From 2b0cc765236e5cabadf34947ffdbb65853766b4d Mon Sep 17 00:00:00 2001
From: David <dgx.arnold@gmail.com>
Date: Tue, 24 Sep 2024 15:59:41 +0200
Subject: [PATCH] test: add test for item tax detail

---
 .../tests/test_item_wise_tax_details.py       | 100 ++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 erpnext/controllers/tests/test_item_wise_tax_details.py

diff --git a/erpnext/controllers/tests/test_item_wise_tax_details.py b/erpnext/controllers/tests/test_item_wise_tax_details.py
new file mode 100644
index 00000000000..87123bab25c
--- /dev/null
+++ b/erpnext/controllers/tests/test_item_wise_tax_details.py
@@ -0,0 +1,100 @@
+import json
+
+import frappe
+from frappe.tests.utils import FrappeTestCase
+
+from erpnext.controllers.taxes_and_totals import calculate_taxes_and_totals
+
+
+class TestTaxesAndTotals(FrappeTestCase):
+	def setUp(self):
+		self.doc = frappe.get_doc(
+			{
+				"doctype": "Sales Invoice",
+				"customer": "_Test Customer",
+				"company": "_Test Company",
+				"currency": "INR",
+				"conversion_rate": 1,
+				"items": [
+					{
+						"item_code": "_Test Item",
+						"qty": 1,
+						"rate": 100,
+						"income_account": "Sales - _TC",
+						"expense_account": "Cost of Goods Sold - _TC",
+						"cost_center": "_Test Cost Center - _TC",
+					}
+				],
+				"taxes": [],
+			}
+		)
+
+	def test_item_wise_tax_detail(self):
+		# Test On Net Total
+		self.doc.append(
+			"taxes",
+			{
+				"charge_type": "On Net Total",
+				"account_head": "_Test Account VAT - _TC",
+				"cost_center": "_Test Cost Center - _TC",
+				"description": "VAT",
+				"rate": 10,
+			},
+		)
+
+		# Test On Previous Row Amount
+		self.doc.append(
+			"taxes",
+			{
+				"charge_type": "On Previous Row Amount",
+				"account_head": "_Test Account Service Tax - _TC",
+				"cost_center": "_Test Cost Center - _TC",
+				"description": "Service Tax",
+				"rate": 14,
+				"row_id": 1,
+			},
+		)
+
+		# Test On Previous Row Total
+		self.doc.append(
+			"taxes",
+			{
+				"charge_type": "On Previous Row Total",
+				"account_head": "_Test Account Customs Duty - _TC",
+				"cost_center": "_Test Cost Center - _TC",
+				"description": "Customs Duty",
+				"rate": 5,
+				"row_id": 2,
+			},
+		)
+
+		# Test On Item Quantity
+		self.doc.append(
+			"taxes",
+			{
+				"charge_type": "On Item Quantity",
+				"account_head": "_Test Account Shipping - _TC",
+				"cost_center": "_Test Cost Center - _TC",
+				"description": "Shipping",
+				"rate": 50,
+			},
+		)
+
+		calculate_taxes_and_totals(self.doc)
+
+		expected_values = {
+			"VAT": {"tax_rate": 10, "tax_amount": 10, "net_amount": 100},
+			"Service Tax": {"tax_rate": 14, "tax_amount": 1.4, "net_amount": 10},
+			"Customs Duty": {"tax_rate": 5, "tax_amount": 5.57, "net_amount": 111.4},
+			"Shipping": {"tax_rate": 50, "tax_amount": 50, "net_amount": 0.0},  # net_amount: here qty
+		}
+
+		for tax in self.doc.taxes:
+			self.assertIn(tax.description, expected_values)
+			item_wise_tax_detail = json.loads(tax.item_wise_tax_detail)
+			tax_detail = item_wise_tax_detail[self.doc.items[0].item_code]
+			self.assertAlmostEqual(tax_detail[0], expected_values[tax.description]["tax_rate"])
+			self.assertAlmostEqual(tax_detail[1], expected_values[tax.description]["tax_amount"])
+			self.assertAlmostEqual(tax_detail[2], expected_values[tax.description]["net_amount"])
+			# Check if net_total is set for each tax
+			self.assertEqual(tax.net_amount, expected_values[tax.description]["net_amount"])