test: tie breaking in SLEs (#30796)

[skip ci]

erpnext/stock/doctype/stock_ledger_entry/test_stock_ledger_entry.py

@@ -2,12 +2,12 @@
 # See license.txt
 
 import json
-from datetime import timedelta
 from uuid import uuid4
 
 import frappe
 from frappe.core.page.permission_manager.permission_manager import reset
 from frappe.custom.doctype.property_setter.property_setter import make_property_setter
+from frappe.query_builder.functions import CombineDatetime
 from frappe.tests.utils import FrappeTestCase
 from frappe.utils import add_days, today
 from frappe.utils.data import add_to_date
@@ -1126,6 +1126,63 @@ class TestStockLedgerEntry(FrappeTestCase):
 		# original amount
 		self.assertEqual(50, _get_stock_credit(final_consumption))
 
+	def test_tie_breaking(self):
+		frappe.flags.dont_execute_stock_reposts = True
+		self.addCleanup(frappe.flags.pop, "dont_execute_stock_reposts")
+
+		item = make_item().name
+		warehouse = "_Test Warehouse - _TC"
+
+		posting_date = "2022-01-01"
+		posting_time = "00:00:01"
+		sle = frappe.qb.DocType("Stock Ledger Entry")
+
+		def ordered_qty_after_transaction():
+			return (
+				frappe.qb.from_(sle)
+				.select("qty_after_transaction")
+				.where((sle.item_code == item) & (sle.warehouse == warehouse) & (sle.is_cancelled == 0))
+				.orderby(CombineDatetime(sle.posting_date, sle.posting_time))
+				.orderby(sle.creation)
+			).run(pluck=True)
+
+		first = make_stock_entry(
+			item_code=item,
+			to_warehouse=warehouse,
+			qty=10,
+			posting_time=posting_time,
+			posting_date=posting_date,
+			do_not_submit=True,
+		)
+		second = make_stock_entry(
+			item_code=item,
+			to_warehouse=warehouse,
+			qty=1,
+			posting_date=posting_date,
+			posting_time=posting_time,
+			do_not_submit=True,
+		)
+
+		first.submit()
+		second.submit()
+
+		self.assertEqual([10, 11], ordered_qty_after_transaction())
+
+		first.cancel()
+		self.assertEqual([1], ordered_qty_after_transaction())
+
+		backdated = make_stock_entry(
+			item_code=item,
+			to_warehouse=warehouse,
+			qty=1,
+			posting_date="2021-01-01",
+			posting_time=posting_time,
+		)
+		self.assertEqual([1, 2], ordered_qty_after_transaction())
+
+		backdated.cancel()
+		self.assertEqual([1], ordered_qty_after_transaction())
+
 
 def create_repack_entry(**args):
 	args = frappe._dict(args)