Selenium – firefox

Blog: Novelties in Selenium Manager 0.4.15

Mon, 13 Nov 2023 00:00:00 +0000

Support for Firefox ESR

Selenium Manager 0.4.15 includes support for Firefox Extended Support Release (ESR). This way, Firefox ESR can be automatically managed with Selenium using the label esr in the browser version. Bindings languages set this browser version (like other accepted labels for browser versions, such as stable, beta, dev, canary, and nightly) using a browser option called browserVersion.

Support for Edge WebView2

Selenium Manager 0.4.15 allows automated driver management for Microsoft Edge WebView2. WebView2 is a component that enables embedding web technologies (HTML, CSS, and JavaScript) in native apps, using Microsoft Edge as the rendering engine to display web content. At the time of this writing, WebView2 is available in Windows.

This way, Selenium Manager allows detecting WebView2 in Windows machines and resolving the proper msedgedriver binary for it. Internally, Selenium Manager uses the browser name webview2 to handle WebView2, detecting its version based on registry queries. In the bindings, WebView2 is enabled through a browser option called useWebView.

Support for mirror repositories

Selenium Manager 0.4.15 includes a couple of new arguments in Selenium Manager for specifying custom URLs for drivers and browsers (instead of the default ones, such as chromedriver, Chrome for Testing, etc.). These arguments are:

--driver-mirror-url: Mirror URL for driver repositories.
--browser-mirror-url: Mirror URL for browser repositories.

As usual, these values can be configured using the config file or environment variable (e.g., SE_DRIVER_MIRROR_URL or SE_BROWSER_MIRROR_URL). Moreover, there are browser and driver-specific configuration keys, i.e. chrome-mirror-url, firefox-mirror-url, edge-mirror-url, etc. (in the configuration file), and SE_CHROME_MIRROR_URL, SE_FIREFOX_MIRROR_URL, SE_EDGE_MIRROR_URL, etc. (as environment variables).

Here is an example of this feature calling Selenium Manager from the shell:

./selenium-manager --debug --browser chrome --browser-version 100 --avoid-browser-download --driver-mirror-url=https://registry.npmmirror.com/-/binary/chromedriver/
DEBUG chromedriver not found in PATH
DEBUG chrome detected at C:\Program Files\Google\Chrome\Application\chrome.exe
DEBUG Running command: wmic datafile where name='C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe' get Version /value
DEBUG Output: "\r\r\n\r\r\nVersion=117.0.5938.150\r\r\n\r\r\n\r\r\n\r"
DEBUG Detected browser: chrome 117.0.5938.150
DEBUG Discovered chrome version (117) different to specified browser version (100)
DEBUG Required driver: chromedriver 100.0.4896.60
DEBUG Downloading chromedriver 100.0.4896.60 from https://registry.npmmirror.com/-/binary/chromedriver/100.0.4896.60/chromedriver_win32.zip
INFO Driver path: C:\Users\boni\.cache\selenium\chromedriver\win64\100.0.4896.60\chromedriver.exe
INFO Browser path: C:\Program Files\Google\Chrome\Application\chrome.exe

Debug release

To troubleshoot Selenium Manager in complex error cases, it is interesting to capture the backtrace. But to do that, the Selenium Manager binaries must be created with the debug symbols. Since the resulting binaries with debug symbols are much larger than the default release artifacts, we generate them on demand using a custom workflow in GitHub Actions. This way, we have included a checkbox in the workflow for triggering the Selenium Manager build. When this checkbox is enabled when building Selenium Manager, the debug symbols will be added to the resulting binaries (for Windows, Linux, and macOS). All in all, these binaries will be used on demand to troubleshoot complicated problems.

Selenium Manager in cache (only for Java bindings)

As of version 4.15.0 of the Selenium Java bindings, the Selenium Manager binary is extracted and copied to the cache folder. For instance, the Selenium Manager binary shipped with Selenium 4.15.0 is stored in the folder ~/.cache/selenium/manager/0.4.15). This feature will allow direct manipulation of Selenium Manager as a CLI tool, for instance, for troubleshooting. This feature is only available for Java bindings since Java is the only language that does not have direct access to the Selenium Manager binaries (since they are released compressed into the JAR files of the selenium-java artifacts).

