Avoid relying on ~/.gitconfig existing.

dulwich/tests/compat/server_utils.py

@@ -165,7 +165,7 @@ class ServerTests(object):
             # We don't create a Repo from new_repo_dir until after some errors
             # may have occurred, so don't depend on tearDown to clean it up.
             shutil.rmtree(new_repo_base_dir)
-    
+
     def test_lsremote_from_dulwich(self):
         self._repo = import_repo('server_old.export')
         port = self._start_server(self._repo)

dulwich/tests/test_porcelain.py

@@ -355,7 +355,9 @@ class ResetTests(PorcelainTestCase):
         finally:
             f.close()
         porcelain.add(self.repo.path, paths=["foo"])
-        porcelain.commit(self.repo.path, message="Some message")
+        porcelain.commit(self.repo.path, message="Some message",
+                committer="Jane <jane@example.com>",
+                author="John <john@example.com>")
 
         f = open(os.path.join(self.repo.path, 'foo'), 'w')
         try: