xfail the test for non-dotted versions

xref #411 #449

Author: RonnyPfannschmidt

testing/test_git.py

@@ -254,6 +254,7 @@ def test_not_matching_tags(wd):
 
 
 @pytest.mark.issue("https://github.com/pypa/setuptools_scm/issues/411")
+@pytest.mark.xfail(reason="https://github.com/pypa/setuptools_scm/issues/449")
 def test_non_dotted_version(wd):
     wd.commit_testfile()
     wd("git tag apache-arrow-1")