Fix Costco hash-size weight parsing

tests/test_costco_pipeline.py

@@ -346,6 +346,32 @@ class CostcoPipelineTests(unittest.TestCase):
         )
         self.assertEqual("LIFE 6'TABLE MDL", logistics["item_name_norm"])
 
+    def test_costco_hash_weight_parses_into_weight_basis(self):
+        row = enrich_costco.parse_costco_item(
+            order_id="abc",
+            order_date="2024-11-29",
+            raw_path=Path("costco_output/raw/abc.json"),
+            line_no=4,
+            item={
+                "itemNumber": "999",
+                "itemDescription01": "25# FLOUR ALL-PURPOSE HARV P98/100",
+                "itemDescription02": None,
+                "itemDepartmentNumber": 14,
+                "transDepartmentNumber": 14,
+                "unit": 1,
+                "itemIdentifier": "E",
+                "amount": 8.79,
+                "itemUnitPriceAmount": 8.79,
+            },
+        )
+        self.assertEqual("FLOUR ALL-PURPOSE HARV", row["item_name_norm"])
+        self.assertEqual("25", row["size_value"])
+        self.assertEqual("lb", row["size_unit"])
+        self.assertEqual("weight", row["measure_type"])
+        self.assertEqual("25", row["normalized_quantity"])
+        self.assertEqual("lb", row["normalized_quantity_unit"])
+        self.assertEqual("0.3516", row["price_per_lb"])
+
     def test_build_items_enriched_matches_discount_to_item(self):
         with tempfile.TemporaryDirectory() as tmpdir:
             raw_dir = Path(tmpdir) / "raw"