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: release.rs
    path of file: ./repos/MarkFlowy/cli/tests
    
    the code of the file until where you have to start completion: extern crate mfdev;

#[test]
fn get_new_verion_major() {
    let old_ve
    
fn get_new_verion_major() {
    let old_version = "1.2.3".to_string();
    let major = true;
    let minor = false;
    let patch = false;
    let new_version = mfdev::utils::get_new_verion(old_version, major, minor, patch);
    assert_eq!(new_version, "2.0.0".to_string());
}