'Create Exchange where an exception is NOT raised.'

def test_exchange_declare(self):

    mock_exchange = Mock()
    mock_type = Mock()
    mock_durable = Mock()
    options = {u'durable': mock_durable}
    result = self.my_channel.exchange_declare(mock_exchange, mock_type, mock_durable)
    self.mock_broker.addExchange.assert_called_with(mock_type, mock_exchange, options)
    assert (result is None)
