feat(meals): enforce three lower-calorie dinners with media

backend/tests/test_load_starter_recipes.py

@@ -0,0 +1,90 @@
+"""Direct CLI coverage for the bundled starter recipe loader."""
+from __future__ import annotations
+
+import importlib.util
+import json
+from pathlib import Path
+
+import pytest
+
+from app.services.starter_recipe_catalog import StarterRecipeCatalogError
+
+
+SCRIPT_PATH = Path(__file__).resolve().parent.parent / "scripts" / "load_starter_recipes.py"
+
+
+class FakeSession:
+    def __init__(self):
+        self.rollback_count = 0
+        self.close_count = 0
+
+    def rollback(self):
+        self.rollback_count += 1
+
+    def close(self):
+        self.close_count += 1
+
+
+@pytest.fixture()
+def loader_cli():
+    spec = importlib.util.spec_from_file_location("load_starter_recipes", SCRIPT_PATH)
+    assert spec and spec.loader
+    module = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(module)
+    return module
+
+
+def test_cli_forwards_update_existing_and_writes_json(loader_cli, monkeypatch, capsys):
+    db = FakeSession()
+    calls = []
+    summary = {"catalog_version": 2, "updated_recipes": 50}
+    monkeypatch.setattr(loader_cli, "SessionLocal", lambda: db)
+    monkeypatch.setattr(
+        loader_cli,
+        "load_bundled_starter_catalog",
+        lambda session, **kwargs: calls.append((session, kwargs)) or summary,
+    )
+
+    assert loader_cli.main(["--update-existing"]) == 0
+
+    assert calls == [(db, {"dry_run": False, "update_existing": True})]
+    assert json.loads(capsys.readouterr().out) == summary
+    assert db.rollback_count == 0
+    assert db.close_count == 1
+
+
+def test_cli_reports_catalog_errors_as_json_and_closes_rolled_back_session(
+    loader_cli, monkeypatch, capsys
+):
+    db = FakeSession()
+    monkeypatch.setattr(loader_cli, "SessionLocal", lambda: db)
+
+    def fail_catalog_load(session, **kwargs):
+        raise StarterRecipeCatalogError("catalog validation failed")
+
+    monkeypatch.setattr(loader_cli, "load_bundled_starter_catalog", fail_catalog_load)
+
+    assert loader_cli.main(["--dry-run"]) == 1
+
+    assert json.loads(capsys.readouterr().out) == {
+        "dry_run": True,
+        "error": "catalog validation failed",
+    }
+    assert db.rollback_count == 1
+    assert db.close_count == 1
+
+
+def test_cli_rolls_back_and_closes_session_for_database_failures(loader_cli, monkeypatch):
+    db = FakeSession()
+    monkeypatch.setattr(loader_cli, "SessionLocal", lambda: db)
+
+    def fail_catalog_load(session, **kwargs):
+        raise RuntimeError("database write failed")
+
+    monkeypatch.setattr(loader_cli, "load_bundled_starter_catalog", fail_catalog_load)
+
+    with pytest.raises(RuntimeError, match="database write failed"):
+        loader_cli.main([])
+
+    assert db.rollback_count == 1
+    assert db.close_count == 1