test: validating custom accouting dimension in opening invoice tool

 - create new dimension 'department'
 - assign and validate department in opening invoices
diff --git a/erpnext/accounts/doctype/opening_invoice_creation_tool/test_opening_invoice_creation_tool.py b/erpnext/accounts/doctype/opening_invoice_creation_tool/test_opening_invoice_creation_tool.py
index b5aae98..41c47c5 100644
--- a/erpnext/accounts/doctype/opening_invoice_creation_tool/test_opening_invoice_creation_tool.py
+++ b/erpnext/accounts/doctype/opening_invoice_creation_tool/test_opening_invoice_creation_tool.py
@@ -11,17 +11,19 @@
 	get_temporary_opening_account,
 )
 
-test_dependencies = ["Customer", "Supplier"]
+from erpnext.accounts.doctype.accounting_dimension.test_accounting_dimension import create_dimension
+
+test_dependencies = ["Customer", "Supplier", "Accounting Dimension"]
 
 class TestOpeningInvoiceCreationTool(unittest.TestCase):
 	def setUp(self):
 		if not frappe.db.exists("Company", "_Test Opening Invoice Company"):
 			make_company()
 
-	def make_invoices(self, invoice_type="Sales", company=None, party_1=None, party_2=None, invoice_number=None):
+	def make_invoices(self, invoice_type="Sales", company=None, party_1=None, party_2=None, invoice_number=None, department=None):
 		doc = frappe.get_single("Opening Invoice Creation Tool")
 		args = get_opening_invoice_creation_dict(invoice_type=invoice_type, company=company,
-			party_1=party_1, party_2=party_2, invoice_number=invoice_number)
+			party_1=party_1, party_2=party_2, invoice_number=invoice_number, department=department)
 		doc.update(args)
 		return doc.make_invoices()
 
@@ -106,6 +108,18 @@
 			doc = frappe.get_doc('Sales Invoice', inv)
 			doc.cancel()
 
+	def test_opening_invoice_with_accounting_dimension(self):
+		# new dimensions department and location are created
+		create_dimension()
+		invoices = self.make_invoices(invoice_type="Sales", company="_Test Opening Invoice Company", department='Sales - _TOIC')
+
+		expected_value = {
+			"keys": ["customer", "outstanding_amount", "status", "department"],
+			0: ["_Test Customer", 300, "Overdue", "Sales - _TOIC"],
+			1: ["_Test Customer 1", 250, "Overdue", "Sales - _TOIC"],
+		}
+		self.check_expected_values(invoices, expected_value, invoice_type="Sales")
+
 def get_opening_invoice_creation_dict(**args):
 	party = "Customer" if args.get("invoice_type", "Sales") == "Sales" else "Supplier"
 	company = args.get("company", "_Test Company")