Ensure file_md5 accept str and Path-like objects

dvc/remote/local.py

@@ -149,7 +149,7 @@ def walk_files(self, path_info):
             yield PathInfo(fname)
 
     def get_file_checksum(self, path_info):
-        return file_md5(fspath_py35(path_info))[0]
+        return file_md5(path_info)[0]
 
     def remove(self, path_info):
         if path_info.scheme != "local":

dvc/utils/__init__.py

@@ -44,6 +44,8 @@ def file_md5(fname):
     from dvc.progress import Tqdm
     from dvc.istextfile import istextfile
 
+    fname = fspath_py35(fname)
+
     if os.path.exists(fname):
         hash_md5 = hashlib.md5()
         binary = not istextfile(fname)

tests/unit/utils/test_utils.py

@@ -2,6 +2,8 @@
 
 import pytest
 
+from dvc.path_info import PathInfo
+from dvc.utils import file_md5
 from dvc.utils import fix_env
 from dvc.utils import to_chunks
 
@@ -71,3 +73,9 @@ def test_fix_env_pyenv(path, orig):
         "PYENV_HOOK_PATH": "/some/hook/path",
     }
     assert fix_env(env)["PATH"] == orig
+
+
+def test_file_md5(repo_dir):
+    fname = repo_dir.FOO
+    fname_object = PathInfo(fname)
+    assert file_md5(fname) == file_md5(fname_object)