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: control_test.rs
    path of file: ./repos/webrtc/ice/src/control
    
    the code of the file until where you have to start completion: use super::*;
use crate::error::Result;

#[test]
fn test_controlled_get_from() -> Result<()> {
    let mut m = Message::new();
    let mut c = AttrControlled(4321);
    let result = c.get_from(&m);
    if let Err(err) = result {
        assert_eq!(stun::Error::ErrAttributeNotFound, err, "unexpected error");
    } else {
        panic!("expected error, but got ok");
    }

    m.build(&[Box::new(BINDING_REQUEST), Box::new(c)])?;

    let mut m1 = Message::new();
    m1.write(&m.raw)?;

    let mut c1 = AttrControlled::default();
    c1.get_from(&m1)?;

    assert_eq!(c1, c, "not equal");

    //"IncorrectSize"
    {
        let mut m3 = Message::new();
        m3.add(ATTR_ICE_CONTROLLED, &[0; 100]);
        let mut c2 = AttrControlled::default();
        let result = c2.get_from(&m3);
        if let Err(err) = result {
            assert!(is_attr_size_invalid(&err), "should error");
        } else {
            panic!("expected error, but got ok");
        }
    }

    Ok(())
}

#[test]
fn test_controlling_get_from() -> Result<()> {
    let mut m = Message::new();
    let mut c = AttrControlling(4321);
    let result = c.get_from(&m);
    if let Err(err) = result {
        assert_eq!(stun::Error::ErrAttributeNotFound, err, "unexpected error");
    } else {
        panic!("expected error, but got ok");
    }

    m.build(&[Box::new(BINDING_REQUEST), Box::new(c)])?;

    let mut m1 = Message::new();
    m1.write(&m.raw)?;

    let mut c1 = AttrControlling::default();
    c1.get
    
fn test_control_get_from() -> Result<()> {
    //"Blank"
    {
        let m = Message::new();
        let mut c = AttrControl::default();
        let result = c.get_from(&m);
        if let Err(err) = result {
            assert_eq!(stun::Error::ErrAttributeNotFound, err, "unexpected error");
        } else {
            panic!("expected error, but got ok");
        }
    }
    //"Controlling"
    {
        let mut m = Message::new();
        let mut c = AttrControl::default();
        let result = c.get_from(&m);
        if let Err(err) = result {
            assert_eq!(stun::Error::ErrAttributeNotFound, err, "unexpected error");
        } else {
            panic!("expected error, but got ok");
        }

        c.role = Role::Controlling;
        c.tie_breaker = TieBreaker(4321);

        m.build(&[Box::new(BINDING_REQUEST), Box::new(c)])?;

        let mut m1 = Message::new();
        m1.write(&m.raw)?;

        let mut c1 = AttrControl::default();
        c1.get_from(&m1)?;

        assert_eq!(c1, c, "not equal");

        //"IncorrectSize"
        {
            let mut m3 = Message::new();
            m3.add(ATTR_ICE_CONTROLLING, &[0; 100]);
            let mut c2 = AttrControl::default();
            let result = c2.get_from(&m3);
            if let Err(err) = result {
                assert!(is_attr_size_invalid(&err), "should error");
            } else {
                panic!("expected error, but got ok");
            }
        }
    }

    //"Controlled"
    {
        let mut m = Message::new();
        let mut c = AttrControl::default();
        let result = c.get_from(&m);
        if let Err(err) = result {
            assert_eq!(stun::Error::ErrAttributeNotFound, err, "unexpected error");
        } else {
            panic!("expected error, but got ok");
        }

        c.role = Role::Controlled;
        c.tie_breaker = TieBreaker(1234);

        m.build(&[Box::new(BINDING_REQUEST), Box::new(c)])?;

        let mut m1 = Message::new();
        m1.write(&m.raw)?;

        let mut c1 = AttrControl::default();
        c1.get_from(&m1)?;

        assert_eq!(c1, c, "not equal");

        //"IncorrectSize"
        {
            let mut m3 = Message::new();
            m3.add(ATTR_ICE_CONTROLLING, &[0; 100]);
            let mut c2 = AttrControl::default();
            let result = c2.get_from(&m3);
            if let Err(err) = result {
                assert!(is_attr_size_invalid(&err), "should error");
            } else {
                panic!("expected error, but got ok");
            }
        }
    }

    Ok(())
}