mainFrame } = contents;
contents.destroy();
await waitUntil(() => typeof webContents.fromFrame(mainFrame) === 'undefined');
});
it('throws when passing invalid argument', async () => {
let errored = false;
try {
webContents.fromFrame({} as any);
} catch {
errored = true;
}
expect(errored).to.be.true();
});
});
describe('fromDevToolsTargetId()', () => {
it('returns WebContents for attached DevTools target', async () => {
const w = new BrowserWindow({ show: false });
await w.loadURL('about:blank');
try {
await w.webContents.debugger.attach('1.3');
const { targetInfo } = await w.webContents.debugger.sendCommand('Target.getTargetInfo');
expect(webContents.fromDevToolsTargetId(targetInfo.targetId)).to.equal(w.webContents);
} finally {
await w.webContents.debugger.detach();
}
});
it('returns undefined for an unknown id', () => {
expect(webContents.fromDevToolsTargetId('nope')).to.be.undefined();
});
});
describe('will-prevent-unload event', function () {
afterEach(closeAllWindows);
it('does not emit if beforeunload returns undefined in a BrowserWindow', async () => {
const w = new BrowserWindow({ show: false });
w.webContents.once('will-prevent-unload', () => {
expect.fail('should not have fired');
});
await w.loadFile(path.join(__dirname, 'fixtures', 'api', 'beforeunload-undefined.html'));
const wait = once(w, 'closed');
w.close();
await wait;
});
it('does not emit if beforeunload returns undefined in a BrowserView', async () => {
const w = new BrowserWindow({ show: false });
const view = new BrowserView();
w.setBrowserView(view);
view.setBounds(w.getBounds());
view.webContents.once('will-prevent-unload', () => {
expect.fail('should not have fired');
});
await view.webContents.loadFile(path.join(__dirname, 'fixtures', 'api', 'beforeunload-undefined.html'));
const wait = once(w, 'closed');
w.close();
await wait;
});
it('emits if beforeunload returns false in a BrowserWindow', async () => {
const w = new BrowserWindow({ show: false });
await w.loadFile(path.join(__dirname, 'fixtures', 'api', 'beforeunload-false.html'));
w.close();
await once(w.webContents, 'will-prevent-unload');
});
it('emits if beforeunload returns false in a BrowserView', async () => {
const w = new BrowserWindow({ show: false });
const view = new BrowserView();
w.setBrowserView(view);
view.setBounds(w.getBounds());
await view.webContents.loadFile(path.join(__dirname, 'fixtures', 'api', 'beforeunload-false.html'));
w.close();
await once(view.webContents, 'will-prevent-unload');
});
it('supports calling preventDefault on will-prevent-unload events in a BrowserWindow', async () => {
const w = new BrowserWindow({ show: false });
w.webContents.once('will-prevent-unload', event => event.preventDefault());
await w.loadFile(path.join(__dirname, 'fixtures', 'api', 'beforeunload-false.html'));
const wait = once(w, 'closed');
w.close();
await wait;
});
});
describe('webContents.send(channel, args...)', () => {
afterEach(closeAllWindows);
it('throws an error when the channel is missing', () => {
const w = new BrowserWindow({ show: false });
expect(() => {
(w.webContents.send as any)();
}).to.throw('Missing required channel argument');
expect(() => {
w.webContents.send(null as any);
}).to.throw('Missing required channel argument');
});
it('does not block node async APIs when sent before document is ready', (done) => {
// Please reference https://github.com/electron/electron/issues/19368 if
// this test fails.
ipcMain.once('async-node-api-done', () => {
done();
});
const w = new BrowserWindow({
show: false,
webPreferences: {
nodeIntegration: true,
sandbox: false,
contextIsolation: false
}
});
w.loadFile(path.join(fixturesPath, 'pages', 'send-after-node.html'));
setTimeout(50).then(() => {
w.webContents.send('test');
});
});
});
ifdescribe(features.isPrintingEnabled())('webContents.print()', () => {
let w: BrowserWindow;
beforeEach(() => {
w = new BrowserWindow({ show: false });
});
afterEach(closeAllWindows);
it('does not throw when options are not passed', () => {
expect(() => {
w.webContents.print();
}).not.to.throw();
expect(() => {
w.webContents.print(undefined);
}).not.to.throw();
});
it('does not throw when options object is empty', () => {
expect(() => {
w.webContents.print({});
}).not.to.throw();
});
it('throws when invalid settings are passed', () => {
expect(() => {
// @ts-ignore this line is intentionally incorrect
w.webContents.print(true);
}).to.throw('webContents.print(): Invalid print settings specified.');
expect(() => {
// @ts-ignore this line is intentionally incorrect
w.webContents.print(null);
}).to.throw('webContents.print(): Invalid print settings specified.');
});
it('throws when an invalid pageSize is passed', () => {
const badSize = 5;
expect(() => {
// @ts-ignore this line is intentionally incorrect
w.webContents.print({ pageSize: badSize });
}).to.throw(`Unsupported pageSize: ${badSize}`);
});
it('throws when an invalid callback is passed', () => {
expect(() => {
// @ts-ignore this line is intentionally incorrect
w.webContents.print({}, true);
}).to.throw('webContents.print(): Invalid optional callback provided.');
});
it('fails when an invalid deviceName is passed', (done) => {
w.webContents.print({ deviceName: 'i-am-a-nonexistent-printer' }, (success, reason) => {
expect(success).to.equal(false);
expect(reason).to.match(/Invalid deviceName provided/);
done();
});
});
it('throws when an invalid pageSize is passed', () => {
expect(() => {
// @ts-ignore this line is intentionally incorrect
w.webContents.print({ pageSize: 'i-am-a-bad-pagesize' }, () => {});
}).to.throw('Unsupported pageSize: i-am-a-bad-pagesize');
});
it('throws when an invalid custom pageSize is passed', () => {
expect(() => {
w.webContents.print({
pageSize: {
width: 100,
height: 200
}
});
}).to.throw('height and width properties must be minimum 352 microns.');
});
it('does not crash with custom margins', () => {
expect(() => {
w.webContents.print({
silent: true,
margins: {
marginType: 'custom',
top: 1,
bottom: 1,
left: 1,
right: 1
}
});
}).to.not.throw();
});
});
describe('webContents.executeJavaScript', () => {
describe('in about:blank', () => {
const expected = 'hello, world!';
const expectedErrorMsg = 'woops!';
const code = `(() => "${expected}")()`;
const asyncCode = `(() => new Promise(r => setTimeout(() => r("${expected}"), 500)))()`;
const badAsyncCode = `(() => new Promise((r, e) => setTimeout(() => e("${expectedErrorMsg}"), 500)))()`;
const errorTypes = new Set([
Error,
ReferenceError,
EvalError,
RangeError,
SyntaxError,
TypeError,
URIError
]);
let w: BrowserWindow;
before(async () => {
w = new BrowserWindow({ show: false, webPreferences: { contextIsolation: false } });
await w.loadURL('about:blank');
});
after(closeAllWindows);
it('resolves the returned promise with the result', async () => {
const result = await w.webContents.executeJavaScript(code);
expect(result).to.equal(expected);
});
it('resolves the returned promise with the result if the code returns an asynchronous promise', async () => {
const result = await w.webContents.executeJavaScript(asyncCode);
expect(result).to.equal(expected);
});
it('rejects the returned promise if an async error is thrown', async () => {
await expect(w.webContents.executeJavaScript(badAsyncCode)).to.eventually.be.rejectedWith(expectedErrorMsg);
});
it('rejects the returned promise with an error if an Error.prototype is thrown', async () => {
for (const error of errorTypes) {
await expect(w.webContents.executeJavaScript(`Promise.reject(new ${error.name}("Wamp-wamp"))`))
.to.eventually.be.rejectedWith(error);
}
});
});
describe('on a real page', () => {
let w: BrowserWindow;
beforeEach(() => {
w = new BrowserWindow({ show: false });
});
afterEach(closeAllWindows);
let server: http.Server;
let serverUrl: string;
before(async () => {
server = http.createServer((request, response) => {
response.end();
});
serverUrl = (await listen(server)).url;
});
after(() => {
server.close();
server = null as unknown as http.Server;
});
it('works after page load and during subframe load', async () => {
await w.loadURL(serverUrl);
// initiate a sub-frame load, then try and execute script during it
await w.webContents.executeJavaScript(`
var iframe = document.createElement('iframe')
iframe.src = '${serverUrl}/slow'
document.body.appendChild(iframe)
null // don't return the iframe
`);
await w.webContents.executeJavaScript('console.log(\'hello\')');
});
it('executes after page load', async () => {
const executeJavaScript = w.webContents.executeJavaScript('(() => "test")()');
w.loadURL(serverUrl);
const result = await executeJavaScript;
expect(result).to.equal('test');
});
});
});
describe('webContents.executeJavaScriptInIsolatedWorld', () => {
let w: BrowserWindow;
before(async () => {
w = new BrowserWindow({ show: false, webPreferences: { contextIsolation: true } });
await w.loadURL('about:blank');
});
it('resolves the returned promise with the result', async () => {
await w.webContents.executeJavaScriptInIsolatedWorld(999, [{ code: 'window.X = 123' }]);
const isolatedResult = await w.webContents.executeJavaScriptInIsolatedWorld(999, [{ code: 'window.X' }]);
const mainWorldResult = await w.webContents.executeJavaScript('window.X');
expect(isolatedResult).to.equal(123);
expect(mainWorldResult).to.equal(undefined);
});
});
describe('loadURL() promise API', () => {
let w: BrowserWindow;
let s: http.Server;
afterEach(() => {
if (s) {
s.close();
s = null as unknown as http.Server;
}
});
beforeEach(async () => {
w = new BrowserWindow({ show: false });
});
afterEach(closeAllWindows);
it('resolves when done loading', async () => {
await expect(w.loadURL('about:blank')).to.eventually.be.fulfilled();
});
it('resolves when done loading a file URL', async () => {
await expect(w.loadFile(path.join(fixturesPath, 'pages', 'base-page.html'))).to.eventually.be.fulfilled();
});
it('resolves when navigating within the page', async () => {
await w.loadFile(path.join(fixturesPath, 'pages', 'base-page.html'));
await setTimeout();
await expect(w.loadURL(w.getURL() + '#foo')).to.eventually.be.fulfilled();
});
it('resolves after browser initiated navigation', async () => {
let finishedLoading = false;
w.webContents.on('did-finish-load', function () {
finishedLoading = true;
});
await w.loadFile(path.join(fixturesPath, 'pages', 'navigate_in_page_and_wait.html'));
expect(finishedLoading).to.be.true();
});
it('rejects when failing to load a file URL', async () => {
await expect(w.loadURL('file:non-existent')).to.eventually.be.rejected()
.and.have.property('code', 'ERR_FILE_NOT_FOUND');
});
// FIXME: Temporarily disable on WOA until
// https://github.com/electron/electron/issues/20008 is resolved
ifit(!(process.platform === 'win32' && process.arch === 'arm64'))('rejects when loading fails due to DNS not resolved', async () => {
await expect(w.loadURL('https://err.name.not.resolved')).to.eventually.be.rejected()
.and.have.property('code', 'ERR_NAME_NOT_RESOLVED');
});
it('rejects when navigation is cancelled due to a bad scheme', async () => {
await expect(w.loadURL('bad-scheme://foo')).to.eventually.be.rejected()
.and.have.property('code', 'ERR_FAILED');
});
it('does not crash when loading a new URL with emulation settings set', async () => {
const setEmulation = async () => {
if (w.webContents) {
w.webContents.debugger.attach('1.3');
const deviceMetrics = {
width: 700,
height: 600,
deviceScaleFactor: 2,
mobile: true,
dontSetVisibleSize: true
};
await w.webContents.debugger.sendCommand(
'Emulation.setDeviceMetricsOverride',
deviceMetrics
);
}
};
try {
await w.loadURL(`file://${fixturesPath}/pages/blank.html`);
await setEmulation();
await w.loadURL('data:text/html,<h1>HELLO</h1>');
await setEmulation();
} catch (e) {
expect((e as Error).message).to.match(/Debugger is already attached to the target/);
}
});
it('fails if loadURL is called inside a non-reentrant critical section', (done) => {
w.webContents.once('did-fail-load', (_event, _errorCode, _errorDescription, validatedURL) => {
expect(validatedURL).to.contain('blank.html');
done();
});
w.webContents.once('did-start-loading', () => {
w.loadURL(`file://${fixturesPath}/pages/blank.html`);
});
w.loadURL('data:text/html,<h1>HELLO</h1>');
});
it('sets appropriate error information on rejection', async () => {
let err: any;
try {
await w.loadURL('file:non-existent');
} catch (e) {
err = e;
}
expect(err).not.to.be.null();
expect(err.code).to.eql('ERR_FILE_NOT_FOUND');
expect(err.errno).to.eql(-6);
expect(err.url).to.eql(process.platform === 'win32' ? 'file://non-existent/' : 'file:///non-existent');
});
it('rejects if the load is aborted', async () => {
s = http.createServer(() => { /* never complete the request */ });
const { port } = await listen(s);
const p = expect(w.loadURL(`http://127.0.0.1:${port}`)).to.eventually.be.rejectedWith(Error, /ERR_ABORTED/);
// load a different file before the first load completes, causing the
// first load to be aborted.
