Closes #5016: assertHttpStatus() should report form validation errors

netbox/utilities/testing/utils.py

@@ -1,4 +1,5 @@
 import logging
+import re
 from contextlib import contextmanager
 
 from django.contrib.auth.models import Permission, User
@@ -43,6 +44,14 @@ def create_test_user(username='testuser', permissions=None):
     return user
 
 
+def extract_form_failures(content):
+    """
+    Given raw HTML content from an HTTP response, return a list of form errors.
+    """
+    FORM_ERROR_REGEX = r'<!-- FORM-ERROR (.*) -->'
+    return re.findall(FORM_ERROR_REGEX, str(content))
+
+
 @contextmanager
 def disable_warnings(logger_name):
     """