Skip git test when missing required file

tests/versioning/tests.py

@@ -1,11 +1,19 @@
 from __future__ import absolute_import
 
+import os.path
+import pytest
+
 from django.conf import settings
 
 from raven.versioning import fetch_git_sha, fetch_package_version
 from raven.utils import six
 
 
+def has_git_requirements():
+    return os.path.join(settings.PROJECT_ROOT, '.git', 'refs', 'heads', 'master')
+
+
+@pytest.mark.skipif('not has_git_requirements()')
 def test_fetch_git_sha():
     result = fetch_git_sha(settings.PROJECT_ROOT)
     assert result is not None