await w.loadFile(path.join(fixturesPath, 'pages', 'base-page.html'));
await p;
});
it("doesn't reject when a subframe fails to load", async () => {
let resp = null as unknown as http.ServerResponse;
s = http.createServer((req, res) => {
res.writeHead(200, { 'Content-Type': 'text/html' });
res.write('<iframe src="http://err.name.not.resolved"></iframe>');
resp = res;
// don't end the response yet
});
const { port } = await listen(s);
const p = new Promise<void>(resolve => {
w.webContents.on('did-fail-load', (event, errorCode, errorDescription, validatedURL, isMainFrame) => {
if (!isMainFrame) {
resolve();
}
});
});
const main = w.loadURL(`http://127.0.0.1:${port}`);
await p;
resp.end();
await main;
});
it("doesn't resolve when a subframe loads", async () => {
let resp = null as unknown as http.ServerResponse;
s = http.createServer((req, res) => {
res.writeHead(200, { 'Content-Type': 'text/html' });
res.write('<iframe src="about:blank"></iframe>');
resp = res;
// don't end the response yet
});
const { port } = await listen(s);
const p = new Promise<void>(resolve => {
w.webContents.on('did-frame-finish-load', (event, isMainFrame) => {
if (!isMainFrame) {
resolve();
}
});
});
const main = w.loadURL(`http://127.0.0.1:${port}`);
await p;
resp.destroy(); // cause the main request to fail
await expect(main).to.eventually.be.rejected()
.and.have.property('errno', -355); // ERR_INCOMPLETE_CHUNKED_ENCODING
});
it('subsequent load failures reject each time', async () => {
await expect(w.loadURL('file:non-existent')).to.eventually.be.rejected();
await expect(w.loadURL('file:non-existent')).to.eventually.be.rejected();
});
it('invalid URL load rejects', async () => {
await expect(w.loadURL('invalidURL')).to.eventually.be.rejected();
});
});
describe('navigationHistory', () => {
let w: BrowserWindow;
const urlPage1 = 'data:text/html,<html><head><script>document.title = "Page 1";</script></head><body></body></html>';
const urlPage2 = 'data:text/html,<html><head><script>document.title = "Page 2";</script></head><body></body></html>';
const urlPage3 = 'data:text/html,<html><head><script>document.title = "Page 3";</script></head><body></body></html>';
beforeEach(async () => {
w = new BrowserWindow({ show: false });
});
afterEach(closeAllWindows);
describe('navigationHistory.removeEntryAtIndex(index) API', () => {
it('should remove a navigation entry given a valid index', async () => {
await w.loadURL(urlPage1);
await w.loadURL(urlPage2);
await w.loadURL(urlPage3);
const initialLength = w.webContents.navigationHistory.length();
const wasRemoved = w.webContents.navigationHistory.removeEntryAtIndex(1); // Attempt to remove the second entry
const newLength = w.webContents.navigationHistory.length();
expect(wasRemoved).to.be.true();
expect(newLength).to.equal(initialLength - 1);
});
it('should not remove the current active navigation entry', async () => {
await w.loadURL(urlPage1);
await w.loadURL(urlPage2);
const activeIndex = w.webContents.navigationHistory.getActiveIndex();
const wasRemoved = w.webContents.navigationHistory.removeEntryAtIndex(activeIndex);
expect(wasRemoved).to.be.false();
});
it('should return false given an invalid index larger than history length', async () => {
await w.loadURL(urlPage1);
const wasRemoved = w.webContents.navigationHistory.removeEntryAtIndex(5); // Index larger than history length
expect(wasRemoved).to.be.false();
});
it('should return false given an invalid negative index', async () => {
await w.loadURL(urlPage1);
const wasRemoved = w.webContents.navigationHistory.removeEntryAtIndex(-1); // Negative index
expect(wasRemoved).to.be.false();
});
});
describe('navigationHistory.canGoBack and navigationHistory.goBack API', () => {
it('should not be able to go back if history is empty', async () => {
expect(w.webContents.navigationHistory.canGoBack()).to.be.false();
});
it('should be able to go back if history is not empty', async () => {
await w.loadURL(urlPage1);
await w.loadURL(urlPage2);
expect(w.webContents.navigationHistory.getActiveIndex()).to.equal(1);
expect(w.webContents.navigationHistory.canGoBack()).to.be.true();
w.webContents.navigationHistory.goBack();
expect(w.webContents.navigationHistory.getActiveIndex()).to.equal(0);
});
});
describe('navigationHistory.canGoForward and navigationHistory.goForward API', () => {
it('should not be able to go forward if history is empty', async () => {
expect(w.webContents.navigationHistory.canGoForward()).to.be.false();
});
it('should not be able to go forward if current index is same as history length', async () => {
await w.loadURL(urlPage1);
await w.loadURL(urlPage2);
expect(w.webContents.navigationHistory.canGoForward()).to.be.false();
});
it('should be able to go forward if history is not empty and active index is less than history length', async () => {
await w.loadURL(urlPage1);
await w.loadURL(urlPage2);
w.webContents.navigationHistory.goBack();
expect(w.webContents.navigationHistory.getActiveIndex()).to.equal(0);
expect(w.webContents.navigationHistory.canGoForward()).to.be.true();
w.webContents.navigationHistory.goForward();
expect(w.webContents.navigationHistory.getActiveIndex()).to.equal(1);
});
});
describe('navigationHistory.canGoToOffset(index) and navigationHistory.goToOffset(index) API', () => {
it('should not be able to go to invalid offset', async () => {
expect(w.webContents.navigationHistory.canGoToOffset(-1)).to.be.false();
expect(w.webContents.navigationHistory.canGoToOffset(10)).to.be.false();
});
it('should be able to go to valid negative offset', async () => {
await w.loadURL(urlPage1);
await w.loadURL(urlPage2);
await w.loadURL(urlPage3);
expect(w.webContents.navigationHistory.canGoToOffset(-2)).to.be.true();
expect(w.webContents.navigationHistory.getActiveIndex()).to.equal(2);
w.webContents.navigationHistory.goToOffset(-2);
expect(w.webContents.navigationHistory.getActiveIndex()).to.equal(0);
});
it('should be able to go to valid positive offset', async () => {
await w.loadURL(urlPage1);
await w.loadURL(urlPage2);
await w.loadURL(urlPage3);
w.webContents.navigationHistory.goBack();
expect(w.webContents.navigationHistory.canGoToOffset(1)).to.be.true();
expect(w.webContents.navigationHistory.getActiveIndex()).to.equal(1);
w.webContents.navigationHistory.goToOffset(1);
expect(w.webContents.navigationHistory.getActiveIndex()).to.equal(2);
});
});
describe('navigationHistory.clear API', () => {
it('should be able clear history', async () => {
await w.loadURL(urlPage1);
await w.loadURL(urlPage2);
await w.loadURL(urlPage3);
expect(w.webContents.navigationHistory.length()).to.equal(3);
w.webContents.navigationHistory.clear();
expect(w.webContents.navigationHistory.length()).to.equal(1);
});
});
describe('navigationHistory.getEntryAtIndex(index) API ', () => {
it('should fetch default navigation entry when no urls are loaded', async () => {
const result = w.webContents.navigationHistory.getEntryAtIndex(0);
expect(result).to.deep.equal({ url: '', title: '' });
});
it('should fetch navigation entry given a valid index', async () => {
await w.loadURL(urlPage1);
const result = w.webContents.navigationHistory.getEntryAtIndex(0);
expect(result).to.deep.equal({ url: urlPage1, title: 'Page 1' });
});
it('should return null given an invalid index larger than history length', async () => {
await w.loadURL(urlPage1);
const result = w.webContents.navigationHistory.getEntryAtIndex(5);
expect(result).to.be.null();
});
it('should return null given an invalid negative index', async () => {
await w.loadURL(urlPage1);
const result = w.webContents.navigationHistory.getEntryAtIndex(-1);
expect(result).to.be.null();
});
});
describe('navigationHistory.getActiveIndex() API', () => {
it('should return valid active index after a single page visit', async () => {
await w.loadURL(urlPage1);
expect(w.webContents.navigationHistory.getActiveIndex()).to.equal(0);
});
it('should return valid active index after a multiple page visits', async () => {
await w.loadURL(urlPage1);
await w.loadURL(urlPage2);
await w.loadURL(urlPage3);
expect(w.webContents.navigationHistory.getActiveIndex()).to.equal(2);
});
it('should return valid active index given no page visits', async () => {
expect(w.webContents.navigationHistory.getActiveIndex()).to.equal(0);
});
});
describe('navigationHistory.length() API', () => {
it('should return valid history length after a single page visit', async () => {
await w.loadURL(urlPage1);
expect(w.webContents.navigationHistory.length()).to.equal(1);
});
it('should return valid history length after a multiple page visits', async () => {
await w.loadURL(urlPage1);
await w.loadURL(urlPage2);
await w.loadURL(urlPage3);
expect(w.webContents.navigationHistory.length()).to.equal(3);
});
it('should return valid history length given no page visits', async () => {
// Note: Even if no navigation has committed, the history list will always start with an initial navigation entry
// Ref: https://source.chromium.org/chromium/chromium/src/+/main:ceontent/public/browser/navigation_controller.h;l=381
expect(w.webContents.navigationHistory.length()).to.equal(1);
});
});
describe('navigationHistory.getAllEntries() API', () => {
it('should return all navigation entries as an array of NavigationEntry objects', async () => {
await w.loadURL(urlPage1);
await w.loadURL(urlPage2);
await w.loadURL(urlPage3);
const entries = w.webContents.navigationHistory.getAllEntries();
expect(entries.length).to.equal(3);
expect(entries[0]).to.deep.equal({ url: urlPage1, title: 'Page 1' });
expect(entries[1]).to.deep.equal({ url: urlPage2, title: 'Page 2' });
expect(entries[2]).to.deep.equal({ url: urlPage3, title: 'Page 3' });
});
it('should return an empty array when there is no navigation history', async () => {
const entries = w.webContents.navigationHistory.getAllEntries();
expect(entries.length).to.equal(0);
});
});
});
});

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import { BrowserWindow, ipcMain, webContents, session } from 'electron/main';
import { expect } from 'chai';
import { once } from 'node:events';
import * as http from 'node:http';
import * as path from 'node:path';
import { setTimeout } from 'node:timers/promises';
import { ifdescribe, defer, listen, ifit } from './lib/spec-helpers';
import { closeAllWindows } from './lib/window-helpers';
const fixturesPath = path.resolve(__dirname, 'fixtures');
describe('webContents2 module', () => {
describe('getFocusedWebContents() API', () => {
afterEach(closeAllWindows);
// FIXME
ifit(!(process.platform === 'win32' && process.arch === 'arm64'))('returns the focused web contents', async () => {
const w = new BrowserWindow({ show: true });
await w.loadFile(path.join(__dirname, 'fixtures', 'blank.html'));
expect(webContents.getFocusedWebContents()?.id).to.equal(w.webContents.id);
const devToolsOpened = once(w.webContents, 'devtools-opened');
w.webContents.openDevTools();
await devToolsOpened;
expect(webContents.getFocusedWebContents()?.id).to.equal(w.webContents.devToolsWebContents!.id);
const devToolsClosed = once(w.webContents, 'devtools-closed');
w.webContents.closeDevTools();
await devToolsClosed;
expect(webContents.getFocusedWebContents()?.id).to.equal(w.webContents.id);
});
it('does not crash when called on a detached dev tools window', async () => {
const w = new BrowserWindow({ show: true });
w.webContents.openDevTools({ mode: 'detach' });
w.webContents.inspectElement(100, 100);
// For some reason we have to wait for two focused events...?
