def test_output(self, json, header):
"""
Test json encoding.
"""
data = {'test': 1234}
json.dumps.return_value = repr(data)
header.side_effect = ['h1', 'h2']
# test
controller = JSONController()
encoded = controller._output(data)
# validation
json.dumps.assert_called_once_with(data, default=json_encoder)
self.assertEqual(encoded, json.dumps.return_value)
self.assertEqual(header.call_args_list, [
(('Content-Type', 'application/json'), {}),
(('Content-Length', len(encoded)), {}),
])
