You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: setting_engine_test.rs
    path of file: ./repos/webrtc/webrtc/src/api/setting_engine
    
    the code of the file until where you have to start completion: use std::sync::atomic::Ordering;

use super::*;
use crate::api::media_engine::MediaEngine;
use crate::api::APIBuilder;
use crate::peer_connection::peer_connection_test::*;
use crate::rtp_tr
    
fn test_detach_data_channels() -> Result<()> {
    let mut s = SettingEngine::default();

    assert!(
        !s.detach.data_channels,
        "SettingEngine defaults aren't as expected."
    );

    s.detach_data_channels();

    assert!(
        s.detach.data_channels,
        "Failed to enable detached data channels."
    );

    Ok(())
}