74일차 정답 공개 (LAB-A · VIBE-A · answers · tver), Lab 03 예제 3 이해하기 보강

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Last3Mon/74/tver/tests/test_app.py

@@ -0,0 +1,34 @@
+"""R8: versions list, change tree, detail of the chosen change, [s] saves."""
+import asyncio
+import json
+
+from textual.widgets import ListView, Tree
+
+from tver.app import VersionApp
+from tver.store import Store
+
+
+async def wait_for(pilot, check):
+    for _ in range(60):
+        await asyncio.sleep(0.05)
+        await pilot.pause()
+        if check():
+            return True
+    return False
+
+
+async def test_versions_tree_and_save(work, store_dir, v2):
+    store = Store(store_dir)
+    store.save(work / "helpdesk.json")
+    (work / "helpdesk.json").write_text(json.dumps(v2), encoding="utf-8")
+    app = VersionApp(str(work / "helpdesk.json"), store)
+    async with app.run_test() as pilot:
+        assert len(app.query_one(ListView).children) == 1
+        await pilot.press("s")
+        assert await wait_for(pilot, lambda: len(app.query_one(ListView).children) == 2)
+        assert await wait_for(pilot, lambda: "model 1 · prompt 1 · flow 5" in str(app.query_one(Tree).root.label))
+        tree = app.query_one(Tree)
+        tree.focus()
+        await pilot.press("down", "down")
+        await pilot.pause()
+        assert str(app.query_one("#detail").render()).strip() != ""