anchor.diff:                  "Configuration", buildMode
               ]
       }
  +
  +// define test dlls
  +let testDlls = !! (testDir + "/*UnitTest.dll")
  +
  +Target "xUnitTest" (fun _ ->
  +    testDlls
  +        |> xUnit (fun p -> 
  +            {p with 
  +                ShadowCopy = false })
  +)
   
   Target "RestorePackages" (fun _ -> 
        "./bedbrebo.sln"
  
positive.code: 
  // directories
  let buildDir = "./build/"
  
  let buildMode = getBuildParamOrDefault "buildMode" "Release"
  
  
negative.code:    ==> "BuildApp"
  
  "RestorePackages"
      ==> "xUnitTest"
      ==> "BuildApp"
  
  "RestorePackages"
      ==> "xUnitTest"
      ==> "BuildApp45"
  
  "BuildApp"
  