using the command-line test utility

MSTest /testcontainer:TestProject1.dll /resultsfile:testResults1.trx

http://msdn.microsoft.com/en-us/library/ms182490.aspx

MSTest /testcontainer: testproject2\bin\debug\testproject2.dll /category:"Priority1&ShoppingCart"MSTest /testmetadata:Bank.vsmdi /testlist:balancetests

http://msdn.microsoft.com/en-us/library/ms182487.aspx

http://msdn.microsoft.com/en-us/library/ms182489.aspx