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const { _electron: electron } = require('playwright');
const electronApp = await electron.launch({ args: ['main.js'] });
const window = await electronApp.firstWindow();
await window.getByRole('button', { name: 'Save' }).click();
await electronApp.close();Replace Save with the button’s accessible name or use a stable test id. The official Playwright Electron documentation describes Electron automation as experimental, so check the current compatibility notes for the exact Playwright and Electron versions in your project.
Understand the two pieces: binding and driving
There are two separate jobs:
- Binding: application code in the renderer associates a button with a function.
- Driving: Playwright controls the already-running renderer and performs the interaction your user would perform.
Do not try to “bind” the application’s event from a Playwright test. A test click invokes a handler that the application has already registered; it does not permanently add one.
Plain DOM renderer
For a renderer that uses the DOM directly, register the listener when the page is initialized:
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const saveButton = document.querySelector('#save');
function onSave() {
document.querySelector('#status').textContent = 'Saved';
}
saveButton.addEventListener('click', onSave);The corresponding markup needs a real button and an accessible name:
<button id='save' type='button'>Save</button>
<p id='status'>Not saved</p>In a UI framework, use that framework’s normal button callback or event syntax instead of adding a second, competing DOM listener. The Playwright side remains the same: find the rendered button and click it.
Install and launch an Electron test
Install Playwright
From the project directory, install Playwright as a development dependency:
npm install --save-dev playwrightYour test must be able to launch the application’s Electron entry point (the example below uses main.js). A minimal CommonJS test file, button.spec.js, is:
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(async () => {
const electronApp = await electron.launch({ args: ['main.js'] });
try {
const window = await electronApp.firstWindow();
await window.getByRole('button', { name: 'Save' }).click();
await window.getByText('Saved').waitFor();
} finally {
await electronApp.close();
}
})();firstWindow() waits for the first application window and returns a Playwright Page. The ElectronApplication API reference documents this lifecycle and the events for later windows.
Locate the button reliably
Prefer an accessible role and name
Use a role locator when the button has a stable, user-facing label:
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await window.getByRole('button', { name: 'Save' }).click();This expresses what a user sees and avoids coupling the test to layout or generated CSS classes. If the label changes intentionally, update the test with the product change.
Use a test id when the visible name is not stable
For icon-only controls or labels that vary by locale, expose a deliberate test id:
<button data-testid='save-button' aria-label='Save'>
<span aria-hidden='true'>✓</span>
</button>await window.getByTestId('save-button').click();Keep the accessible name as well; it benefits keyboard and assistive-technology users even when the test uses the id.
CSS and text locators are fallbacks
A CSS locator works when the selector is an intentional contract:
await window.locator('#save').click();A text locator can be useful for a simple static label, but role or test-id locators generally make the intended target clearer.
Trigger a normal user-like click
locator.click() is the default for an end-to-end test. Playwright performs its normal actionability checks before clicking, so the test exercises conditions such as whether the target can be interacted with rather than merely dispatching an event.
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const save = window.getByRole('button', { name: 'Save' });
await save.click();
await window.getByText('Saved').waitFor();Assert the visible result or another observable side effect after the click. Avoid asserting only that the click call returned; a successful call does not prove that the application’s save operation completed.
Dispatch a DOM click only when that is the test
dispatchEvent('click') directly dispatches a DOM event and is equivalent to calling element.click(). It can dispatch even when the element is not visible. That makes it appropriate for a test specifically about an event handler, but it can bypass the user-facing conditions that locator.click() is designed to check.
const hiddenButton = window.locator('#save');
await hiddenButton.dispatchEvent('click');Use this intentionally, for example when you are isolating whether a listener responds to a DOM event. Do not substitute it for a normal interaction test merely to get around a covered, disabled, detached, or otherwise non-actionable control.
Handle the first and subsequent Electron windows
Use the first renderer window
For the window created during startup:
const electronApp = await electron.launch({ args: ['main.js'] });
const mainWindow = await electronApp.firstWindow();
await mainWindow.getByRole('button', { name: 'Save' }).click();Wait before clicking when a click opens a child window
Set up the event wait before the click so the new-window event cannot be missed:
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await mainWindow.getByRole('button', { name: 'Open details' }).click();
const childWindow = await childWindowPromise;
await childWindow.getByRole('heading', { name: 'Details' }).waitFor();ElectronApplication emits a window event for each newly created and loaded window. You can also inspect currently opened windows with electronApp.windows(), as documented in the ElectronApplication reference.
Keep references tied to the window they belong to
A locator belongs to its renderer Page. After a child window opens, create locators from childWindow rather than continuing to search the main page. This prevents a valid selector from being evaluated in the wrong renderer.
