The Run MSTest action allows you to run tests created with the Visual Studio MSTest framework.
Tests
Test Source
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There is also the option to choose "Standalone MSTest" version, if your copy of MSTest is not installed as part of a Visual Studio installation. The standalone path is also set from the Visual Studio options.
Publish Results
Publish results to team system
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Finally, you can optionally specify explicit settings to have results published to a specific TFS server, for a particular team project and team build ID.