chore: add validation for gross purchase amount (#21535)

* chore: add validation for gross purchase amount

* fix: tests

erpnext/assets/doctype/asset/asset.py

@@ -22,6 +22,7 @@ class Asset(AccountsController):
 		self.validate_item()
 		self.set_missing_values()
 		self.prepare_depreciation_data()
+		self.validate_gross_and_purchase_amount()
 		if self.get("schedules"):
 			self.validate_expected_value_after_useful_life()
 
@@ -123,6 +124,12 @@ class Asset(AccountsController):
 
 		if self.available_for_use_date and getdate(self.available_for_use_date) < getdate(self.purchase_date):
 			frappe.throw(_("Available-for-use Date should be after purchase date"))
+	
+	def validate_gross_and_purchase_amount(self):
+		if self.gross_purchase_amount and self.gross_purchase_amount != self.purchase_receipt_amount:
+			frappe.throw(_("Gross Purchase Amount should be {} to purchase amount of one single Asset. {}\
+				Please do not book expense of multiple assets against one single Asset.")
+				.format(frappe.bold("equal"), "<br>"), title=_("Invalid Gross Purchase Amount"))
 
 	def cancel_auto_gen_movement(self):
 		movements = frappe.db.sql(

erpnext/assets/doctype/asset/test_asset.py

@@ -82,7 +82,6 @@ class TestAsset(unittest.TestCase):
 		doc.set_missing_values()
 		self.assertEquals(doc.items[0].is_fixed_asset, 1)
 
-
 	def test_schedule_for_straight_line_method(self):
 		pr = make_purchase_receipt(item_code="Macbook Pro",
 			qty=1, rate=100000.0, location="Test Location")
@@ -599,6 +598,7 @@ def create_asset(**args):
 		"purchase_date": "2015-01-01",
 		"calculate_depreciation": 0,
 		"gross_purchase_amount": 100000,
+		"purchase_receipt_amount": 100000,
 		"expected_value_after_useful_life": 10000,
 		"warehouse": args.warehouse or "_Test Warehouse - _TC",
 		"available_for_use_date": "2020-06-06",