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Complete example: renderer, Electron main process, and test
Electron entry point
This compact main.js creates a window and loads a local renderer file:
const { app, BrowserWindow } = require('electron');
const path = require('path');
function createWindow() {
const win = new BrowserWindow({ width: 800, height: 600 });
win.loadFile(path.join(__dirname, 'index.html'));
}
app.whenReady().then(createWindow);
app.on('window-all-closed', () => {
if (process.platform !== 'darwin') app.quit();
});Renderer markup and binding
<!doctype html>
<html>
<body>
<button id='save' type='button'>Save</button>
<output id='status'>Not saved</output>
<script>
const button = document.querySelector('#save');
const status = document.querySelector('#status');
button.addEventListener('click', () => {
status.textContent = 'Saved';
});
</script>
</body>
</html>Test the behavior
const { _electron: electron } = require('playwright');
(async () => {
const electronApp = await electron.launch({ args: ['main.js'] });
try {
const window = await electronApp.firstWindow();
const save = window.getByRole('button', { name: 'Save' });
await save.click();
await window.getByText('Saved').waitFor();
} finally {
await electronApp.close();
}
})();The test action and the application binding are deliberately separate. You can replace the renderer implementation with React, Vue, another framework, or plain DOM code without changing the interaction contract if the rendered button remains discoverable.
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Troubleshoot failures by symptom
Electron launch times out
Check the Electron launch prerequisites first. The Playwright Electron documentation calls out the nodeCliInspect Electron fuse, FuseV1Options.EnableNodeCliInspectArguments. If that fuse is disabled, launch under Playwright can time out. This is a startup problem, not a locator fix; verify the fuse and then retry with the exact Playwright and Electron versions used by the project.
“Button not found” or a timeout on the locator
- Confirm that
firstWindow()returned the renderer page that actually contains the control. - Check the rendered accessible name; whitespace, localization, and changed labels affect a role-and-name locator.
- Wait for the application state that creates the button instead of inserting an arbitrary long delay.
- If the control is in a child window, wait for the
windowevent and use that returned page. - Use a deliberate test id only when the accessible role and name are not a stable contract.
Click is blocked by visibility or actionability
That usually means the test is exposing a real user-facing condition: an overlay, disabled state, missing layout, or a control that has not finished rendering. Fix the application state or wait for the relevant UI condition. Use dispatchEvent('click') only if bypassing those conditions is the explicit purpose of the test.
The click succeeds but nothing changes
- Verify that the renderer registered the listener before the click.
- Check that the locator targets the intended button rather than a duplicate.
- Assert the expected visible state or side effect to reveal whether the handler ran.
- For asynchronous work, wait for a UI signal that represents completion rather than ending the test immediately after the click.
The wrong window receives the action
Do not reuse a main-window locator for a newly opened page. Capture the window event before clicking, await the resulting Page, and create fresh locators from that page.
Reliability, speed, and maintenance practices
Make the UI contract explicit
Accessible role/name locators document the user action and tend to survive visual rearrangement. Test ids are useful for controls whose visible wording is intentionally unstable. Whichever contract you choose, keep it unique within the renderer.
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Wait on state, not elapsed time
Prefer a locator wait, a visible status, or the arrival of a child window over a fixed sleep. State-based waits finish as soon as the application is ready and avoid making fast runs unnecessarily slow.
Close the application in cleanup
Always close the ElectronApplication in a finally block. It prevents an interrupted test from leaving Electron processes behind and keeps later tests independent.
Keep event handlers single-purpose
Bind one clear callback for the button, and make the resulting state observable. A small, deterministic side effect gives the test a stable assertion without coupling it to private renderer implementation details.
Account for experimental support
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Or skip the browser setup
If your goal is a screenshot or PDF rather than an interaction test, ScreenshotNeo provides a website screenshot API and MCP server. One GET request can return a PNG, JPEG, WebP, or PDF without launching an Electron browser in your test.
For example, using the documented API pattern (see the ScreenshotNeo documentation):
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Node.js and Python request examples for ScreenshotNeo
If your automation is written outside the Electron test, the same endpoint can be called directly.
Quick Recap
Python
import requests
r = requests.get(
"https://api.screenshotneo.com/v1/shot",
params={"access_key": "YOUR_API_KEY", "url": "https://stripe.com"},
timeout=90,
)
r.raise_for_status()
open("shot.webp", "wb").write(r.content)Node.js
const q = new URLSearchParams({ access_key: 'YOUR_API_KEY', url: 'https://stripe.com' });
const res = await fetch(`https://api.screenshotneo.com/v1/shot?${q}`);
if (!res.ok) throw new Error(`Screenshot failed: ${res.status}`);
const fs = await import('node:fs/promises');
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