With Playwright you can test your app on any browser as well as emulate a real device such as a mobile phone or tablet. Simply configure the devices you would like to emulate and Playwright will simulate the browser behavior such as "userAgent", "screenSize", "viewport" and if it "hasTouch" enabled. You can also emulate the "geolocation", "locale" and "timezone" for all tests or for a specific test as well as set the "permissions" to show notifications or change the "colorScheme".
Playwright can emulate various devices by specifying setDeviceScaleFactor, setHasTouch, setIsMobile, setScreenSize, setUserAgent and setViewportSize options when creating a context with Browser.newContext().
The viewport is included in the device but you can override it for some tests with Page.setViewportSize().
Test file:
The same works inside a test file.
BrowserContext context = browser.newContext(new Browser.NewContextOptions()
.setViewportSize(1280, 1024));
page.setViewportSize(1600, 1200);
BrowserContext context = browser.newContext(new Browser.NewContextOptions()
.setViewportSize(2560, 1440)
.setDeviceScaleFactor(2));
Whether the meta viewport tag is taken into account and touch events are enabled.
BrowserContext context = browser.newContext(new Browser.NewContextOptions()
.isMobile(false));
Emulate the browser Locale and Timezone which can be set globally for all tests in the config and then overridden for particular tests.
BrowserContext context = browser.newContext(new Browser.NewContextOptions()
.setLocale("de-DE")
.setTimezoneId("Europe/Berlin"));
Allow app to show system notifications.
BrowserContext context = browser.newContext(new Browser.NewContextOptions()
.setPermissions(Arrays.asList("notifications")));
Allow notifications for a specific domain.
context.grantPermissions(Arrays.asList("notifications"),
new BrowserContext.GrantPermissionsOptions().setOrigin("https://skype.com"));
Revoke all permissions with BrowserContext.clearPermissions().
context.clearPermissions();
Grant "geolocation" permissions and set geolocation to a specific area.
BrowserContext context = browser.newContext(new Browser.NewContextOptions()
.setGeolocation(41.890221, 12.492348)
.setPermissions(Arrays.asList("geolocation")));
Change the location later:
context.setGeolocation(new Geolocation(48.858455, 2.294474));
Note you can only change geolocation for all pages in the context.
Emulate the users "colorScheme". Supported values are 'light' and 'dark'. You can also emulate the media type with Page.emulateMedia().
BrowserContext context = browser.newContext(new Browser.NewContextOptions()
.setColorScheme(ColorScheme.DARK));
Page page = browser.newPage(new Browser.NewPageOptions()
.setColorScheme(ColorScheme.DARK));
page.emulateMedia(new Page.EmulateMediaOptions().setColorScheme(ColorScheme.DARK));
page.emulateMedia(new Page.EmulateMediaOptions().setMedia(Media.PRINT));
The User Agent is included in the device and therefore you will rarely need to change it however if you do need to test a different user agent you can override it with the userAgent property.
BrowserContext context = browser.newContext(new Browser.NewContextOptions()
.setUserAgent("My user agent"));
Emulate the network being offline.
BrowserContext context = browser.newContext(new Browser.NewContextOptions()
.setOffline(true));
Emulate a user scenario where JavaScript is disabled.
BrowserContext context = browser.newContext(new Browser.NewContextOptions()
.javaScriptEnabled(false));
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