anchor.diff:  
   
   let groupsLockFile = """REDIRECTS: ON
  +COPY-LOCAL: TRUE
   IMPORT-TARGETS: TRUE
  -COPY-LOCAL: TRUE
   NUGET
     remote: "D:\code\temp with space"
     specs:
       Castle.Windsor (2.1)
  +
   GROUP Build
   REDIRECTS: ON
   COPY-LOCAL: TRUE
  
positive.code:     lockFile2.Options.Settings.CopyLocal |> shouldEqual (Some true)
      lockFile2.Options.Settings.ReferenceCondition |> shouldEqual (Some "LEGACY")
  
      packages2.Head.Source |> shouldEqual (PackageSource.LocalNuget("D:\code\\temp with space"))  
      packages2.[0].Name |> shouldEqual (PackageName "FAKE")
      packages2.[0].Settings.CreateBindingRedirects |> shouldEqual (Some true)
negative.code:   remote: "D:\code\temp with space"
    specs:
      FAKE (4.0) - redirects: on
  """
  
  [<Test>]
  let ``should parse lock file with groups``() = 
  