test: add test case for auto-reservation from PR

erpnext/stock/doctype/stock_reservation_entry/test_stock_reservation_entry.py

@@ -5,6 +5,7 @@ from random import randint
 
 import frappe
 from frappe.tests.utils import FrappeTestCase, change_settings
+from frappe.utils import today
 
 from erpnext.selling.doctype.sales_order.sales_order import create_pick_list, make_delivery_note
 from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
@@ -28,10 +29,6 @@ class TestStockReservationEntry(FrappeTestCase):
 			items={self.sr_item.name: self.sr_item}, warehouse=self.warehouse, qty=100
 		)
 
-	def tearDown(self) -> None:
-		cancel_all_stock_reservation_entries()
-		return super().tearDown()
-
 	@change_settings("Stock Settings", {"allow_negative_stock": 0})
 	def test_validate_stock_reservation_settings(self) -> None:
 		from erpnext.stock.doctype.stock_reservation_entry.stock_reservation_entry import (
@@ -568,6 +565,90 @@ class TestStockReservationEntry(FrappeTestCase):
 				# Test - 3: Reserved Serial/Batch Nos should be equal to Picked Serial/Batch Nos.
 				self.assertSetEqual(picked_sb_details, reserved_sb_details)
 
+	@change_settings(
+		"Stock Settings",
+		{
+			"allow_negative_stock": 0,
+			"enable_stock_reservation": 1,
+			"auto_reserve_serial_and_batch": 1,
+			"pick_serial_and_batch_based_on": "FIFO",
+			"auto_reserve_stock_for_sales_order_on_purchase": 1,
+		},
+	)
+	def test_stock_reservation_from_purchase_receipt(self):
+		from erpnext.buying.doctype.purchase_order.purchase_order import make_purchase_receipt
+		from erpnext.selling.doctype.sales_order.sales_order import make_material_request
+		from erpnext.stock.doctype.material_request.material_request import make_purchase_order
+
+		items_details = create_items()
+		create_material_receipt(items_details, self.warehouse, qty=10)
+
+		item_list = []
+		for item_code, properties in items_details.items():
+			item_list.append(
+				{
+					"item_code": item_code,
+					"warehouse": self.warehouse,
+					"qty": randint(11, 100),
+					"uom": properties.stock_uom,
+					"rate": randint(10, 400),
+				}
+			)
+
+		so = make_sales_order(
+			item_list=item_list,
+			warehouse=self.warehouse,
+		)
+
+		mr = make_material_request(so.name)
+		mr.schedule_date = today()
+		mr.save().submit()
+
+		po = make_purchase_order(mr.name)
+		po.supplier = "_Test Supplier"
+		po.save().submit()
+
+		pr = make_purchase_receipt(po.name)
+		pr.save().submit()
+
+		for item in pr.items:
+			sre, status, reserved_qty = frappe.db.get_value(
+				"Stock Reservation Entry",
+				{
+					"from_voucher_type": "Purchase Receipt",
+					"from_voucher_no": pr.name,
+					"from_voucher_detail_no": item.name,
+				},
+				["name", "status", "reserved_qty"],
+			)
+
+			# Test - 1: SRE status should be `Reserved`.
+			self.assertEqual(status, "Reserved")
+
+			# Test - 2: SRE Reserved Qty should be equal to PR Item Qty.
+			self.assertEqual(reserved_qty, item.qty)
+
+			if item.serial_and_batch_bundle:
+				sb_details = frappe.db.get_all(
+					"Serial and Batch Entry",
+					filters={"parent": item.serial_and_batch_bundle},
+					fields=["serial_no", "batch_no", "qty"],
+					as_list=True,
+				)
+				reserved_sb_details = frappe.db.get_all(
+					"Serial and Batch Entry",
+					filters={"parent": sre},
+					fields=["serial_no", "batch_no", "qty"],
+					as_list=True,
+				)
+
+				# Test - 3: Reserved Serial/Batch Nos should be equal to PR Item Serial/Batch Nos.
+				self.assertEqual(set(sb_details), set(reserved_sb_details))
+
+	def tearDown(self) -> None:
+		cancel_all_stock_reservation_entries()
+		return super().tearDown()
+
 
 def create_items() -> dict:
 	items_properties = [