Quick script to run a simple webtest from powershell, setting contextParameters and capturing the results.

RunSingleWebTestWithVars.ps1

#
# Run_PostDeployWebTest.ps1
#


Param(
    [string][Parameter(Mandatory=$true)]$WebTestPath,
    [string][Parameter(Mandatory=$true)]$PublicUrl,
    [string][Parameter(Mandatory=$true)]$OutputDir,
    [string]$OutputFileName = "WebTestResult.xml"

)


#Runs the basic browse test to check things are behaving. 
if (Test-Path $OutputDir/$OutputFileName)
{
    Remove-Item $OutputDir/$OutputFileName
}

#Test vars are picked up from the environment variables. The test var needs to be prefixed with "Test." then the name of the var
[Environment]::SetEnvironmentVariable("Test.publicwww",$PublicUrl) 

& "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Mstest.exe" /TestContainer:"$WebTestPath" /resultsfile:"$OutputDir/$OutputFileName" /detail:errormessage /detail:outcometext /detail:duration /usestderr

Sure don't see why not, you should be able to invoke it with Process.Start or similar but I haven't tried so wouldn't be able to give you guidance.