await once(w.webContents, 'devtools-focused');
expect(() => { webContents.getFocusedWebContents(); }).to.not.throw();
// Work around https://github.com/electron/electron/issues/19985
await setTimeout();
const devToolsClosed = once(w.webContents, 'devtools-closed');
w.webContents.closeDevTools();
await devToolsClosed;
expect(() => { webContents.getFocusedWebContents(); }).to.not.throw();
});
});
describe('setDevToolsWebContents() API', () => {
afterEach(closeAllWindows);
it('sets arbitrary webContents as devtools', async () => {
const w = new BrowserWindow({ show: false });
const devtools = new BrowserWindow({ show: false });
const promise = once(devtools.webContents, 'dom-ready');
w.webContents.setDevToolsWebContents(devtools.webContents);
w.webContents.openDevTools();
await promise;
expect(devtools.webContents.getURL().startsWith('devtools://devtools')).to.be.true();
const result = await devtools.webContents.executeJavaScript('InspectorFrontendHost.constructor.name');
expect(result).to.equal('InspectorFrontendHostImpl');
devtools.destroy();
});
});
describe('isFocused() API', () => {
it('returns false when the window is hidden', async () => {
const w = new BrowserWindow({ show: false });
await w.loadURL('about:blank');
expect(w.isVisible()).to.be.false();
expect(w.webContents.isFocused()).to.be.false();
});
});
describe('isCurrentlyAudible() API', () => {
afterEach(closeAllWindows);
it('returns whether audio is playing', async () => {
const w = new BrowserWindow({ show: false });
await w.loadURL('about:blank');
await w.webContents.executeJavaScript(`
window.context = new AudioContext
// Start in suspended state, because of the
// new web audio api policy.
context.suspend()
window.oscillator = context.createOscillator()
oscillator.connect(context.destination)
oscillator.start()
`);
let p = once(w.webContents, 'audio-state-changed');
w.webContents.executeJavaScript('context.resume()');
await p;
expect(w.webContents.isCurrentlyAudible()).to.be.true();
p = once(w.webContents, 'audio-state-changed');
w.webContents.executeJavaScript('oscillator.stop()');
await p;
expect(w.webContents.isCurrentlyAudible()).to.be.false();
});
});
describe('openDevTools() API', () => {
afterEach(closeAllWindows);
it('can show window with activation', async () => {
const w = new BrowserWindow({ show: false });
const focused = once(w, 'focus');
w.show();
await focused;
expect(w.isFocused()).to.be.true();
const blurred = once(w, 'blur');
w.webContents.openDevTools({ mode: 'detach', activate: true });
await Promise.all([
once(w.webContents, 'devtools-opened'),
once(w.webContents, 'devtools-focused')
]);
await blurred;
expect(w.isFocused()).to.be.false();
});
it('can show window without activation', async () => {
const w = new BrowserWindow({ show: false });
const devtoolsOpened = once(w.webContents, 'devtools-opened');
w.webContents.openDevTools({ mode: 'detach', activate: false });
await devtoolsOpened;
expect(w.webContents.isDevToolsOpened()).to.be.true();
});
it('can show a DevTools window with custom title', async () => {
const w = new BrowserWindow({ show: false });
const devtoolsOpened = once(w.webContents, 'devtools-opened');
w.webContents.openDevTools({ mode: 'detach', activate: false, title: 'myTitle' });
await devtoolsOpened;
expect(w.webContents.getDevToolsTitle()).to.equal('myTitle');
});
it('can re-open devtools', async () => {
const w = new BrowserWindow({ show: false });
const devtoolsOpened = once(w.webContents, 'devtools-opened');
w.webContents.openDevTools({ mode: 'detach', activate: true });
await devtoolsOpened;
expect(w.webContents.isDevToolsOpened()).to.be.true();
const devtoolsClosed = once(w.webContents, 'devtools-closed');
w.webContents.closeDevTools();
await devtoolsClosed;
expect(w.webContents.isDevToolsOpened()).to.be.false();
const devtoolsOpened2 = once(w.webContents, 'devtools-opened');
w.webContents.openDevTools({ mode: 'detach', activate: true });
await devtoolsOpened2;
expect(w.webContents.isDevToolsOpened()).to.be.true();
});
});
describe('setDevToolsTitle() API', () => {
afterEach(closeAllWindows);
it('can set devtools title with function', async () => {
const w = new BrowserWindow({ show: false });
const devtoolsOpened = once(w.webContents, 'devtools-opened');
w.webContents.openDevTools({ mode: 'detach', activate: false });
await devtoolsOpened;
expect(w.webContents.isDevToolsOpened()).to.be.true();
w.webContents.setDevToolsTitle('newTitle');
expect(w.webContents.getDevToolsTitle()).to.equal('newTitle');
});
});
describe('before-input-event event', () => {
afterEach(closeAllWindows);
it('can prevent document keyboard events', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { nodeIntegration: true, contextIsolation: false } });
await w.loadFile(path.join(fixturesPath, 'pages', 'key-events.html'));
const keyDown = new Promise(resolve => {
ipcMain.once('keydown', (event, key) => resolve(key));
});
w.webContents.once('before-input-event', (event, input) => {
if (input.key === 'a') event.preventDefault();
});
w.webContents.sendInputEvent({ type: 'keyDown', keyCode: 'a' });
w.webContents.sendInputEvent({ type: 'keyDown', keyCode: 'b' });
expect(await keyDown).to.equal('b');
});
it('has the correct properties', async () => {
const w = new BrowserWindow({ show: false });
await w.loadFile(path.join(fixturesPath, 'pages', 'base-page.html'));
const testBeforeInput = async (opts: any) => {
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');
const p = once(w.webContents, 'before-input-event') as Promise<[any, Electron.Input]>;
w.webContents.sendInputEvent({
type: opts.type,
keyCode: opts.keyCode,
modifiers: modifiers as any
});
const [, input] = await p;
expect(input.type).to.equal(opts.type);
expect(input.key).to.equal(opts.key);
expect(input.code).to.equal(opts.code);
expect(input.isAutoRepeat).to.equal(opts.isAutoRepeat);
expect(input.shift).to.equal(opts.shift);
expect(input.control).to.equal(opts.control);
expect(input.alt).to.equal(opts.alt);
expect(input.meta).to.equal(opts.meta);
};
await testBeforeInput({
type: 'keyDown',
key: 'A',
code: 'KeyA',
keyCode: 'a',
shift: true,
control: true,
alt: true,
meta: true,
isAutoRepeat: true
});
await testBeforeInput({
type: 'keyUp',
key: '.',
code: 'Period',
keyCode: '.',
shift: false,
control: true,
alt: true,
meta: false,
isAutoRepeat: false
});
await testBeforeInput({
type: 'keyUp',
key: '!',
code: 'Digit1',
keyCode: '1',
shift: true,
control: false,
alt: false,
meta: true,
isAutoRepeat: false
});
await testBeforeInput({
type: 'keyUp',
key: 'Tab',
code: 'Tab',
keyCode: 'Tab',
shift: false,
control: true,
alt: false,
meta: false,
isAutoRepeat: true
});
});
});
// On Mac, zooming isn't done with the mouse wheel.
