From 94ae0988549ff0e411d9157acbe84795e59708b0 Mon Sep 17 00:00:00 2001
From: Rehan Ansari <rehanrehman389@gmail.com>
Date: Wed, 15 Oct 2025 23:33:02 +0530
Subject: [PATCH] test: fiscal year overlap validation for company-specific
 years

---
 .../doctype/fiscal_year/test_fiscal_year.py   | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/erpnext/accounts/doctype/fiscal_year/test_fiscal_year.py b/erpnext/accounts/doctype/fiscal_year/test_fiscal_year.py
index 0f0a6837cba..999924a60eb 100644
--- a/erpnext/accounts/doctype/fiscal_year/test_fiscal_year.py
+++ b/erpnext/accounts/doctype/fiscal_year/test_fiscal_year.py
@@ -25,6 +25,35 @@ class TestFiscalYear(IntegrationTestCase):
 
 		self.assertRaises(frappe.exceptions.InvalidDates, fy.insert)
 
+	def test_company_fiscal_year_overlap(self):
+		for name in ["_Test Global FY 2001", "_Test Company FY 2001"]:
+			if frappe.db.exists("Fiscal Year", name):
+				frappe.delete_doc("Fiscal Year", name)
+
+		global_fy = frappe.get_doc(
+			{
+				"doctype": "Fiscal Year",
+				"year": "_Test Global FY 2001",
+				"year_start_date": "2001-04-01",
+				"year_end_date": "2002-03-31",
+			}
+		)
+		global_fy.insert()
+
+		company_fy = frappe.get_doc(
+			{
+				"doctype": "Fiscal Year",
+				"year": "_Test Company FY 2001",
+				"year_start_date": "2001-01-01",
+				"year_end_date": "2001-12-31",
+				"companies": [{"company": "_Test Company"}],
+			}
+		)
+
+		company_fy.insert()
+		self.assertTrue(frappe.db.exists("Fiscal Year", global_fy.name))
+		self.assertTrue(frappe.db.exists("Fiscal Year", company_fy.name))
+
 
 def test_record_generator():
 	test_records = [