Handle missing calendar CLI relation (#1574)

tests/test_calendar_cli_name.py

@@ -0,0 +1,32 @@
+import importlib.machinery
+import importlib.util
+import sys
+import types
+from pathlib import Path
+from types import SimpleNamespace
+from unittest.mock import MagicMock
+
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def _load_cli(monkeypatch):
+    db = types.ModuleType("core.database")
+    db.SessionLocal = MagicMock()
+    db.CalendarCal = MagicMock()
+    db.CalendarEvent = MagicMock()
+    monkeypatch.setitem(sys.modules, "core.database", db)
+    path = ROOT / "scripts" / "odysseus-calendar"
+    loader = importlib.machinery.SourceFileLoader("odysseus_calendar_cli", str(path))
+    spec = importlib.util.spec_from_loader(loader.name, loader)
+    module = importlib.util.module_from_spec(spec)
+    loader.exec_module(module)
+    return module
+
+
+def test_calendar_name_handles_missing_relation(monkeypatch):
+    cli = _load_cli(monkeypatch)
+
+    assert cli._calendar_name(SimpleNamespace(calendar=None)) == ""
+    assert cli._calendar_name(SimpleNamespace(calendar=SimpleNamespace(name=123))) == ""
+    assert cli._calendar_name(SimpleNamespace(calendar=SimpleNamespace(name="Work"))) == "Work"