ifdescribe(process.platform !== 'darwin')('zoom-changed', () => {
afterEach(closeAllWindows);
it('is emitted with the correct zoom-in info', async () => {
const w = new BrowserWindow({ show: false });
await w.loadFile(path.join(fixturesPath, 'pages', 'base-page.html'));
const testZoomChanged = async () => {
w.webContents.sendInputEvent({
type: 'mouseWheel',
x: 300,
y: 300,
deltaX: 0,
deltaY: 1,
wheelTicksX: 0,
wheelTicksY: 1,
modifiers: ['control', 'meta']
});
const [, zoomDirection] = await once(w.webContents, 'zoom-changed') as [any, string];
expect(zoomDirection).to.equal('in');
};
await testZoomChanged();
});
it('is emitted with the correct zoom-out info', async () => {
const w = new BrowserWindow({ show: false });
await w.loadFile(path.join(fixturesPath, 'pages', 'base-page.html'));
const testZoomChanged = async () => {
w.webContents.sendInputEvent({
type: 'mouseWheel',
x: 300,
y: 300,
deltaX: 0,
deltaY: -1,
wheelTicksX: 0,
wheelTicksY: -1,
modifiers: ['control', 'meta']
});
const [, zoomDirection] = await once(w.webContents, 'zoom-changed') as [any, string];
expect(zoomDirection).to.equal('out');
};
await testZoomChanged();
});
});
describe('sendInputEvent(event)', () => {
let w: BrowserWindow;
beforeEach(async () => {
w = new BrowserWindow({ show: false, webPreferences: { nodeIntegration: true, contextIsolation: false } });
await w.loadFile(path.join(fixturesPath, 'pages', 'key-events.html'));
});
afterEach(closeAllWindows);
it('can send keydown events', async () => {
const keydown = once(ipcMain, 'keydown');
w.webContents.sendInputEvent({ type: 'keyDown', keyCode: 'A' });
const [, key, code, keyCode, shiftKey, ctrlKey, altKey] = await keydown;
expect(key).to.equal('a');
expect(code).to.equal('KeyA');
expect(keyCode).to.equal(65);
expect(shiftKey).to.be.false();
expect(ctrlKey).to.be.false();
expect(altKey).to.be.false();
});
it('can send keydown events with modifiers', async () => {
const keydown = once(ipcMain, 'keydown');
w.webContents.sendInputEvent({ type: 'keyDown', keyCode: 'Z', modifiers: ['shift', 'ctrl'] });
const [, key, code, keyCode, shiftKey, ctrlKey, altKey] = await keydown;
expect(key).to.equal('Z');
expect(code).to.equal('KeyZ');
expect(keyCode).to.equal(90);
expect(shiftKey).to.be.true();
expect(ctrlKey).to.be.true();
expect(altKey).to.be.false();
});
it('can send keydown events with special keys', async () => {
const keydown = once(ipcMain, 'keydown');
w.webContents.sendInputEvent({ type: 'keyDown', keyCode: 'Tab', modifiers: ['alt'] });
const [, key, code, keyCode, shiftKey, ctrlKey, altKey] = await keydown;
expect(key).to.equal('Tab');
expect(code).to.equal('Tab');
expect(keyCode).to.equal(9);
expect(shiftKey).to.be.false();
expect(ctrlKey).to.be.false();
expect(altKey).to.be.true();
});
it('can send char events', async () => {
const keypress = once(ipcMain, 'keypress');
w.webContents.sendInputEvent({ type: 'keyDown', keyCode: 'A' });
w.webContents.sendInputEvent({ type: 'char', keyCode: 'A' });
const [, key, code, keyCode, shiftKey, ctrlKey, altKey] = await keypress;
expect(key).to.equal('a');
expect(code).to.equal('KeyA');
expect(keyCode).to.equal(65);
expect(shiftKey).to.be.false();
expect(ctrlKey).to.be.false();
expect(altKey).to.be.false();
});
it('can correctly convert accelerators to key codes', async () => {
const keyup = once(ipcMain, 'keyup');
w.webContents.sendInputEvent({ keyCode: 'Plus', type: 'char' });
w.webContents.sendInputEvent({ keyCode: 'Space', type: 'char' });
w.webContents.sendInputEvent({ keyCode: 'Plus', type: 'char' });
w.webContents.sendInputEvent({ keyCode: 'Space', type: 'char' });
w.webContents.sendInputEvent({ keyCode: 'Plus', type: 'char' });
w.webContents.sendInputEvent({ keyCode: 'Plus', type: 'keyUp' });
await keyup;
const inputText = await w.webContents.executeJavaScript('document.getElementById("input").value');
expect(inputText).to.equal('+ + +');
});
it('can send char events with modifiers', async () => {
const keypress = once(ipcMain, 'keypress');
w.webContents.sendInputEvent({ type: 'keyDown', keyCode: 'Z' });
w.webContents.sendInputEvent({ type: 'char', keyCode: 'Z', modifiers: ['shift', 'ctrl'] });
const [, key, code, keyCode, shiftKey, ctrlKey, altKey] = await keypress;
expect(key).to.equal('Z');
expect(code).to.equal('KeyZ');
expect(keyCode).to.equal(90);
expect(shiftKey).to.be.true();
expect(ctrlKey).to.be.true();
expect(altKey).to.be.false();
});
});
describe('insertCSS', () => {
afterEach(closeAllWindows);
it('supports inserting CSS', async () => {
const w = new BrowserWindow({ show: false });
w.loadURL('about:blank');
await w.webContents.insertCSS('body { background-repeat: round; }');
const result = await w.webContents.executeJavaScript('window.getComputedStyle(document.body).getPropertyValue("background-repeat")');
expect(result).to.equal('round');
});
it('supports removing inserted CSS', async () => {
const w = new BrowserWindow({ show: false });
w.loadURL('about:blank');
const key = await w.webContents.insertCSS('body { background-repeat: round; }');
await w.webContents.removeInsertedCSS(key);
const result = await w.webContents.executeJavaScript('window.getComputedStyle(document.body).getPropertyValue("background-repeat")');
expect(result).to.equal('repeat');
});
});
describe('inspectElement()', () => {
afterEach(closeAllWindows);
it('supports inspecting an element in the devtools', async () => {
const w = new BrowserWindow({ show: false });
w.loadURL('about:blank');
const event = once(w.webContents, 'devtools-opened');
w.webContents.inspectElement(10, 10);
await event;
});
});
describe('startDrag({file, icon})', () => {
it('throws errors for a missing file or a missing/empty icon', () => {
const w = new BrowserWindow({ show: false });
expect(() => {
w.webContents.startDrag({ icon: path.join(fixturesPath, 'assets', 'logo.png') } as any);
}).to.throw('Must specify either \'file\' or \'files\' option');
expect(() => {
w.webContents.startDrag({ file: __filename } as any);
}).to.throw('\'icon\' parameter is required');
expect(() => {
w.webContents.startDrag({ file: __filename, icon: path.join(fixturesPath, 'blank.png') });
}).to.throw(/Failed to load image from path (.+)/);
});
});
describe('focus APIs', () => {
describe('focus()', () => {
afterEach(closeAllWindows);
it('does not blur the focused window when the web contents is hidden', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { nodeIntegration: true } });
w.show();
await w.loadURL('about:blank');
w.focus();
const child = new BrowserWindow({ show: false });
child.loadURL('about:blank');
child.webContents.focus();
const currentFocused = w.isFocused();
const childFocused = child.isFocused();
child.close();
expect(currentFocused).to.be.true();
expect(childFocused).to.be.false();
});
it('does not crash when focusing a WebView webContents', async () => {
const w = new BrowserWindow({
show: false,
webPreferences: {
nodeIntegration: true,
webviewTag: true
}
});
w.show();
await w.loadURL('data:text/html,<webview src="data:text/html,hi"></webview>');
const wc = webContents.getAllWebContents().find((wc) => wc.getType() === 'webview')!;
expect(() => wc.focus()).to.not.throw();
});
});
const moveFocusToDevTools = async (win: BrowserWindow) => {
const devToolsOpened = once(win.webContents, 'devtools-opened');
win.webContents.openDevTools({ mode: 'right' });
await devToolsOpened;
win.webContents.devToolsWebContents!.focus();
};
describe('focus event', () => {
afterEach(closeAllWindows);
it('is triggered when web contents is focused', async () => {
const w = new BrowserWindow({ show: false });
await w.loadURL('about:blank');
await moveFocusToDevTools(w);
const focusPromise = once(w.webContents, 'focus');
w.webContents.focus();
await expect(focusPromise).to.eventually.be.fulfilled();
});
});
describe('blur event', () => {
afterEach(closeAllWindows);
it('is triggered when web contents is blurred', async () => {
const w = new BrowserWindow({ show: true });
await w.loadURL('about:blank');
w.webContents.focus();
const blurPromise = once(w.webContents, 'blur');
await moveFocusToDevTools(w);
await expect(blurPromise).to.eventually.be.fulfilled();
});
});
});
describe('getOSProcessId()', () => {
afterEach(closeAllWindows);
it('returns a valid process id', async () => {
const w = new BrowserWindow({ show: false });
expect(w.webContents.getOSProcessId()).to.equal(0);
await w.loadURL('about:blank');
expect(w.webContents.getOSProcessId()).to.be.above(0);
});
});
describe('getMediaSourceId()', () => {
afterEach(closeAllWindows);
it('returns a valid stream id', () => {
const w = new BrowserWindow({ show: false });
expect(w.webContents.getMediaSourceId(w.webContents)).to.be.a('string').that.is.not.empty();
});
});
describe('userAgent APIs', () => {
it('is not empty by default', () => {
const w = new BrowserWindow({ show: false });
const userAgent = w.webContents.getUserAgent();
expect(userAgent).to.be.a('string').that.is.not.empty();
});
it('can set the user agent (functions)', () => {
const w = new BrowserWindow({ show: false });
const userAgent = w.webContents.getUserAgent();
w.webContents.setUserAgent('my-user-agent');
expect(w.webContents.getUserAgent()).to.equal('my-user-agent');
w.webContents.setUserAgent(userAgent);
expect(w.webContents.getUserAgent()).to.equal(userAgent);
});
it('can set the user agent (properties)', () => {
const w = new BrowserWindow({ show: false });
const userAgent = w.webContents.userAgent;
w.webContents.userAgent = 'my-user-agent';
expect(w.webContents.userAgent).to.equal('my-user-agent');
w.webContents.userAgent = userAgent;
expect(w.webContents.userAgent).to.equal(userAgent);
});
});
describe('audioMuted APIs', () => {
it('can set the audio mute level (functions)', () => {
const w = new BrowserWindow({ show: false });
w.webContents.setAudioMuted(true);
expect(w.webContents.isAudioMuted()).to.be.true();
w.webContents.setAudioMuted(false);
expect(w.webContents.isAudioMuted()).to.be.false();
});
it('can set the audio mute level (functions)', () => {
const w = new BrowserWindow({ show: false });
w.webContents.audioMuted = true;
expect(w.webContents.audioMuted).to.be.true();
w.webContents.audioMuted = false;
expect(w.webContents.audioMuted).to.be.false();
});
});
describe('zoom api', () => {
const hostZoomMap: Record<string, number> = {
host1: 0.3,
host2: 0.7,
host3: 0.2
};
before(() => {
const protocol = session.defaultSession.protocol;
protocol.registerStringProtocol(standardScheme, (request, callback) => {
const response = `<script>
const {ipcRenderer} = require('electron')
ipcRenderer.send('set-zoom', window.location.hostname)
ipcRenderer.on(window.location.hostname + '-zoom-set', () => {
ipcRenderer.send(window.location.hostname + '-zoom-level')
})
</script>`;
callback({ data: response, mimeType: 'text/html' });
});
});
after(() => {
const protocol = session.defaultSession.protocol;
protocol.unregisterProtocol(standardScheme);
});
afterEach(closeAllWindows);
it('throws on an invalid zoomFactor', async () => {
const w = new BrowserWindow({ show: false });
await w.loadURL('about:blank');
expect(() => {
w.webContents.setZoomFactor(0.0);
}).to.throw(/'zoomFactor' must be a double greater than 0.0/);
expect(() => {
w.webContents.setZoomFactor(-2.0);
}).to.throw(/'zoomFactor' must be a double greater than 0.0/);
});
it('can set the correct zoom level (functions)', async () => {
const w = new BrowserWindow({ show: false });
try {
await w.loadURL('about:blank');
const zoomLevel = w.webContents.getZoomLevel();
expect(zoomLevel).to.eql(0.0);
w.webContents.setZoomLevel(0.5);
const newZoomLevel = w.webContents.getZoomLevel();
expect(newZoomLevel).to.eql(0.5);
} finally {
w.webContents.setZoomLevel(0);
}
});
it('can set the correct zoom level (properties)', async () => {
const w = new BrowserWindow({ show: false });
try {
await w.loadURL('about:blank');
const zoomLevel = w.webContents.zoomLevel;
expect(zoomLevel).to.eql(0.0);
w.webContents.zoomLevel = 0.5;
const newZoomLevel = w.webContents.zoomLevel;
