def test_serialize_attachments(self):
form_id = uuid.uuid4().hex
form_xml = get_simple_form_xml(form_id)
submit_form_locally(form_xml, domain=self.domain)
form = FormAccessorSQL().get_form(form_id)
with self.assertNumQueries(1, using=form.db):
# 1 query to fetch the form.xml attachment. The rest are lazy
form_json = form.to_json(include_attachments=True)
form_xml = form.get_attachment_meta('form.xml')
with self.assertNumQueries(1, using=form.db):
# lazy evaluation of attachments list
self.assertEqual(form_json['external_blobs']['form.xml']['id'],
str(form_xml.key))
# this query goes through pl_proxy
with self.assertNumQueries(1, using=form.db):
# lazy evaluation of history
self.assertEqual(0, len(form_json['history']))
