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Version: 1.17

Test Generator

Playwright comes with the ability to generate tests out of the box.

Generate tests

mvn exec:java -e -Dexec.args="codegen"

Run codegen and perform actions in the browser. Playwright will generate the code for the user interactions. codegen will attempt to generate resilient text-based selectors.

Preserve authenticated state

Run codegen with --save-storage to save cookies and localStorage at the end of the session. This is useful to separately record authentication step and reuse it later in the tests.

mvn exec:java -e -Dexec.args="codegen  --save-storage=auth.json"
# Perform authentication and exit.
# auth.json will contain the storage state.

Run with --load-storage to consume previously loaded storage. This way, all cookies and localStorage will be restored, bringing most web apps to the authenticated state.

mvn exec:java -e -Dexec.args="open --load-storage=auth.json"
mvn exec:java -e -Dexec.args="codegen --load-storage=auth.json"
# Perform authentication and exit.
# auth.json will contain the storage state.

Record using custom setup

If you would like to use codegen in some non-standard setup (for example, use BrowserContext.route(url, handler[, options])), it is possible to call Page.pause() that will open a separate window with codegen controls.


public class Example {
public static void main(String[] args) {
try (Playwright playwright = Playwright.create()) {
BrowserType chromium = playwright.chromium();
// Make sure to run headed.
Browser browser = chromium.launch(new BrowserType.LaunchOptions().setHeadless(false));
// Setup context however you like.
BrowserContext context = browser.newContext(/* pass any options */);
context.route("**/*", route -> route.resume());
// Pause the page, and start recording manually.
Page page = context.newPage();

Emulate devices

You can record scripts and tests while emulating a device.

# Emulate iPhone 11.
mvn exec:java -e -Dexec.args='codegen --device="iPhone 11"'

Emulate color scheme and viewport size

You can also record scripts and tests while emulating various browser properties.

# Emulate screen size and color scheme.
mvn exec:java -e -Dexec.args="codegen --viewport-size=800,600 --color-scheme=dark"

Emulate geolocation, language and timezone

# Emulate timezone, language & location
# Once page opens, click the "my location" button to see geolocation in action
mvn exec:java -e -Dexec.args='codegen --timezone="Europe/Rome" --geolocation="41.890221,12.492348" --lang="it-IT"'