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: native.rs
    path of file: ./repos/juice/coaster-blas/src/frameworks
    
    the code of the file until where you have to start completion: //! Provides BLAS for a Native backend.

use crate::plugin::*;
use crate::transpose::*;
use coaster::backend::Backend;
use coaster::frameworks::native::Native;
use coaster::tensor::{ITensorDesc, SharedTensor};
use rblas;
use rblas::math::bandmat::BandMat;
use rblas::math::mat::Mat;
use rblas::m
    
    fn it_converts_correctly_to_and_from_matrix() {
        let backend = get_native_backend();
        let mut a = SharedTensor::<f32>::new(&vec![3, 2]);
        write_to_memory(
            a.write_only(backend.device()).unwrap(),
            &[2f32, 5f32, 2f32, 5f32, 2f32, 5f32],
        );

        {
            let a_slice_in = a.read(backend.device()).unwrap().as_slice::<f32>();
            let a_mat = as_matrix(a_slice_in, &[3, 2]);
            // right
            assert_eq!(a_mat[0][0], 2f32);
            assert_eq!(a_mat[0][1], 5f32);
            assert_eq!(a_mat[1][0], 2f32);
            assert_eq!(a_mat[1][1], 5f32);
            assert_eq!(a_mat[2][0], 2f32);
            assert_eq!(a_mat[2][1], 5f32);
        }
    }