When using the dotnet cli to run Appium tests on .net9 preview5, we are now seeing exceptions.

[PureWeen]

Description

It looks like the way appium routes messaging is triggering vstest to now report an error when running dotnet test

It's a bit odd, because this should just be debug info that appium is spitting out about the server setup. It's not really an error that's happening. I'm still reviewing through appium to see why appium outputs this information to the error output stream.

this only started with preview5 of .net 9

Steps to reproduce

• setup MAUI workloads
• Clone this repository https://github.com/PureWeen/maui-samples
• switch to this branch bump_appium_to_90
• The sample for running the appium tests is located here
• Follow getting started steps here to setup Appium https://github.com/PureWeen/maui-samples/tree/bump_appium_to_90/8.0/UITesting/BasicAppiumNunitSample#getting-started
• deploy the MAUI App to an android device.
• dotnet test UITests.Android/UITests.Android.csproj

I can run these tests from VSCODE and I don't receive any exceptions

Expected behavior

It should finish running with no errors

Actual behavior

it looks like it now reports the messages from appium as errors. I'm still unclear why Appium is using the error output to display server messages.

[nohwnd]

as we discussed interanally, we probably need to add an option to suppress errors that match a given pattern, because this will be source of problems for others as well. We are already converting some xunit output to info, so the error count is not doubled for every failing test.