3 files changed, 40 insertions(+), 0 deletions(-)

M src/groceries/model.py
M src/groceries/web/api.py
M tests/test_rest_server.py

@@ 51,6 51,7 @@ class GroceryList:
 
         updated_item = attr.evolve(item, **fields)
         self._repo.update(item_name, updated_item)
+        return updated_item
 
     def delete_item(self, item_name):
         try:

@@ 66,6 66,20 @@ def get_item(name):
     return dictify(item)
 
 
+@bp.route("/items/<name>", methods=["PUT"])
+def update_item(name):
+    grocery_list = GroceryList(current_app.config["BACKEND"])
+
+    try:
+        updated_item = grocery_list.update_item(name, **request.json)
+    except TypeError:
+        abort(400, description="Invalid fields in request")
+    except LookupError as err:
+        abort(404, description=str(err))
+
+    return dictify(updated_item)
+
+
 @bp.route("/items/<name>", methods=["DELETE"])
 def delete_item(name):
     grocery_list = GroceryList(current_app.config["BACKEND"])

@@ 120,3 120,28 @@ def test_create_existing_item(client):
     assert response.get_json() == {
         "error": "400 Bad Request: 'produce: apples' already in grocery list."
     }
+
+
+def test_update_item(client):
+    item = client.get("/api/items/apples").get_json()
+    response = client.put("/api/items/apples", json={"section": "fruit"})
+    assert response.status_code == 200
+    expected = dict(item, section="fruit")
+    assert response.get_json() == expected
+    assert client.get("/api/items/apples").get_json() == expected
+
+
+def test_update_unknown_item(client):
+    response = client.put("/api/items/jabberwocky", json={"section": "pets"})
+    assert response.status_code == 404
+    assert response.get_json() == {
+        "error": "404 Not Found: 'jabberwocky' not found in grocery list."
+    }
+
+
+def test_update_item_with_invalid_fields(client):
+    response = client.put("/api/items/apples", json={"variety": "granny smith"})
+    assert response.status_code == 400
+    assert response.get_json() == {
+        "error": "400 Bad Request: Invalid fields in request"
+    }