Next steps

Look at Selenium Manager documentation for a detailed description of its features. Also, you can trace the status of the development activities in the Selenium Manager project dashboard.

Blog: What's new in Selenium Manager 0.4.12, shipped with Selenium 4.12.0

Mon, 28 Aug 2023 00:00:00 +0000

A new release of Selenium Manager is out. For this release, we made a relevant decision concerning the Selenium Manager versioning format. From now on, Selenium Manager will follow the same version as Selenium. Nevertheless, since Selenium Manager is still in beta, its major version is 0. Thus, Selenium 4.12.0 is shipped with Selenium Manager 0.4.12.

First, we made a substantial effort to stabilize the already available features on Selenium Manager. This way, the version includes several bug-fixing related to automated driver management or caching. You can find the details of the changes implemented in Selenium Manager 0.4.12 in the (newly created) changelog file.

Besides, for this release, we made a significant update to the documentation page of Selenium Manager. This page contains all the fine-grained information related to automated driver and browser management, configuration, etc. Also, it has several TL;DR summarizing the main ideas for the eager reader.

Automated Firefox management

After shipping automated browser management based on Chrome for Testing on the previous release, Selenium Manager 0.4.12 continues the job by providing automated Firefox management. This way, Selenium Manager 0.4.12 allows us to manage the different Firefox releases (for Windows, Linux, and macOS), making them seamlessly available for Selenium.

The procedure is the same as with Chrome. When Firefox is unavailable in the machine running Selenium, it is automatically discovered, downloaded, and cached by Selenium. If no version is specified, the latest stable Firefox release is managed by Selenium Manager. Besides, the bindings can use a browser option called browserVersion to specify a particular Firefox release (e.g., 114, 115, etc.). Finally, the label stable allows us to manage the current stable Firefox release explicitly, and the labels beta, dev, and nightly as used for unstable Firefox releases.

This feature is possible thanks to the remarkable work of the Firefox team by maintaining current and old releases in their public repository. Moreover, the Firefox version discovery in Selenium Manager is made thanks to the availability of the product-details JSON API, also maintained by the Firefox team.

Improved configuration

Custom setup is sometimes necessary for browser automation. For that reason, Selenium Manager already provides different features for rich configuration. Selenium Manager 0.4.12 extends this feature by delivering a new configuration argument called --cache-path. This argument allows changing the path of the local folder used to store downloaded assets (drivers and browsers) by Selenium Manager (by default, ~/.cache/selenium). As usual, this argument can also be changed by including an entry in the configuration file or using an environment variable (SE_CACHE_PATH). Regarding the former, the name of the configuration file has been renamed to se-config.toml in Selenium Manager 0.4.12. As usual, if you use this configuration file, it must be placed in the root of the cache folder.

Other changes

A minor change in Selenium Manager 0.4.12 is related to the metadata file, now called se-metadata.json. As usual, this file is stored in the root of the cache folder. This file contains versions discovered by Selenium Manager making network requests and the time-to-live (TTL) in which they are valid. Since the TTL for browsers and drivers is now the same concept, Selenium Manager unifies these two configuration elements (previously, browser_ttl and driver_ttl) in a single one called ttl (with a default value of 3600 seconds, i.e., 1 hour). For further details, visit the Selenium Manager page about caching.

Last but not least, the Selenium Manager binary compiled for macOS is universal, in the sense that it can be executed both in x64 and arm64 architectures out of the box. Previously, the binary was compiled for x64, and so, Rosetta should be available in arm64 macOS machines (i.e., M1 or M2). With the new Selenium Manager macOS binary, Rosetta is no longer mandatory.

Next steps

The next release of Selenium Manager will continue delivering automated browser management, this time for Edge, and other features. As usual, you can trace the work in progress in the Selenium Manager project dashboard.

Blog: Dev and Beta Channel Browsers via Docker Selenium

Tue, 23 Aug 2022 00:00:00 +0000

The Docker Selenium browser Beta and Dev channel releases are now regularly published to Docker Hub and updated every two days. This enables testers and developers to test their applications on pre-release versions of Google Chrome, Mozilla Firefox, and Microsoft Edge before their official releases, using container tools, such as Docker. This empowers teams to stay ahead of the curve and catch potential showstoppers in their CI environment before those issues have an impact on their users.

What are “release channels”?

