Launching Chrome with mobile emulation enabled from the command line

[Michael Hollander]

Hello,

I would like to know if it's possible to launch Chrome from the command line with mobile emulation enabled (normally done with F12 > Toggle device toolbar). I will be running some automated test cases and I'd like to emulate Chrome for Android so I don't need to deal with actually emulating Android devices, which will be a pain as multiple models of phones will need to be tested.

[Paul Irish]

Typically whatever software is automating Chrome has an option for enabling emulation. eg you can do this in WebDriver/ChromeDriver and puppeteer.

On Wed, Jan 23, 2019, 12:27 PM Michael Hollander <hollan...@gmail.com wrote:

Hello,

I would like to know if it's possible to launch Chrome from the command line with mobile emulation enabled (normally done with F12 > Toggle device toolbar). I will be running some automated test cases and I'd like to emulate Chrome for Android so I don't need to deal with actually emulating Android devices, which will be a pain as multiple models of phones will need to be tested.

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[PhistucK]

Assuming you re-use the user data dir, you can launch Chrome, enable device mode and then every time you launch Chrome with --auto-open-devtools-for-tabs, it will automatically launch the Developer Tools (and automatically enable device mode) and your tests will run in device mode.

(Unless you are using --headless, in which case, you might have to do something else using the debugging protocol.)

☆PhistucK

On Wed, Jan 23, 2019 at 7:27 PM Michael Hollander <hollan...@gmail.com> wrote:

Hello,

I would like to know if it's possible to launch Chrome from the command line with mobile emulation enabled (normally done with F12 > Toggle device toolbar). I will be running some automated test cases and I'd like to emulate Chrome for Android so I don't need to deal with actually emulating Android devices, which will be a pain as multiple models of phones will need to be tested.

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[goe...@umich.edu]

I was recently trying to do something similar. 

Hopefully this should answer your question: https://github.com/ChromeDevTools/devtools-protocol/issues/141