test: add test for accounts controller

erpnext/regional/germany/test_accounts_controller.py

@@ -0,0 +1,12 @@
+import frappe
+import unittest
+from erpnext.regional.germany.accounts_controller import validate_regional
+
+
+class TestAccountsController(unittest.TestCase):
+
+	def setUp(self):
+		self.sales_invoice = frappe.get_last_doc('Sales Invoice')
+	
+	def test_validate_regional(self):
+		validate_regional(self.sales_invoice)