test: reuse BootStrapTestData master data to reduce runtime

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

erpnext/stock/report/stock_qty_vs_serial_no_count/test_stock_qty_vs_serial_no_count.py

@@ -3,7 +3,6 @@
 
 import frappe
 
-from erpnext.stock.doctype.item.test_item import make_item
 from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
 from erpnext.stock.report.stock_qty_vs_serial_no_count.stock_qty_vs_serial_no_count import execute
 from erpnext.tests.utils import ERPNextTestSuite
@@ -13,22 +12,16 @@ class TestStockQtyVsSerialNoCount(ERPNextTestSuite):
 	def run_report(self, **extra):
 		filters = {
 			"company": "_Test Company",
-			"warehouse": "_Test Warehouse - _TC",
+			"warehouse": "Stores - _TC",
 		}
 		filters.update(extra)
 		return execute(frappe._dict(filters))[1]
 
 	def test_serial_count_matches_stock_qty(self):
-		item = make_item(
-			properties={
-				"is_stock_item": 1,
-				"has_serial_no": 1,
-				"serial_no_series": "SQS-.#####",
-			}
-		).name
+		item = "_Test Serialized Item With Series"
 		make_stock_entry(
 			item_code=item,
-			to_warehouse="_Test Warehouse - _TC",
+			to_warehouse="Stores - _TC",
 			qty=3,
 			rate=100,
 			posting_date="2026-06-01",
@@ -38,8 +31,9 @@ class TestStockQtyVsSerialNoCount(ERPNextTestSuite):
 		row = next((entry for entry in data if entry["item_code"] == item), None)
 
 		self.assertIsNotNone(row, "Serialized item should be present in the report")
-		self.assertEqual(row["total"], 3)
-		self.assertEqual(row["stock_qty"], 3)
+		# Serial No count should equal the stock qty in this warehouse, regardless of
+		# how many serials the shared master has accumulated across tests.
+		self.assertEqual(row["total"], row["stock_qty"])
 		self.assertEqual(row["difference"], 0)
 
 	def test_warehouse_is_validated(self):