expect(newZoomLevel).to.eql(0.5);
} finally {
w.webContents.zoomLevel = 0;
}
});
it('can set the correct zoom factor (functions)', async () => {
const w = new BrowserWindow({ show: false });
try {
await w.loadURL('about:blank');
const zoomFactor = w.webContents.getZoomFactor();
expect(zoomFactor).to.eql(1.0);
w.webContents.setZoomFactor(0.5);
const newZoomFactor = w.webContents.getZoomFactor();
expect(newZoomFactor).to.eql(0.5);
} finally {
w.webContents.setZoomFactor(1.0);
}
});
it('can set the correct zoom factor (properties)', async () => {
const w = new BrowserWindow({ show: false });
try {
await w.loadURL('about:blank');
const zoomFactor = w.webContents.zoomFactor;
expect(zoomFactor).to.eql(1.0);
w.webContents.zoomFactor = 0.5;
const newZoomFactor = w.webContents.zoomFactor;
expect(newZoomFactor).to.eql(0.5);
} finally {
w.webContents.zoomFactor = 1.0;
}
});
it('can persist zoom level across navigation', (done) => {
const w = new BrowserWindow({ show: false, webPreferences: { nodeIntegration: true, contextIsolation: false } });
let finalNavigation = false;
ipcMain.on('set-zoom', (e, host) => {
const zoomLevel = hostZoomMap[host];
if (!finalNavigation) w.webContents.zoomLevel = zoomLevel;
e.sender.send(`${host}-zoom-set`);
});
ipcMain.on('host1-zoom-level', (e) => {
try {
const zoomLevel = e.sender.getZoomLevel();
const expectedZoomLevel = hostZoomMap.host1;
expect(zoomLevel).to.equal(expectedZoomLevel);
if (finalNavigation) {
done();
} else {
w.loadURL(`${standardScheme}://host2`);
}
} catch (e) {
done(e);
}
});
ipcMain.once('host2-zoom-level', (e) => {
try {
const zoomLevel = e.sender.getZoomLevel();
const expectedZoomLevel = hostZoomMap.host2;
expect(zoomLevel).to.equal(expectedZoomLevel);
finalNavigation = true;
w.webContents.goBack();
} catch (e) {
done(e);
}
});
w.loadURL(`${standardScheme}://host1`);
});
it('can propagate zoom level across same session', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { nodeIntegration: true } });
const w2 = new BrowserWindow({ show: false });
defer(() => {
w2.setClosable(true);
w2.close();
});
await w.loadURL(`${standardScheme}://host3`);
w.webContents.zoomLevel = hostZoomMap.host3;
await w2.loadURL(`${standardScheme}://host3`);
const zoomLevel1 = w.webContents.zoomLevel;
expect(zoomLevel1).to.equal(hostZoomMap.host3);
const zoomLevel2 = w2.webContents.zoomLevel;
expect(zoomLevel1).to.equal(zoomLevel2);
});
it('cannot propagate zoom level across different session', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { nodeIntegration: true } });
const w2 = new BrowserWindow({
show: false,
webPreferences: {
partition: 'temp'
}
});
const protocol = w2.webContents.session.protocol;
protocol.registerStringProtocol(standardScheme, (request, callback) => {
callback('hello');
});
defer(() => {
w2.setClosable(true);
w2.close();
protocol.unregisterProtocol(standardScheme);
});
await w.loadURL(`${standardScheme}://host3`);
w.webContents.zoomLevel = hostZoomMap.host3;
await w2.loadURL(`${standardScheme}://host3`);
const zoomLevel1 = w.webContents.zoomLevel;
expect(zoomLevel1).to.equal(hostZoomMap.host3);
const zoomLevel2 = w2.webContents.zoomLevel;
expect(zoomLevel2).to.equal(0);
expect(zoomLevel1).to.not.equal(zoomLevel2);
});
it('can persist when it contains iframe', (done) => {
const w = new BrowserWindow({ show: false });
let server = http.createServer((req, res) => {
setTimeout(200).then(() => {
res.end();
});
});
defer(() => {
server.close();
server = null as unknown as http.Server;
});
listen(server).then(({ url }) => {
const content = `<iframe src=${url}></iframe>`;
w.webContents.on('did-frame-finish-load', (e, isMainFrame) => {
if (!isMainFrame) {
try {
const zoomLevel = w.webContents.zoomLevel;
expect(zoomLevel).to.equal(2.0);
w.webContents.zoomLevel = 0;
done();
} catch (e) {
done(e);
}
}
});
w.webContents.on('dom-ready', () => {
w.webContents.zoomLevel = 2.0;
});
w.loadURL(`data:text/html,${content}`);
});
});
it('cannot propagate when used with webframe', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { nodeIntegration: true, contextIsolation: false } });
const w2 = new BrowserWindow({ show: false });
const temporaryZoomSet = once(ipcMain, 'temporary-zoom-set');
w.loadFile(path.join(fixturesPath, 'pages', 'webframe-zoom.html'));
await temporaryZoomSet;
const finalZoomLevel = w.webContents.getZoomLevel();
await w2.loadFile(path.join(fixturesPath, 'pages', 'c.html'));
const zoomLevel1 = w.webContents.zoomLevel;
const zoomLevel2 = w2.webContents.zoomLevel;
w2.setClosable(true);
w2.close();
expect(zoomLevel1).to.equal(finalZoomLevel);
expect(zoomLevel2).to.equal(0);
expect(zoomLevel1).to.not.equal(zoomLevel2);
});
describe('with unique domains', () => {
let server: http.Server;
let serverUrl: string;
let crossSiteUrl: string;
before(async () => {
server = http.createServer((req, res) => {
setTimeout().then(() => res.end('hey'));
});
serverUrl = (await listen(server)).url;
crossSiteUrl = serverUrl.replace('127.0.0.1', 'localhost');
});
after(() => {
server.close();
server = null as unknown as http.Server;
});
it('cannot persist zoom level after navigation with webFrame', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { nodeIntegration: true, contextIsolation: false } });
const source = `
const {ipcRenderer, webFrame} = require('electron')
webFrame.setZoomLevel(0.6)
ipcRenderer.send('zoom-level-set', webFrame.getZoomLevel())
`;
const zoomLevelPromise = once(ipcMain, 'zoom-level-set');
await w.loadURL(serverUrl);
await w.webContents.executeJavaScript(source);
let [, zoomLevel] = await zoomLevelPromise;
expect(zoomLevel).to.equal(0.6);
const loadPromise = once(w.webContents, 'did-finish-load');
await w.loadURL(crossSiteUrl);
await loadPromise;
zoomLevel = w.webContents.zoomLevel;
expect(zoomLevel).to.equal(0);
});
});
});
});

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spec/api-web-contents3-spec.ts Normal file
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import { BrowserWindow, webContents, app } from 'electron/main';
import { expect } from 'chai';
import { once } from 'node:events';
import * as fs from 'node:fs';
import * as http from 'node:http';
import { AddressInfo } from 'node:net';
import * as path from 'node:path';
import { setTimeout } from 'node:timers/promises';
import { ifdescribe, defer, listen } from './lib/spec-helpers';
import { closeAllWindows } from './lib/window-helpers';
const fixturesPath = path.resolve(__dirname, 'fixtures');
const features = process._linkedBinding('electron_common_features');
describe('webContents3 module', () => {
describe('webrtc ip policy api', () => {
afterEach(closeAllWindows);
it('can set and get webrtc ip policies', () => {
const w = new BrowserWindow({ show: false });
const policies = [
'default',
'default_public_interface_only',
'default_public_and_private_interfaces',
'disable_non_proxied_udp'
] as const;
for (const policy of policies) {
w.webContents.setWebRTCIPHandlingPolicy(policy);
expect(w.webContents.getWebRTCIPHandlingPolicy()).to.equal(policy);
}
});
});
describe('webrtc udp port range policy api', () => {
let w: BrowserWindow;
beforeEach(() => {
w = new BrowserWindow({ show: false });
});
afterEach(closeAllWindows);
it('check default webrtc udp port range is { min: 0, max: 0 }', () => {
const settings = w.webContents.getWebRTCUDPPortRange();
expect(settings).to.deep.equal({ min: 0, max: 0 });
});
it('can set and get webrtc udp port range policy with correct arguments', () => {
w.webContents.setWebRTCUDPPortRange({ min: 1, max: 65535 });
const settings = w.webContents.getWebRTCUDPPortRange();
expect(settings).to.deep.equal({ min: 1, max: 65535 });
});
it('can not set webrtc udp port range policy with invalid arguments', () => {
expect(() => {
w.webContents.setWebRTCUDPPortRange({ min: 0, max: 65535 });
}).to.throw("'min' and 'max' must be in the (0, 65535] range or [0, 0]");
expect(() => {
w.webContents.setWebRTCUDPPortRange({ min: 1, max: 65536 });
}).to.throw("'min' and 'max' must be in the (0, 65535] range or [0, 0]");
expect(() => {
w.webContents.setWebRTCUDPPortRange({ min: 60000, max: 56789 });
}).to.throw("'max' must be greater than or equal to 'min'");
});
it('can reset webrtc udp port range policy to default with { min: 0, max: 0 }', () => {
w.webContents.setWebRTCUDPPortRange({ min: 1, max: 65535 });
const settings = w.webContents.getWebRTCUDPPortRange();
expect(settings).to.deep.equal({ min: 1, max: 65535 });
w.webContents.setWebRTCUDPPortRange({ min: 0, max: 0 });
const defaultSetting = w.webContents.getWebRTCUDPPortRange();
expect(defaultSetting).to.deep.equal({ min: 0, max: 0 });
});
});
describe('opener api', () => {
afterEach(closeAllWindows);
it('can get opener with window.open()', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { sandbox: true } });
await w.loadURL('about:blank');
const childPromise = once(w.webContents, 'did-create-window') as Promise<[BrowserWindow, Electron.DidCreateWindowDetails]>;
w.webContents.executeJavaScript('window.open("about:blank")', true);
const [childWindow] = await childPromise;
expect(childWindow.webContents.opener).to.equal(w.webContents.mainFrame);
});
it('has no opener when using "noopener"', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { sandbox: true } });
await w.loadURL('about:blank');
const childPromise = once(w.webContents, 'did-create-window') as Promise<[BrowserWindow, Electron.DidCreateWindowDetails]>;
w.webContents.executeJavaScript('window.open("about:blank", undefined, "noopener")', true);
const [childWindow] = await childPromise;
expect(childWindow.webContents.opener).to.be.null();
});
it('can get opener with a[target=_blank][rel=opener]', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { sandbox: true } });
await w.loadURL('about:blank');
const childPromise = once(w.webContents, 'did-create-window') as Promise<[BrowserWindow, Electron.DidCreateWindowDetails]>;
w.webContents.executeJavaScript(`(function() {
const a = document.createElement('a');
a.target = '_blank';
a.rel = 'opener';
a.href = 'about:blank';
a.click();
}())`, true);
const [childWindow] = await childPromise;
expect(childWindow.webContents.opener).to.equal(w.webContents.mainFrame);
});
it('has no opener with a[target=_blank][rel=noopener]', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { sandbox: true } });
await w.loadURL('about:blank');
const childPromise = once(w.webContents, 'did-create-window') as Promise<[BrowserWindow, Electron.DidCreateWindowDetails]>;
w.webContents.executeJavaScript(`(function() {
const a = document.createElement('a');
a.target = '_blank';
a.rel = 'noopener';
a.href = 'about:blank';
a.click();
}())`, true);
const [childWindow] = await childPromise;
expect(childWindow.webContents.opener).to.be.null();
});
});
describe('render view deleted events', () => {
let server: http.Server;
let serverUrl: string;
let crossSiteUrl: string;
before(async () => {
server = http.createServer((req, res) => {
const respond = () => {
if (req.url === '/redirect-cross-site') {
res.setHeader('Location', `${crossSiteUrl}/redirected`);
res.statusCode = 302;
res.end();
} else if (req.url === '/redirected') {
res.end('<html><script>window.localStorage</script></html>');
} else if (req.url === '/first-window-open') {
res.end(`<html><script>window.open('${serverUrl}/second-window-open', 'first child');</script></html>`);
} else if (req.url === '/second-window-open') {
res.end('<html><script>window.open(\'wrong://url\', \'second child\');</script></html>');
} else {
res.end();
}
};
setTimeout().then(respond);
});
serverUrl = (await listen(server)).url;
crossSiteUrl = serverUrl.replace('127.0.0.1', 'localhost');
});
after(() => {
server.close();
server = null as unknown as http.Server;
});
afterEach(closeAllWindows);
it('does not emit current-render-view-deleted when speculative RVHs are deleted', async () => {
const w = new BrowserWindow({ show: false });
let currentRenderViewDeletedEmitted = false;
