According to BitBar documentation, Xamarin UITest is supported by BitBat, but I don't find any other info about it. I want to run my tests written with Xamarin.UITest on devices from BitBar, but I don't know how to do this. Can someone help me?
Bitbar supports Xamarin.UITest framework through Appium Server Side framework through Automation tab.
You can upload your application apk/ipa file and upload Xamarin.UITest test binaries from debug or release folder in a zip package to the platform and use Appium Server-Side framework to execute your scripts.
Here is a link to the documentation which explains how to create a zip package. Reach out to support if you have more questions.