Fix task bugs and add search filter

app/service.py

@@ -10,15 +10,15 @@ def list_tasks(status: str | None = None, q: str | None = None) -> list[dict[str
     """Return task records, optionally filtered by status and search text."""
     tasks = load_tasks()
     filtered: list[dict[str, Any]] = []
+    query = q.casefold() if q else None
 
     for task in tasks:
-        # Instructor note: intentional bug for the lab.
-        # This uses the literal string "status" instead of the query parameter value.
-        if status and task["status"] != "status":
+        if status and task["status"] != status:
+            continue
+
+        if query and query not in task["title"].casefold() and query not in task["description"].casefold():
             continue
 
-        # Instructor note: partial feature for the lab.
-        # The route already accepts `q`, but search is not implemented yet.
         filtered.append(task)
 
     return filtered
@@ -53,12 +53,9 @@ def complete_task(task_id: int) -> dict[str, Any] | None:
 
     for task in tasks:
         if task["id"] == task_id:
-            updated_task = dict(task)
-            updated_task["status"] = "done"
-            updated_task["completed_at"] = datetime.now(timezone.utc).isoformat()
-
-            # Instructor note: intentional bug for the lab.
-            # The updated task is returned, but the stored list is never updated or saved.
-            return updated_task
+            task["status"] = "done"
+            task["completed_at"] = datetime.now(timezone.utc).isoformat()
+            save_tasks(tasks)
+            return task
 
     return None

tests/__init__.py

@@ -0,0 +1 @@
+

tests/test_service.py

@@ -0,0 +1,82 @@
+import json
+from pathlib import Path
+from tempfile import TemporaryDirectory
+import unittest
+from unittest.mock import patch
+
+from app.service import complete_task, list_tasks
+from app.store import load_tasks
+
+
+class ListTasksTests(unittest.TestCase):
+    def test_filters_tasks_by_requested_status(self) -> None:
+        tasks = [
+            {"id": 1, "status": "open"},
+            {"id": 2, "status": "done"},
+            {"id": 3, "status": "open"},
+        ]
+
+        with patch("app.service.load_tasks", return_value=tasks):
+            result = list_tasks(status="open")
+
+        self.assertEqual([task["id"] for task in result], [1, 3])
+
+    def test_searches_task_titles_case_insensitively(self) -> None:
+        tasks = [
+            {"id": 1, "title": "Write launch recap", "description": "Summary", "status": "open"},
+            {"id": 2, "title": "Plan workshop", "description": "Agenda", "status": "open"},
+        ]
+
+        with patch("app.service.load_tasks", return_value=tasks):
+            result = list_tasks(q="LAUNCH")
+
+        self.assertEqual([task["id"] for task in result], [1])
+
+    def test_searches_task_descriptions_case_insensitively(self) -> None:
+        tasks = [
+            {"id": 1, "title": "Write recap", "description": "Product launch summary", "status": "open"},
+            {"id": 2, "title": "Plan workshop", "description": "Agenda", "status": "open"},
+        ]
+
+        with patch("app.service.load_tasks", return_value=tasks):
+            result = list_tasks(q="LAUNCH")
+
+        self.assertEqual([task["id"] for task in result], [1])
+
+    def test_combines_search_with_status_filter(self) -> None:
+        tasks = [
+            {"id": 1, "title": "Plan workshop", "description": "Agenda", "status": "open"},
+            {"id": 2, "title": "Write recap", "description": "Summary", "status": "open"},
+            {"id": 3, "title": "Plan launch", "description": "Agenda", "status": "done"},
+        ]
+
+        with patch("app.service.load_tasks", return_value=tasks):
+            result = list_tasks(status="open", q="PLAN")
+
+        self.assertEqual([task["id"] for task in result], [1])
+
+
+class CompleteTaskTests(unittest.TestCase):
+    def test_persists_completed_task(self) -> None:
+        with TemporaryDirectory() as directory:
+            data_file = Path(directory) / "tasks.json"
+            data_file.write_text(
+                json.dumps(
+                    [
+                        {
+                            "id": 1,
+                            "status": "open",
+                            "completed_at": None,
+                        }
+                    ]
+                ),
+                encoding="utf-8",
+            )
+
+            with patch("app.store.DATA_FILE", data_file):
+                completed_task = complete_task(1)
+                stored_task = load_tasks()[0]
+
+        self.assertEqual(completed_task["status"], "done")
+        self.assertEqual(stored_task["status"], "done")
+        self.assertIsNotNone(stored_task["completed_at"])