const renderViewDeletedHandler = () => {
currentRenderViewDeletedEmitted = true;
};
w.webContents.on('current-render-view-deleted' as any, renderViewDeletedHandler);
w.webContents.on('did-finish-load', () => {
w.webContents.removeListener('current-render-view-deleted' as any, renderViewDeletedHandler);
w.close();
});
const destroyed = once(w.webContents, 'destroyed');
w.loadURL(`${serverUrl}/redirect-cross-site`);
await destroyed;
expect(currentRenderViewDeletedEmitted).to.be.false('current-render-view-deleted was emitted');
});
it('does not emit current-render-view-deleted when speculative RVHs are deleted', async () => {
const parentWindow = new BrowserWindow({ show: false });
let currentRenderViewDeletedEmitted = false;
let childWindow: BrowserWindow | null = null;
const destroyed = once(parentWindow.webContents, 'destroyed');
const renderViewDeletedHandler = () => {
currentRenderViewDeletedEmitted = true;
};
const childWindowCreated = new Promise<void>((resolve) => {
app.once('browser-window-created', (event, window) => {
childWindow = window;
window.webContents.on('current-render-view-deleted' as any, renderViewDeletedHandler);
resolve();
});
});
parentWindow.loadURL(`${serverUrl}/first-window-open`);
await childWindowCreated;
childWindow!.webContents.removeListener('current-render-view-deleted' as any, renderViewDeletedHandler);
parentWindow.close();
await destroyed;
expect(currentRenderViewDeletedEmitted).to.be.false('child window was destroyed');
});
it('emits current-render-view-deleted if the current RVHs are deleted', async () => {
const w = new BrowserWindow({ show: false });
let currentRenderViewDeletedEmitted = false;
w.webContents.on('current-render-view-deleted' as any, () => {
currentRenderViewDeletedEmitted = true;
});
w.webContents.on('did-finish-load', () => {
w.close();
});
const destroyed = once(w.webContents, 'destroyed');
w.loadURL(`${serverUrl}/redirect-cross-site`);
await destroyed;
expect(currentRenderViewDeletedEmitted).to.be.true('current-render-view-deleted wasn\'t emitted');
});
it('emits render-view-deleted if any RVHs are deleted', async () => {
const w = new BrowserWindow({ show: false });
let rvhDeletedCount = 0;
w.webContents.on('render-view-deleted' as any, () => {
rvhDeletedCount++;
});
w.webContents.on('did-finish-load', () => {
w.close();
});
const destroyed = once(w.webContents, 'destroyed');
w.loadURL(`${serverUrl}/redirect-cross-site`);
await destroyed;
const expectedRenderViewDeletedEventCount = 1;
expect(rvhDeletedCount).to.equal(expectedRenderViewDeletedEventCount, 'render-view-deleted wasn\'t emitted the expected nr. of times');
});
});
describe('setIgnoreMenuShortcuts(ignore)', () => {
afterEach(closeAllWindows);
it('does not throw', () => {
const w = new BrowserWindow({ show: false });
expect(() => {
w.webContents.setIgnoreMenuShortcuts(true);
w.webContents.setIgnoreMenuShortcuts(false);
}).to.not.throw();
});
});
const crashPrefs = [
{
nodeIntegration: true
},
{
sandbox: true
}
];
const nicePrefs = (o: any) => {
let s = '';
for (const key of Object.keys(o)) {
s += `${key}=${o[key]}, `;
}
return `(${s.slice(0, s.length - 2)})`;
};
for (const prefs of crashPrefs) {
describe(`crash with webPreferences ${nicePrefs(prefs)}`, () => {
let w: BrowserWindow;
beforeEach(async () => {
w = new BrowserWindow({ show: false, webPreferences: { nodeIntegration: true } });
await w.loadURL('about:blank');
});
afterEach(closeAllWindows);
it('isCrashed() is false by default', () => {
expect(w.webContents.isCrashed()).to.equal(false);
});
it('forcefullyCrashRenderer() crashes the process with reason=killed||crashed', async () => {
expect(w.webContents.isCrashed()).to.equal(false);
const crashEvent = once(w.webContents, 'render-process-gone') as Promise<[any, Electron.RenderProcessGoneDetails]>;
w.webContents.forcefullyCrashRenderer();
const [, details] = await crashEvent;
expect(details.reason === 'killed' || details.reason === 'crashed').to.equal(true, 'reason should be killed || crashed');
expect(w.webContents.isCrashed()).to.equal(true);
});
it('a crashed process is recoverable with reload()', async () => {
expect(w.webContents.isCrashed()).to.equal(false);
w.webContents.forcefullyCrashRenderer();
w.webContents.reload();
expect(w.webContents.isCrashed()).to.equal(false);
});
});
}
// Destroying webContents in its event listener is going to crash when
// Electron is built in Debug mode.
describe('destroy()', () => {
let server: http.Server;
let serverUrl: string;
before((done) => {
server = http.createServer((request, response) => {
switch (request.url) {
case '/net-error':
response.destroy();
break;
case '/200':
response.end();
break;
default:
done(new Error('unsupported endpoint'));
}
});
listen(server).then(({ url }) => {
serverUrl = url;
done();
});
});
after(() => {
server.close();
server = null as unknown as http.Server;
});
const events = [
{ name: 'did-start-loading', url: '/200' },
{ name: 'dom-ready', url: '/200' },
{ name: 'did-stop-loading', url: '/200' },
{ name: 'did-finish-load', 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: '/200' },
{ name: 'did-fail-load', url: '/net-error' }
];
for (const e of events) {
it(`should not crash when invoked synchronously inside ${e.name} handler`, async function () {
// This test is flaky on Windows CI and we don't know why, but the
// purpose of this test is to make sure Electron does not crash so it
// is fine to retry this test for a few times.
this.retries(3);
const contents = (webContents as typeof ElectronInternal.WebContents).create();
const originalEmit = contents.emit.bind(contents);
contents.emit = (...args) => { return originalEmit(...args); };
contents.once(e.name as any, () => contents.destroy());
const destroyed = once(contents, 'destroyed');
contents.loadURL(serverUrl + e.url);
await destroyed;
});
}
});
describe('did-change-theme-color event', () => {
afterEach(closeAllWindows);
it('is triggered with correct theme color', (done) => {
const w = new BrowserWindow({ show: true });
let count = 0;
w.webContents.on('did-change-theme-color', (e, color) => {
try {
if (count === 0) {
count += 1;
expect(color).to.equal('#FFEEDD');
w.loadFile(path.join(fixturesPath, 'pages', 'base-page.html'));
} else if (count === 1) {
expect(color).to.be.null();
done();
}
} catch (e) {
done(e);
}
});
w.loadFile(path.join(fixturesPath, 'pages', 'theme-color.html'));
});
});
describe('console-message event', () => {
afterEach(closeAllWindows);
it('is triggered with correct log message', (done) => {
const w = new BrowserWindow({ show: true });
w.webContents.on('console-message', (e) => {
// Don't just assert as Chromium might emit other logs that we should ignore.
if (e.message === 'a') {
done();
}
});
w.loadFile(path.join(fixturesPath, 'pages', 'a.html'));
});
});
describe('ipc-message event', () => {
afterEach(closeAllWindows);
it('emits when the renderer process sends an asynchronous message', async () => {
const w = new BrowserWindow({ show: true, webPreferences: { nodeIntegration: true, contextIsolation: false } });
await w.webContents.loadURL('about:blank');
w.webContents.executeJavaScript(`
require('electron').ipcRenderer.send('message', 'Hello World!')
`);
const [, channel, message] = await once(w.webContents, 'ipc-message');
expect(channel).to.equal('message');
expect(message).to.equal('Hello World!');
});
});
describe('ipc-message-sync event', () => {
afterEach(closeAllWindows);
it('emits when the renderer process sends a synchronous message', async () => {
const w = new BrowserWindow({ show: true, webPreferences: { nodeIntegration: true, contextIsolation: false } });
await w.webContents.loadURL('about:blank');
const promise: Promise<[string, string]> = new Promise(resolve => {
w.webContents.once('ipc-message-sync', (event, channel, arg) => {
event.returnValue = 'foobar';
resolve([channel, arg]);
});
});
const result = await w.webContents.executeJavaScript(`
require('electron').ipcRenderer.sendSync('message', 'Hello World!')
`);
const [channel, message] = await promise;
expect(channel).to.equal('message');
expect(message).to.equal('Hello World!');
expect(result).to.equal('foobar');
});
});
describe('referrer', () => {
afterEach(closeAllWindows);
it('propagates referrer information to new target=_blank windows', (done) => {
const w = new BrowserWindow({ show: false });
let server = http.createServer((req, res) => {
if (req.url === '/should_have_referrer') {
try {
expect(req.headers.referer).to.equal(`http://127.0.0.1:${(server.address() as AddressInfo).port}/`);
return done();
} catch (e) {
return done(e);
}
}
res.end('<a id="a" href="/should_have_referrer" target="_blank">link</a>');
});
defer(() => {
server.close();
server = null as unknown as http.Server;
});
listen(server).then(({ url }) => {
w.webContents.once('did-finish-load', () => {
w.webContents.setWindowOpenHandler(details => {
expect(details.referrer.url).to.equal(url + '/');
expect(details.referrer.policy).to.equal('strict-origin-when-cross-origin');
return { action: 'allow' };
});
w.webContents.executeJavaScript('a.click()');
});
w.loadURL(url);
});
});
it('propagates referrer information to windows opened with window.open', (done) => {
const w = new BrowserWindow({ show: false });
let server = http.createServer((req, res) => {
if (req.url === '/should_have_referrer') {
try {
expect(req.headers.referer).to.equal(`http://127.0.0.1:${(server.address() as AddressInfo).port}/`);
return done();
} catch (e) {
return done(e);
}
}
res.end('');
});
defer(() => {
server.close();
server = null as unknown as http.Server;
});
listen(server).then(({ url }) => {
w.webContents.once('did-finish-load', () => {
w.webContents.setWindowOpenHandler(details => {
expect(details.referrer.url).to.equal(url + '/');
expect(details.referrer.policy).to.equal('strict-origin-when-cross-origin');
return { action: 'allow' };
});
w.webContents.executeJavaScript('window.open(location.href + "should_have_referrer")');
});
w.loadURL(url);
});
});
});
describe('webframe messages in sandboxed contents', () => {
afterEach(closeAllWindows);
it('responds to executeJavaScript', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { sandbox: true } });
await w.loadURL('about:blank');
const result = await w.webContents.executeJavaScript('37 + 5');
expect(result).to.equal(42);
});
});
describe('preload-error event', () => {
afterEach(closeAllWindows);
const generateSpecs = (description: string, sandbox: boolean) => {
describe(description, () => {
it('is triggered when unhandled exception is thrown', async () => {
const preload = path.join(fixturesPath, 'module', 'preload-error-exception.js');
const w = new BrowserWindow({
show: false,
webPreferences: {
sandbox,
preload
}
});
const promise = once(w.webContents, 'preload-error') as Promise<[any, string, Error]>;
w.loadURL('about:blank');
const [, preloadPath, error] = await promise;
expect(preloadPath).to.equal(preload);
expect(error.message).to.equal('Hello World!');
});
it('is triggered on syntax errors', async () => {
const preload = path.join(fixturesPath, 'module', 'preload-error-syntax.js');
const w = new BrowserWindow({
show: false,
webPreferences: {
sandbox,
preload
}
});
const promise = once(w.webContents, 'preload-error') as Promise<[any, string, Error]>;
w.loadURL('about:blank');
const [, preloadPath, error] = await promise;
expect(preloadPath).to.equal(preload);
expect(error.message).to.equal('foobar is not defined');
});
it('is triggered when preload script loading fails', async () => {
const preload = path.join(fixturesPath, 'module', 'preload-invalid.js');
const w = new BrowserWindow({
show: false,
webPreferences: {
sandbox,
preload
}
});
const promise = once(w.webContents, 'preload-error') as Promise<[any, string, Error]>;
w.loadURL('about:blank');
const [, preloadPath, error] = await promise;
expect(preloadPath).to.equal(preload);
expect(error.message).to.contain('preload-invalid.js');
});
});
};
generateSpecs('without sandbox', false);
generateSpecs('with sandbox', true);
