TST: Mark test_repo.TestRepo.test_submodules as xfail on Cygwin

Author: DWesl

test/test_repo.py

@@ -11,9 +11,12 @@
 import os
 import pathlib
 import pickle
+import sys
 import tempfile
 from unittest import mock, skipIf, SkipTest
 
+import pytest
+
 from git import (
     InvalidGitRepositoryError,
     Repo,
@@ -903,6 +906,11 @@ def test_repo_odbtype(self):
         target_type = GitCmdObjectDB
         self.assertIsInstance(self.rorepo.odb, target_type)
 
+    @pytest.mark.xfail(
+        sys.platform == "cygwin",
+        reason="Cygwin GitPython can't find submodule SHA",
+        raises=ValueError
+    )
     def test_submodules(self):
         self.assertEqual(len(self.rorepo.submodules), 1)  # non-recursive
         self.assertGreaterEqual(len(list(self.rorepo.iter_submodules())), 2)