refactor: Use IntegrationTestCase in multiple files

Signed-off-by: David <dgx.arnold@gmail.com>

erpnext/accounts/test/test_utils.py

@@ -2,6 +2,7 @@ import unittest
 
 import frappe
 from frappe.test_runner import make_test_objects
+from frappe.tests import IntegrationTestCase
 
 from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
 from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
@@ -16,7 +17,7 @@ from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt import make_pu
 from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
 
 
-class TestUtils(unittest.TestCase):
+class TestUtils(IntegrationTestCase):
 	@classmethod
 	def setUpClass(cls):
 		super().setUpClass()