feat(gp): test for inv and dn related via so

(cherry picked from commit 1f6ab86)

erpnext/accounts/report/gross_profit/test_gross_profit.py

@@ -302,3 +302,79 @@ def test_bundled_delivery_note_with_different_warehouses(self):
 
 		columns, data = execute(filters=filters)
 		self.assertGreater(len(data), 0)
+
+	def test_order_connected_dn_and_inv(self):
+		from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
+		"""
+			Test gp calculation when invoice and delivery note aren't directly connected.
+			SO -- INV
+			|
+			DN
+		"""
+		se = make_stock_entry(
+			company=self.company,
+			item_code=self.item,
+			target=self.warehouse,
+			qty=3,
+			basic_rate=100,
+			do_not_submit=True,
+		)
+		item = se.items[0]
+		se.append(
+			"items",
+			{
+				"item_code": item.item_code,
+				"s_warehouse": item.s_warehouse,
+				"t_warehouse": item.t_warehouse,
+				"qty": 10,
+				"basic_rate": 200,
+				"conversion_factor": item.conversion_factor or 1.0,
+				"transfer_qty": flt(item.qty) * (flt(item.conversion_factor) or 1.0),
+				"serial_no": item.serial_no,
+				"batch_no": item.batch_no,
+				"cost_center": item.cost_center,
+				"expense_account": item.expense_account,
+			},
+		)
+		se = se.save().submit()
+
+		so = make_sales_order(
+			customer=self.customer,
+			company=self.company,
+			warehouse=self.warehouse,
+			item=self.item,
+			qty=4,
+			do_not_save=False,
+			do_not_submit=False,
+		)
+
+		from erpnext.selling.doctype.sales_order.sales_order import make_delivery_note, make_sales_invoice
+		make_delivery_note(so.name).submit()
+		sinv = make_sales_invoice(so.name).submit()
+
+		filters = frappe._dict(
+			company=self.company, from_date=nowdate(), to_date=nowdate(), group_by="Invoice"
+		)
+
+		columns, data = execute(filters=filters)
+
+		# Without Delivery Note, buying rate should be 150
+		expected_entry = {
+			"parent_invoice": sinv.name,
+			"currency": "INR",
+			"sales_invoice": self.item,
+			"customer": self.customer,
+			"posting_date": frappe.utils.datetime.date.fromisoformat(nowdate()),
+			"item_code": self.item,
+			"item_name": self.item,
+			"warehouse": "Stores - _GP",
+			"qty": 4.0,
+			"avg._selling_rate": 100.0,
+			"valuation_rate": 125.0,
+			"selling_amount": 400.0,
+			"buying_amount": 500.0,
+			"gross_profit": -100.0,
+			"gross_profit_%": -25.0,
+		}
+		gp_entry = [x for x in data if x.parent_invoice == sinv.name]
+		self.assertDictContainsSubset(expected_entry, gp_entry[0])