From 1cb03db43bfb5a55e67e9383a495e4dcb6242ef9 Mon Sep 17 00:00:00 2001
From: khushi8112 <khushirawat23@navgurukul.org>
Date: Fri, 31 Oct 2025 00:56:25 +0530
Subject: [PATCH] test: test cases to validate budget distribution and revision

---
 erpnext/accounts/doctype/budget/budget.py     | 10 ++--
 .../accounts/doctype/budget/test_budget.py    | 56 +++++++++++++++++++
 2 files changed, 60 insertions(+), 6 deletions(-)

diff --git a/erpnext/accounts/doctype/budget/budget.py b/erpnext/accounts/doctype/budget/budget.py
index e0eaff8b4a3..120d78b7430 100644
--- a/erpnext/accounts/doctype/budget/budget.py
+++ b/erpnext/accounts/doctype/budget/budget.py
@@ -81,11 +81,8 @@ class Budget(Document):
 		if not account:
 			return
 
-		from_start, _ = frappe.get_cached_value(
-			"Fiscal Year", self.from_fiscal_year, ["year_start_date", "year_end_date"]
-		)
-		_, to_end = frappe.get_cached_value(
-			"Fiscal Year", self.to_fiscal_year, ["year_start_date", "year_end_date"]
+		year_start_date, year_end_date = get_fiscal_year_date_range(
+			self.from_fiscal_year, self.to_fiscal_year
 		)
 
 		existing_budget = frappe.db.sql(
@@ -103,12 +100,13 @@ class Budget(Document):
 					AND (SELECT year_end_date FROM `tabFiscal Year` WHERE name = to_fiscal_year) >= %s
 				)
 			""",
-			(self.company, budget_against, account, self.name, to_end, from_start),
+			(self.company, budget_against, account, self.name, year_end_date, year_start_date),
 			as_dict=True,
 		)
 
 		if existing_budget:
 			d = existing_budget[0]
+			print(d)
 			frappe.throw(
 				_(
 					"Another Budget record '{0}' already exists against {1} '{2}' and account '{3}' with overlapping fiscal years."
diff --git a/erpnext/accounts/doctype/budget/test_budget.py b/erpnext/accounts/doctype/budget/test_budget.py
index d2723bc0db0..6f1e751993b 100644
--- a/erpnext/accounts/doctype/budget/test_budget.py
+++ b/erpnext/accounts/doctype/budget/test_budget.py
@@ -570,6 +570,62 @@ class TestBudget(ERPNextTestSuite):
 
 		self.assertEqual(total_child_amount, budget.budget_amount)
 
+	def test_fiscal_year_company_mismatch(self):
+		budget = make_budget(budget_against="Cost Center", do_not_save=True, submit_budget=False)
+
+		fy = frappe.get_doc(
+			{
+				"doctype": "Fiscal Year",
+				"year": "2099",
+				"year_start_date": "2099-04-01",
+				"year_end_date": "2100-03-31",
+				"company": "_Test Company 2",
+			}
+		).insert(ignore_permissions=True)
+
+		budget.from_fiscal_year = fy.name
+		budget.to_fiscal_year = fy.name
+
+		with self.assertRaises(frappe.ValidationError):
+			budget.save()
+
+	def test_manual_distribution_total_equals_budget_amount(self):
+		budget = make_budget(
+			budget_against="Cost Center",
+			cost_center="_Test Cost Center - _TC",
+			distribute_equally=0,
+			budget_amount=12000,
+			do_not_save=False,
+			submit_budget=False,
+		)
+
+		for d in budget.budget_distribution:
+			d.amount = 2000
+
+		with self.assertRaises(frappe.ValidationError):
+			budget.save()
+
+	def test_duplicate_budget_validation(self):
+		make_budget(
+			budget_against="Cost Center",
+			distribute_equally=0,
+			budget_amount=15000,
+			do_not_save=False,
+			submit_budget=False,
+		)
+
+		budget = frappe.new_doc("Budget")
+		budget.company = "_Test Company"
+		budget.from_fiscal_year = frappe.db.get_value("Fiscal Year", {}, "name")
+		budget.to_fiscal_year = budget.from_fiscal_year
+		budget.budget_against = "Cost Center"
+		budget.cost_center = "_Test Cost Center - _TC"
+		budget.account = "_Test Account Cost for Goods Sold - _TC"
+		budget.budget_amount = 10000
+
+		with self.assertRaises(frappe.ValidationError):
+			budget.insert()
+
 
 def set_total_expense_zero(posting_date, budget_against_field=None, budget_against_CC=None):
 	if budget_against_field == "project":