Update tests/services/github/test_branch_manager.py

tests/services/github/test_branch_manager.py

@@ -0,0 +1,22 @@
+import unittest
+from unittest.mock import patch
+from services.github.branch_manager import get_default_branch
+
+
+class TestBranchManager(unittest.TestCase):
+
+    @patch('services.github.branch_manager.requests.get')
+    def test_get_default_branch(self, mock_get):
+        mock_response = mock_get.return_value
+        mock_response.raise_for_status.return_value = None
+        mock_response.json.return_value = [{
+            "name": "main",
+            "commit": {"sha": "abc123"}
+        }]
+
+        default_branch, commit_sha = get_default_branch("owner", "repo", "token")
+        self.assertEqual(default_branch, "main")
+        self.assertEqual(commit_sha, "abc123")
+
+if __name__ == '__main__':
+    unittest.main()