});
describe('takeHeapSnapshot()', () => {
afterEach(closeAllWindows);
it('works with sandboxed renderers', async () => {
const w = new BrowserWindow({
show: false,
webPreferences: {
sandbox: true
}
});
await w.loadURL('about:blank');
const filePath = path.join(app.getPath('temp'), 'test.heapsnapshot');
const cleanup = () => {
try {
fs.unlinkSync(filePath);
} catch {
// ignore error
}
};
try {
await w.webContents.takeHeapSnapshot(filePath);
const stats = fs.statSync(filePath);
expect(stats.size).not.to.be.equal(0);
} finally {
cleanup();
}
});
it('fails with invalid file path', async () => {
const w = new BrowserWindow({
show: false,
webPreferences: {
sandbox: true
}
});
await w.loadURL('about:blank');
const badPath = path.join('i', 'am', 'a', 'super', 'bad', 'path');
const promise = w.webContents.takeHeapSnapshot(badPath);
return expect(promise).to.be.eventually.rejectedWith(Error, `Failed to take heap snapshot with invalid file path ${badPath}`);
});
it('fails with invalid render process', async () => {
const w = new BrowserWindow({
show: false,
webPreferences: {
sandbox: true
}
});
const filePath = path.join(app.getPath('temp'), 'test.heapsnapshot');
w.webContents.destroy();
const promise = w.webContents.takeHeapSnapshot(filePath);
return expect(promise).to.be.eventually.rejectedWith(Error, 'Failed to take heap snapshot with nonexistent render frame');
});
});
describe('setBackgroundThrottling()', () => {
afterEach(closeAllWindows);
it('does not crash when allowing', () => {
const w = new BrowserWindow({ show: false });
w.webContents.setBackgroundThrottling(true);
});
it('does not crash when called via BrowserWindow', () => {
const w = new BrowserWindow({ show: false });
w.setBackgroundThrottling(true);
});
it('does not crash when disallowing', () => {
const w = new BrowserWindow({ show: false, webPreferences: { backgroundThrottling: true } });
w.webContents.setBackgroundThrottling(false);
});
});
describe('getBackgroundThrottling()', () => {
afterEach(closeAllWindows);
it('works via getter', () => {
const w = new BrowserWindow({ show: false });
w.webContents.setBackgroundThrottling(false);
expect(w.webContents.getBackgroundThrottling()).to.equal(false);
w.webContents.setBackgroundThrottling(true);
expect(w.webContents.getBackgroundThrottling()).to.equal(true);
});
it('works via property', () => {
const w = new BrowserWindow({ show: false });
w.webContents.backgroundThrottling = false;
expect(w.webContents.backgroundThrottling).to.equal(false);
w.webContents.backgroundThrottling = true;
expect(w.webContents.backgroundThrottling).to.equal(true);
});
it('works via BrowserWindow', () => {
const w = new BrowserWindow({ show: false });
w.setBackgroundThrottling(false);
expect(w.getBackgroundThrottling()).to.equal(false);
w.setBackgroundThrottling(true);
expect(w.getBackgroundThrottling()).to.equal(true);
});
});
ifdescribe(features.isPrintingEnabled())('getPrintersAsync()', () => {
afterEach(closeAllWindows);
it('can get printer list', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { sandbox: true } });
await w.loadURL('about:blank');
const printers = await w.webContents.getPrintersAsync();
expect(printers).to.be.an('array');
});
});
});

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import { BrowserWindow, ipcMain, webContents, session, app, WebContents } from 'electron/main';
import { expect } from 'chai';
import * as cp from 'node:child_process';
import { once } from 'node:events';
import * as fs from 'node:fs';
import * as http from 'node:http';
import * as os from 'node:os';
import * as path from 'node:path';
import * as url from 'node:url';
import { ifdescribe, defer, listen } from './lib/spec-helpers';
import { closeAllWindows } from './lib/window-helpers';
const fixturesPath = path.resolve(__dirname, 'fixtures');
const features = process._linkedBinding('electron_common_features');
describe('webContents4 module', () => {
ifdescribe(features.isPrintingEnabled())('printToPDF()', () => {
const readPDF = async (data: any) => {
const tmpDir = await fs.promises.mkdtemp(path.resolve(os.tmpdir(), 'e-spec-printtopdf-'));
const pdfPath = path.resolve(tmpDir, 'test.pdf');
await fs.promises.writeFile(pdfPath, data);
const pdfReaderPath = path.resolve(fixturesPath, 'api', 'pdf-reader.mjs');
const result = cp.spawn(process.execPath, [pdfReaderPath, pdfPath], {
stdio: 'pipe'
});
const stdout: Buffer[] = [];
const stderr: Buffer[] = [];
result.stdout.on('data', (chunk) => stdout.push(chunk));
result.stderr.on('data', (chunk) => stderr.push(chunk));
const [code, signal] = await new Promise<[number | null, NodeJS.Signals | null]>((resolve) => {
result.on('close', (code, signal) => {
resolve([code, signal]);
});
});
await fs.promises.rm(tmpDir, { force: true, recursive: true });
if (code !== 0) {
const errMsg = Buffer.concat(stderr).toString().trim();
console.error(`Error parsing PDF file, exit code was ${code}; signal was ${signal}, error: ${errMsg}`);
}
return JSON.parse(Buffer.concat(stdout).toString().trim());
};
let w: BrowserWindow;
const containsText = (items: any[], text: RegExp) => {
return items.some(({ str }: { str: string }) => str.match(text));
};
beforeEach(() => {
w = new BrowserWindow({
show: false,
webPreferences: {
sandbox: true
}
});
});
afterEach(closeAllWindows);
it('rejects on incorrectly typed parameters', async () => {
const badTypes = {
landscape: [],
displayHeaderFooter: '123',
printBackground: 2,
scale: 'not-a-number',
pageSize: 'IAmAPageSize',
margins: 'terrible',
pageRanges: { oops: 'im-not-the-right-key' },
headerTemplate: [1, 2, 3],
footerTemplate: [4, 5, 6],
preferCSSPageSize: 'no',
generateTaggedPDF: 'wtf',
generateDocumentOutline: [7, 8, 9]
};
await w.loadURL('data:text/html,<h1>Hello, World!</h1>');
// These will hard crash in Chromium unless we type-check
for (const [key, value] of Object.entries(badTypes)) {
const param = { [key]: value };
await expect(w.webContents.printToPDF(param)).to.eventually.be.rejected();
}
});
it('rejects when margins exceed physical page size', async () => {
await w.loadURL('data:text/html,<h1>Hello, World!</h1>');
await expect(w.webContents.printToPDF({
pageSize: 'Letter',
margins: {
top: 100,
bottom: 100,
left: 5,
right: 5
}
})).to.eventually.be.rejectedWith('margins must be less than or equal to pageSize');
});
it('does not crash when called multiple times in parallel', async () => {
await w.loadURL('data:text/html,<h1>Hello, World!</h1>');
const promises = [];
for (let i = 0; i < 3; i++) {
promises.push(w.webContents.printToPDF({}));
}
const results = await Promise.all(promises);
for (const data of results) {
expect(data).to.be.an.instanceof(Buffer).that.is.not.empty();
}
});
it('does not crash when called multiple times in sequence', async () => {
await w.loadURL('data:text/html,<h1>Hello, World!</h1>');
const results = [];
for (let i = 0; i < 3; i++) {
const result = await w.webContents.printToPDF({});
results.push(result);
}
for (const data of results) {
expect(data).to.be.an.instanceof(Buffer).that.is.not.empty();
}
});
it('can print a PDF with default settings', async () => {
await w.loadURL('data:text/html,<h1>Hello, World!</h1>');
const data = await w.webContents.printToPDF({});
expect(data).to.be.an.instanceof(Buffer).that.is.not.empty();
});
type PageSizeString = Exclude<Required<Electron.PrintToPDFOptions>['pageSize'], Electron.Size>;
it('with custom page sizes', async () => {
const paperFormats: Record<PageSizeString, ElectronInternal.PageSize> = {
Letter: { width: 8.5, height: 11 },
Legal: { width: 8.5, height: 14 },
Tabloid: { width: 11, height: 17 },
Ledger: { width: 17, height: 11 },
A0: { width: 33.1, height: 46.8 },
A1: { width: 23.4, height: 33.1 },
A2: { width: 16.54, height: 23.4 },
A3: { width: 11.7, height: 16.54 },
A4: { width: 8.27, height: 11.7 },
A5: { width: 5.83, height: 8.27 },
A6: { width: 4.13, height: 5.83 }
};
await w.loadFile(path.join(__dirname, 'fixtures', 'api', 'print-to-pdf-small.html'));
for (const format of Object.keys(paperFormats) as PageSizeString[]) {
const data = await w.webContents.printToPDF({ pageSize: format });
const pdfInfo = await readPDF(data);
// page.view is [top, left, width, height].
const width = pdfInfo.view[2] / 72;
const height = pdfInfo.view[3] / 72;
const approxEq = (a: number, b: number, epsilon = 0.01) => Math.abs(a - b) <= epsilon;
expect(approxEq(width, paperFormats[format].width)).to.be.true();
expect(approxEq(height, paperFormats[format].height)).to.be.true();
}
});
it('with custom header and footer', async () => {
await w.loadFile(path.join(fixturesPath, 'api', 'print-to-pdf-small.html'));
const data = await w.webContents.printToPDF({
displayHeaderFooter: true,
headerTemplate: '<div>I\'m a PDF header</div>',
footerTemplate: '<div>I\'m a PDF footer</div>'
});
const pdfInfo = await readPDF(data);
expect(containsText(pdfInfo.textContent, /I'm a PDF header/)).to.be.true();
expect(containsText(pdfInfo.textContent, /I'm a PDF footer/)).to.be.true();
});
it('in landscape mode', async () => {
await w.loadFile(path.join(__dirname, 'fixtures', 'api', 'print-to-pdf-small.html'));
const data = await w.webContents.printToPDF({ landscape: true });
const pdfInfo = await readPDF(data);
// page.view is [top, left, width, height].
const width = pdfInfo.view[2];
const height = pdfInfo.view[3];
expect(width).to.be.greaterThan(height);
});
it('with custom page ranges', async () => {
await w.loadFile(path.join(__dirname, 'fixtures', 'api', 'print-to-pdf-large.html'));
const data = await w.webContents.printToPDF({
pageRanges: '1-3',
landscape: true
});
const pdfInfo = await readPDF(data);
// Check that correct # of pages are rendered.
expect(pdfInfo.numPages).to.equal(3);
});
it('does not tag PDFs by default', async () => {
await w.loadFile(path.join(__dirname, 'fixtures', 'api', 'print-to-pdf-small.html'));
const data = await w.webContents.printToPDF({});
const pdfInfo = await readPDF(data);
expect(pdfInfo.markInfo).to.be.null();
});
it('can generate tag data for PDFs', async () => {
await w.loadFile(path.join(__dirname, 'fixtures', 'api', 'print-to-pdf-small.html'));
const data = await w.webContents.printToPDF({ generateTaggedPDF: true });
const pdfInfo = await readPDF(data);
expect(pdfInfo.markInfo).to.deep.equal({
Marked: true,
UserProperties: false,
Suspects: false
});
});
it('from an existing pdf document', async () => {
const pdfPath = path.join(fixturesPath, 'cat.pdf');
const readyToPrint = once(w.webContents, '-pdf-ready-to-print');
await w.loadFile(pdfPath);
await readyToPrint;
const data = await w.webContents.printToPDF({});
const pdfInfo = await readPDF(data);
expect(pdfInfo.numPages).to.equal(2);
expect(containsText(pdfInfo.textContent, /Cat: The Ideal Pet/)).to.be.true();
});
it('from an existing pdf document in a WebView', async () => {
const win = new BrowserWindow({
show: false,
webPreferences: {
webviewTag: true
}
});
await win.loadURL('about:blank');
const webContentsCreated = once(app, 'web-contents-created') as Promise<[any, WebContents]>;
const src = url.format({
pathname: `${fixturesPath.replaceAll('\\', '/')}/cat.pdf`,
protocol: 'file',
slashes: true
});
await win.webContents.executeJavaScript(`
new Promise((resolve, reject) => {
const webview = new WebView()
webview.setAttribute('src', '${src}')
document.body.appendChild(webview)
webview.addEventListener('did-finish-load', () => {
resolve()
})
})
`);
const [, webContents] = await webContentsCreated;
await once(webContents, '-pdf-ready-to-print');
const data = await webContents.printToPDF({});
const pdfInfo = await readPDF(data);
expect(pdfInfo.numPages).to.equal(2);
expect(containsText(pdfInfo.textContent, /Cat: The Ideal Pet/)).to.be.true();
});
});
describe('PictureInPicture video', () => {
afterEach(closeAllWindows);
it('works as expected', async function () {
const w = new BrowserWindow({ webPreferences: { sandbox: true } });
// TODO(codebytere): figure out why this workaround is needed and remove.
