code: def test_relpath_windows_different_drives():
      path1 = os.path.join("A:", os.sep, "some", "path")
      path2 = os.path.join("B:", os.sep, "other", "path")
      assert relpath(path1, path2) == path1
  
      rel = relpath(path1, path2)
      assert isinstance(rel, str)
      assert rel == path1
  
imports: import os
  import pytest
  import dvc
  from dvc.fs import system
  from dvc.utils import relpath
  from dvc.utils.fs import BasePathNotInCheckedPathException, contains_symlink_up_to, path_isin, remove
label_desc: Use image node_id 8 for calling a global function with example usage: test_relpath_windows_different_drives() without return types