anchor.diff:  
   open System
   open System.Reflection
  +open System.Runtime.InteropServices
   open System.IO
   
   open NUnit.Framework
  
positive.code: [<TestFixture>]
  module FsiTests =
  
      let is64BitProcess = IntPtr.Size = 8
  
      let runsOnMono = lazy(Type.GetType("Mono.Runtime") <> null)
  
      let getFullPath path = 
          let fullPath = Path.Combine(__SOURCE_DIRECTORY__, "..", "..", path) |> Path.GetFullPath
  
negative.code: 
      [<Test>]
      let ``27 Mixed mode assemblies`` () =
          if isWindowsProcess && isX64Process then
              let fsi = FsiSession.Value
  
              fsi.EvalInteraction """
  