## 19 November 2018

### Filtering XUnit Test by Trait in TeamCity

We were configuring our TeamCity instance to not run xunit tests with the category=integration. We ran into some interesting behavior of TeamCity, where the ".NET Process Runner" auto-quotes each line!

Our original configuration attempt was setting the .NET Process Runner with the following configuration:

• Runner type:
.NET Process Runner
• Path:
\path\to\xunit.console.exe
• Command line parameters:
Corp.Tests.dll
Corp.Web.Tests.dll
-notrait category=integration


However, we received the following error from xunit:

 error: unknown option: -notrait category=integration 

It turns out that if you use newline-separated command line parameters, teamcity will quote every line. So to pass a value to a parameter, you need to also use a newline to separate them:

Corp.Tests.dll
Corp.Web.Tests.dll
-notrait
category=integration