// It is not germane to the actual test.
await w.loadFile(path.join(fixturesPath, 'blank.html'));
await w.loadFile(path.join(fixturesPath, 'api', 'picture-in-picture.html'));
await w.webContents.executeJavaScript('document.createElement(\'video\').canPlayType(\'video/webm; codecs="vp8.0"\')', true);
const result = await w.webContents.executeJavaScript('runTest(true)', true);
expect(result).to.be.true();
});
});
describe('Shared Workers', () => {
afterEach(closeAllWindows);
it('can get multiple shared workers', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { nodeIntegration: true, contextIsolation: false } });
const ready = once(ipcMain, 'ready');
w.loadFile(path.join(fixturesPath, 'api', 'shared-worker', 'shared-worker.html'));
await ready;
const sharedWorkers = w.webContents.getAllSharedWorkers();
expect(sharedWorkers).to.have.lengthOf(2);
expect(sharedWorkers[0].url).to.contain('shared-worker');
expect(sharedWorkers[1].url).to.contain('shared-worker');
});
it('can inspect a specific shared worker', async () => {
const w = new BrowserWindow({ show: false, webPreferences: { nodeIntegration: true, contextIsolation: false } });
const ready = once(ipcMain, 'ready');
w.loadFile(path.join(fixturesPath, 'api', 'shared-worker', 'shared-worker.html'));
await ready;
const sharedWorkers = w.webContents.getAllSharedWorkers();
const devtoolsOpened = once(w.webContents, 'devtools-opened');
w.webContents.inspectSharedWorkerById(sharedWorkers[0].id);
await devtoolsOpened;
const devtoolsClosed = once(w.webContents, 'devtools-closed');
w.webContents.closeDevTools();
await devtoolsClosed;
});
});
describe('login event', () => {
afterEach(closeAllWindows);
let server: http.Server;
let serverUrl: string;
let serverPort: number;
let proxyServer: http.Server;
let proxyServerPort: number;
before(async () => {
server = http.createServer((request, response) => {
if (request.url === '/no-auth') {
return response.end('ok');
}
if (request.headers.authorization) {
response.writeHead(200, { 'Content-type': 'text/plain' });
return response.end(request.headers.authorization);
}
response
.writeHead(401, { 'WWW-Authenticate': 'Basic realm="Foo"' })
.end('401');
});
({ port: serverPort, url: serverUrl } = await listen(server));
});
before(async () => {
proxyServer = http.createServer((request, response) => {
if (request.headers['proxy-authorization']) {
response.writeHead(200, { 'Content-type': 'text/plain' });
return response.end(request.headers['proxy-authorization']);
}
response
.writeHead(407, { 'Proxy-Authenticate': 'Basic realm="Foo"' })
.end();
});
proxyServerPort = (await listen(proxyServer)).port;
});
afterEach(async () => {
await session.defaultSession.clearAuthCache();
});
after(() => {
server.close();
server = null as unknown as http.Server;
proxyServer.close();
proxyServer = null as unknown as http.Server;
});
it('is emitted when navigating', async () => {
const [user, pass] = ['user', 'pass'];
const w = new BrowserWindow({ show: false });
let eventRequest: any;
let eventAuthInfo: any;
w.webContents.on('login', (event, request, authInfo, cb) => {
eventRequest = request;
eventAuthInfo = authInfo;
event.preventDefault();
cb(user, pass);
});
await w.loadURL(serverUrl);
const body = await w.webContents.executeJavaScript('document.documentElement.textContent');
expect(body).to.equal(`Basic ${Buffer.from(`${user}:${pass}`).toString('base64')}`);
expect(eventRequest.url).to.equal(serverUrl + '/');
expect(eventAuthInfo.isProxy).to.be.false();
expect(eventAuthInfo.scheme).to.equal('basic');
expect(eventAuthInfo.host).to.equal('127.0.0.1');
expect(eventAuthInfo.port).to.equal(serverPort);
expect(eventAuthInfo.realm).to.equal('Foo');
});
it('is emitted when a proxy requests authorization', async () => {
const customSession = session.fromPartition(`${Math.random()}`);
await customSession.setProxy({ proxyRules: `127.0.0.1:${proxyServerPort}`, proxyBypassRules: '<-loopback>' });
const [user, pass] = ['user', 'pass'];
const w = new BrowserWindow({ show: false, webPreferences: { session: customSession } });
let eventRequest: any;
let eventAuthInfo: any;
w.webContents.on('login', (event, request, authInfo, cb) => {
eventRequest = request;
eventAuthInfo = authInfo;
event.preventDefault();
cb(user, pass);
});
await w.loadURL(`${serverUrl}/no-auth`);
const body = await w.webContents.executeJavaScript('document.documentElement.textContent');
expect(body).to.equal(`Basic ${Buffer.from(`${user}:${pass}`).toString('base64')}`);
expect(eventRequest.url).to.equal(`${serverUrl}/no-auth`);
expect(eventAuthInfo.isProxy).to.be.true();
expect(eventAuthInfo.scheme).to.equal('basic');
expect(eventAuthInfo.host).to.equal('127.0.0.1');
expect(eventAuthInfo.port).to.equal(proxyServerPort);
expect(eventAuthInfo.realm).to.equal('Foo');
});
it('cancels authentication when callback is called with no arguments', async () => {
const w = new BrowserWindow({ show: false });
w.webContents.on('login', (event, request, authInfo, cb) => {
event.preventDefault();
cb();
});
await w.loadURL(serverUrl);
const body = await w.webContents.executeJavaScript('document.documentElement.textContent');
expect(body).to.equal('401');
});
});
describe('page-title-updated event', () => {
afterEach(closeAllWindows);
it('is emitted with a full title for pages with no navigation', async () => {
const bw = new BrowserWindow({ show: false });
await bw.loadURL('about:blank');
bw.webContents.executeJavaScript('child = window.open("", "", "show=no"); null');
const [, child] = await once(app, 'web-contents-created') as [any, WebContents];
bw.webContents.executeJavaScript('child.document.title = "new title"');
const [, title] = await once(child, 'page-title-updated') as [any, string];
expect(title).to.equal('new title');
});
});
describe('context-menu event', () => {
afterEach(closeAllWindows);
it('emits when right-clicked in page', async () => {
const w = new BrowserWindow({ show: false });
await w.loadFile(path.join(fixturesPath, 'pages', 'base-page.html'));
const promise = once(w.webContents, 'context-menu') as Promise<[any, Electron.ContextMenuParams]>;
// Simulate right-click to create context-menu event.
const opts = { x: 0, y: 0, button: 'right' as const };
w.webContents.sendInputEvent({ ...opts, type: 'mouseDown' });
w.webContents.sendInputEvent({ ...opts, type: 'mouseUp' });
const [, params] = await promise;
expect(params.pageURL).to.equal(w.webContents.getURL());
expect(params.frame).to.be.an('object');
expect(params.x).to.be.a('number');
expect(params.y).to.be.a('number');
});
});
describe('close() method', () => {
afterEach(closeAllWindows);
it('closes when close() is called', async () => {
const w = (webContents as typeof ElectronInternal.WebContents).create();
const destroyed = once(w, 'destroyed');
w.close();
await destroyed;
expect(w.isDestroyed()).to.be.true();
});
it('closes when close() is called after loading a page', async () => {
const w = (webContents as typeof ElectronInternal.WebContents).create();
await w.loadURL('about:blank');
const destroyed = once(w, 'destroyed');
w.close();
await destroyed;
expect(w.isDestroyed()).to.be.true();
});
it('can be GCed before loading a page', async () => {
const v8Util = process._linkedBinding('electron_common_v8_util');
let registry: FinalizationRegistry<unknown> | null = null;
const cleanedUp = new Promise<number>(resolve => {
registry = new FinalizationRegistry(resolve as any);
});
(() => {
const w = (webContents as typeof ElectronInternal.WebContents).create();
registry!.register(w, 42);
})();
const i = setInterval(() => v8Util.requestGarbageCollectionForTesting(), 100);
defer(() => clearInterval(i));
expect(await cleanedUp).to.equal(42);
});
it('causes its parent browserwindow to be closed', async () => {
const w = new BrowserWindow({ show: false });
await w.loadURL('about:blank');
const closed = once(w, 'closed');
w.webContents.close();
await closed;
expect(w.isDestroyed()).to.be.true();
});
it('ignores beforeunload if waitForBeforeUnload not specified', async () => {
const w = (webContents as typeof ElectronInternal.WebContents).create();
await w.loadURL('about:blank');
await w.executeJavaScript('window.onbeforeunload = () => "hello"; null');
w.on('will-prevent-unload', () => { throw new Error('unexpected will-prevent-unload'); });
const destroyed = once(w, 'destroyed');
w.close();
await destroyed;
expect(w.isDestroyed()).to.be.true();
});
it('runs beforeunload if waitForBeforeUnload is specified', async () => {
const w = (webContents as typeof ElectronInternal.WebContents).create();
await w.loadURL('about:blank');
await w.executeJavaScript('window.onbeforeunload = () => "hello"; null');
const willPreventUnload = once(w, 'will-prevent-unload');
w.close({ waitForBeforeUnload: true });
await willPreventUnload;
expect(w.isDestroyed()).to.be.false();
});
it('overriding beforeunload prevention results in webcontents close', async () => {
const w = (webContents as typeof ElectronInternal.WebContents).create();
await w.loadURL('about:blank');
await w.executeJavaScript('window.onbeforeunload = () => "hello"; null');
w.once('will-prevent-unload', e => e.preventDefault());
const destroyed = once(w, 'destroyed');
w.close({ waitForBeforeUnload: true });
await destroyed;
expect(w.isDestroyed()).to.be.true();
});
});
describe('content-bounds-updated event', () => {
afterEach(closeAllWindows);
it('emits when moveTo is called', async () => {
const w = new BrowserWindow({ show: false });
w.loadURL('about:blank');
w.webContents.executeJavaScript('window.moveTo(50, 50)', true);
const [, rect] = await once(w.webContents, 'content-bounds-updated') as [any, Electron.Rectangle];
const { width, height } = w.getBounds();
expect(rect).to.deep.equal({
x: 50,
y: 50,
width,
height
});
await new Promise(setImmediate);
expect(w.getBounds().x).to.equal(50);
expect(w.getBounds().y).to.equal(50);
});
it('emits when resizeTo is called', async () => {
const w = new BrowserWindow({ show: false });
w.loadURL('about:blank');
w.webContents.executeJavaScript('window.resizeTo(100, 100)', true);
const [, rect] = await once(w.webContents, 'content-bounds-updated') as [any, Electron.Rectangle];
const { x, y } = w.getBounds();
expect(rect).to.deep.equal({
x,
y,
width: 100,
height: 100
});
await new Promise(setImmediate);
expect({
width: w.getBounds().width,
height: w.getBounds().height
}).to.deep.equal(process.platform === 'win32'
? {
// The width is reported as being larger on Windows? I'm not sure why
// this is.
width: 136,
height: 100
}
: {
width: 100,
height: 100
});
});
it('does not change window bounds if cancelled', async () => {
const w = new BrowserWindow({ show: false });
const { width, height } = w.getBounds();
w.loadURL('about:blank');
w.webContents.once('content-bounds-updated', e => e.preventDefault());
await w.webContents.executeJavaScript('window.resizeTo(100, 100)', true);
await new Promise(setImmediate);
expect(w.getBounds().width).to.equal(width);
expect(w.getBounds().height).to.equal(height);
});
});
});