anchor.diff:    open Expecto.Logging
     open Expecto.Logging.Message
     open Helpers
  +  open Mono.Cecil
     open Mono.Cecil.Rocks
   
     let logger = Log.create "Expecto"
  
positive.code:       |> Seq.toList
        |> listToTestListOption
  
    /// Scan filtered tests marked with TestsAttribute from an assembly
    let testFromAssemblyWithFilter typeFilter (a: Assembly) =
      a.GetExportedTypes()
      |> Seq.filter typeFilter
      |> Seq.choose testFromType
      |> Seq.toList
      |> listToTestListOption
  
  
negative.code:   let listTests test =
      test
      |> Test.toTestCodeList
      |> Seq.iter (fun t ->
        if t.location <> SourceLocation.Empty then
          printfn "%s [%s:%d]" t.name t.location.SourcePath t.location.LineNumber
        else
          printfn "%s" t.name)
  
  
    /// Runs tests with the supplied options.
    /// Returns 0 if all tests passed, otherwise 1
  