Here’s some background on release channels: Google, Mozilla, and Microsoft all maintain different “channels” for their respective browser releases. Most end users use the “Stable” channel. The Stable channel releases have passed rigorous testing, and these versions are considered “production-ready”. Up until now, this was the only option for a tester or developer when using Docker Selenium. Today, we’re pleased to announce teams can also test on versions of these browsers yet to be released to the general population. These are the Beta and Dev channels.

For clarity, here is Google’s description of these 3 channels from their “Chrome Release Channels” page:

Stable channel: This channel has gotten the full testing and blessing of the Chrome test team, and is the best bet to avoid crashes and other issues. It’s updated roughly every two-three weeks for minor releases, and every 6 weeks for major releases.

Beta channel: If you are interested in seeing what’s next, with minimal risk, Beta channel is the place to be. It’s updated every week roughly, with major updates coming every six weeks, more than a month before the Stable channel will get them.

Dev channel: If you want to see what’s happening quickly, then you want the Dev channel. The Dev channel gets updated once or twice weekly, and it shows what we’re working on right now. There’s no lag between major versions, whatever code we’ve got, you will get. While this build does get tested, it is still subject to bugs, as we want people to see what’s new as soon as possible.

Standalone Usage:

To use these new Docker Selenium container images in Standalone mode, run the following commands:

Chrome Beta:

$ docker run --rm -it -p 4444:4444 -p 7900:7900 --shm-size 2g selenium/standalone-chrome:beta

Chrome Dev:

$ docker run --rm -it -p 4444:4444 -p 7900:7900 --shm-size 2g selenium/standalone-chrome:dev

Firefox Beta:

$ docker run --rm -it -p 4444:4444 -p 7900:7900 --shm-size 2g selenium/standalone-firefox:beta

Firefox Dev:

$ docker run --rm -it -p 4444:4444 -p 7900:7900 --shm-size 2g selenium/standalone-firefox:dev

Edge Beta:

$ docker run --rm -it -p 4444:4444 -p 7900:7900 --shm-size 2g selenium/standalone-edge:beta

Edge Dev:

$ docker run --rm -it -p 4444:4444 -p 7900:7900 --shm-size 2g selenium/standalone-edge:dev

Selenium Grid

To run these container images in a Selenium Grid, we’ll use docker-compose. For instance, this example shows how to run a Selenium Grid with Chrome, Firefox, and Edge on the Beta channel:

docker-compose-v3-beta-channel.yml:

# To execute this docker-compose yml file use `docker-compose -f docker-compose-v3-beta-channel.yml up`
# Add the `-d` flag at the end for detached execution
# To stop the execution, hit Ctrl+C, and then `docker-compose -f docker-compose-v3-beta-channel.yml down`
version: "3"
services:
 chrome:
 image: selenium/node-chrome:beta
 shm_size: 2gb
 depends_on:
 - selenium-hub
 environment:
 - SE_EVENT_BUS_HOST=selenium-hub
 - SE_EVENT_BUS_PUBLISH_PORT=4442
 - SE_EVENT_BUS_SUBSCRIBE_PORT=4443

 edge:
 image: selenium/node-edge:beta
 shm_size: 2gb
 depends_on:
 - selenium-hub
 environment:
 - SE_EVENT_BUS_HOST=selenium-hub
 - SE_EVENT_BUS_PUBLISH_PORT=4442
 - SE_EVENT_BUS_SUBSCRIBE_PORT=4443

 firefox:
 image: selenium/node-firefox:beta
 shm_size: 2gb
 depends_on:
 - selenium-hub
 environment:
 - SE_EVENT_BUS_HOST=selenium-hub
 - SE_EVENT_BUS_PUBLISH_PORT=4442
 - SE_EVENT_BUS_SUBSCRIBE_PORT=4443

 selenium-hub:
 image: selenium/hub:latest
 container_name: selenium-hub
 ports:
 - "4442:4442"
 - "4443:4443"
 - "4444:4444"

To run on the more cutting edge – and hence potentially more buggy – Dev channel, simply replace the “beta” tags with “dev”.

Support

These Beta and Dev images represent pre-release browsers and WebDrivers, and they’re not guaranteed to be 100% stable. Should you run into any issues with these images, support from the Selenium community is limited and is dependent on the browser vendors. However, if you believe the issue is related to Selenium, please contact us in the various support channels.