I need help getting this program to work going from windows to mac

Macintosh paths are simply Unix paths. There is not really a significant difference between them. So long as the special characters are escaped properly they should behave like unix.

Do you have examples of paths that are problematic?

I suspect the problem in your test is that it is using:

dir = "/erovf/test"

This is an absolute path that starts at the root of the file system. To make it a relative path you could either drop the leading slash erovf/test or you could add a “.” at the front ./erovf/test

I suspect that this is a problematic function:

  defp formats_basename(path) do
    "/" <> Path.basename(path)
  end

Which looks like it might be creating absolute paths when you don’t mean to.

For example if my cwd is /Users/easco/Projects/Elixir/erovf then ask for the base name:

iex(2)> File.cwd!() |> Path.basename()
"erovf"

and formats_basename will turn this into /erovf which is a folder named erovf at the root of the file system and is no longer related to the current working directory.

Sorry for the late response. The client ran the tests on his system and all of the main function related tests failed, so both identifies_misplaced_files/1 tests failed, in turn both of the mix task(run/1) tests failed (because they essentially just run identifies_misplaced_files/1). On top of that all 3 tests for identifies_path_type_and_formats/1 failed, leading to my question about paths and all probably info I should have included in the initial post so I am sorry for that. I turned “/erovf/test” into “erovf/test” and tossed format_basename/1 for just Path.basename/1 and all of my tests are passing so I am pretty happy with this solution so far. I will ask the client to pull it down one more time and run the tests again and once that happens I will return with good news or bad. Do you think that format_relative_path/1 is problematic at all?