test: timeout certain tests in work order to avoid stuck tests (#28666)

[skip ci]

erpnext/manufacturing/doctype/work_order/test_work_order.py

@@ -21,9 +21,10 @@ from erpnext.stock.doctype.item.test_item import create_item, make_item
 from erpnext.stock.doctype.stock_entry import test_stock_entry
 from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
 from erpnext.stock.utils import get_bin
+from erpnext.tests.utils import ERPNextTestCase, timeout
 
 
-class TestWorkOrder(unittest.TestCase):
+class TestWorkOrder(ERPNextTestCase):
 	def setUp(self):
 		self.warehouse = '_Test Warehouse 2 - _TC'
 		self.item = '_Test Item'
@@ -376,6 +377,7 @@ class TestWorkOrder(unittest.TestCase):
 		self.assertEqual(len(ste.additional_costs), 1)
 		self.assertEqual(ste.total_additional_costs, 1000)
 
+	@timeout(seconds=60)
 	def test_job_card(self):
 		stock_entries = []
 		bom = frappe.get_doc('BOM', {
@@ -769,6 +771,7 @@ class TestWorkOrder(unittest.TestCase):
 			total_pl_qty
 		)
 
+	@timeout(seconds=60)
 	def test_job_card_scrap_item(self):
 		items = ['Test FG Item for Scrap Item Test', 'Test RM Item 1 for Scrap Item Test',
 			'Test RM Item 2 for Scrap Item Test']

erpnext/tests/utils.py

@@ -2,6 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 import copy
+import signal
 import unittest
 from contextlib import contextmanager
 from typing import Any, Dict, NewType, Optional
@@ -135,3 +136,23 @@ def execute_script_report(
 			report_execute_fn(filter_with_optional_param)
 
 	return report_data
+
+
+def timeout(seconds=30, error_message="Test timed out."):
+	""" Timeout decorator to ensure a test doesn't run for too long.
+
+		adapted from https://stackoverflow.com/a/2282656"""
+	def decorator(func):
+		def _handle_timeout(signum, frame):
+			raise Exception(error_message)
+
+		def wrapper(*args, **kwargs):
+			signal.signal(signal.SIGALRM, _handle_timeout)
+			signal.alarm(seconds)
+			try:
+				result = func(*args, **kwargs)
+			finally:
+				signal.alarm(0)
+			return result
+		return wrapper
+	return decorator