Debugging flaky tests in elixir:

test.exs

      file_path = "/Users/you/debug"

      # open file
      {:ok, io_device} = File.open(file_path, [:append])

      # get all schemas
      :code.all_loaded()
      |> Enum.map(&elem(&1, 0))
      |> Enum.filter(&(to_string(&1) =~ "Schemas"))
      |> Enum.map(fn schema ->
        # get all elements for a schema
        schema
        |> Repo.all()
        |> tap(
          &if &1 != [] do
            IO.write(io_device, "\n-----\n")
            # display overview
            IO.inspect(length(&1), label: schema)
            IO.write(io_device, "#{schema}: #{length(&1)}")
          end
        )
        |> Enum.map(fn el ->
          el
          |> Map.from_struct()
          |> Enum.reject(fn {k, v} ->
            match?(%Ecto.Association.NotLoaded{}, v) or k == :__meta__
          end)
          # format the data
          |> Keyword.values()
          |> Enum.map_join(", ", &inspect/1)
          # write to file
          |> then(fn formated_data -> IO.write(io_device, ["\n", formated_data]) end)
        end)
      end)
      
      File.close(io_device)