1 files changed, 11 insertions, 0 deletions
diff --git a/tests/admin_views/forms.py b/tests/admin_views/forms.py
new file mode 100644
index 0000000000..e8493df95b
--- /dev/null
+++ b/tests/admin_views/forms.py
@@ -0,0 +1,11 @@
+from django import forms
+from django.contrib.admin.forms import AdminAuthenticationForm
+
+
+class CustomAdminAuthenticationForm(AdminAuthenticationForm):
+
+    def clean_username(self):
+        username = self.cleaned_data.get('username')
+        if username == 'customform':
+            raise forms.ValidationError('custom form error')
+        return username