'Actions come from the form whose submit button was pressed (#10618).'

def test_multiple_actions_form(self):

    action_data = {ACTION_CHECKBOX_NAME: [self.s1.pk], 'action': ['external_mail', 'delete_selected'], 'index': 0}
    self.client.post(reverse('admin:admin_views_externalsubscriber_changelist'), action_data)
    self.assertEqual(len(mail.outbox), 1)
    self.assertEqual(mail.outbox[0].subject, 'Greetings    from    a    function    action')
