test(app): cover selected item hint forwarding for downloads

tests/app/test_app_actions_download_hints.py

@@ -0,0 +1,52 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import Any, cast
+
+from auditui.app.actions import AppActionsMixin
+
+
+@dataclass(slots=True)
+class FakeTable:
+    """Minimal table shim exposing cursor and row count."""
+
+    row_count: int
+    cursor_row: int = 0
+
+
+class DummyActionsApp(AppActionsMixin):
+    """Minimal app host used for download naming hint tests."""
+
+    def __init__(self) -> None:
+        """Initialize state required by action helpers."""
+        self.current_items: list[dict] = []
+        self.download_manager = object()
+        self.library_client = type(
+            "Library", (), {"extract_asin": lambda self, item: item.get("asin")}
+        )()
+        self._table = FakeTable(row_count=0, cursor_row=0)
+
+    def update_status(self, message: str) -> None:
+        """Ignore status in this focused behavior test."""
+        del message
+
+    def query_one(self, selector: str, _type: object) -> FakeTable:
+        """Return the fake table used in selection tests."""
+        assert selector == "#library_table"
+        return self._table
+
+
+def test_action_toggle_download_passes_selected_item() -> None:
+    """Ensure download toggle forwards selected item for naming hints."""
+    app = DummyActionsApp()
+    seen: list[tuple[str, str | None]] = []
+
+    def capture_toggle(asin: str, item: dict | None = None) -> None:
+        """Capture download toggle arguments for assertions."""
+        seen.append((asin, item.get("title") if item else None))
+
+    setattr(cast(Any, app), "_toggle_download_async", capture_toggle)
+    app._table = FakeTable(row_count=1, cursor_row=0)
+    app.current_items = [{"asin": "ASIN", "title": "Book"}]
+    app.action_toggle_download()
+    assert seen == [("ASIN", "Book")]