Handle missing active milestones

gitHappens.py

@@ -102,6 +102,8 @@ def list_milestones(current=False):
             if start_date and due_date and start_date <= today and due_date >= today:
                 active_milestones.append(milestone)
         active_milestones.sort(key=lambda x: x['due_date'])
+        if not active_milestones:
+            return None
         return active_milestones[0]
     return milestones
 
@@ -842,4 +844,4 @@ def main():
         startIssueCreation(project_id, title, milestone, epic, iteration, selectedSettings, onlyIssue)
 
 if __name__ == '__main__':
-    main()
+    main()

tests/__init__.py

@@ -0,0 +1 @@
+

tests/test_milestones_empty.py

@@ -0,0 +1,58 @@
+import importlib.util
+import json
+import sys
+import types
+import unittest
+from pathlib import Path
+from unittest import mock
+
+
+def load_githappens_module():
+    root = Path(__file__).resolve().parents[1]
+    config_dir = root / "configs"
+    config_dir.mkdir(exist_ok=True)
+    (config_dir / "config.ini").write_text(
+        "[DEFAULT]\n"
+        "base_url=https://gitlab.example\n"
+        "group_id=42\n"
+        "custom_template=Custom\n"
+        "GITLAB_TOKEN=test-token\n"
+        "squash_commits=true\n"
+        "delete_branch_after_merge=true\n",
+        encoding="utf-8",
+    )
+    (config_dir / "templates.json").write_text(
+        '{"templates": [], "reviewers": []}',
+        encoding="utf-8",
+    )
+
+    sys.modules["inquirer"] = types.SimpleNamespace(
+        prompt=mock.Mock(),
+        Text=lambda *args, **kwargs: ("Text", args, kwargs),
+        List=lambda *args, **kwargs: ("List", args, kwargs),
+        Checkbox=lambda *args, **kwargs: ("Checkbox", args, kwargs),
+    )
+
+    spec = importlib.util.spec_from_file_location("gitHappens_under_test", root / "gitHappens.py")
+    module = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(module)
+    return module
+
+
+class EmptyMilestonesTest(unittest.TestCase):
+    def test_current_milestone_returns_none_when_no_active_milestone_exists(self):
+        git_happens = load_githappens_module()
+        result = mock.Mock()
+        result.stdout = json.dumps([
+            {"id": 1, "title": "Past", "start_date": "2024-01-01", "due_date": "2024-01-31"},
+            {"id": 2, "title": "Future", "start_date": "2099-01-01", "due_date": "2099-01-31"},
+        ]).encode()
+
+        with mock.patch.object(git_happens.subprocess, "run", return_value=result):
+            milestone = git_happens.list_milestones(current=True)
+
+        self.assertIsNone(milestone)
+
+
+if __name__ == "__main__":
+    unittest.main()