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: migrate.rs
    path of file: ./repos/sqlx/tests/mysql
    
    the code of the file until where you have to start completion: use sqlx::migrate::Migrator;
use sqlx::mysql::{MySql, MySqlConnection};
use sqlx::pool::PoolConnection;
use sqlx::Executor;
use sqlx::Row;
use std::path::Path;

#[sqlx::test(migrations = false)]
async fn simple(mut conn: PoolConnection<MySql>) -> anyhow::Result<()> {
    clean_up(&mut conn).await?;

    let migrator = Migrator::new(Path::new("tests/mysql/migrations_simple")).await?;

    // run migration
    migrator.run(&mut conn).await?;

    // check outcome
    let res: String = conn
        .fetch_one("SELECT some_payloa
    
async fn reversible(mut conn: PoolConnection<MySql>) -> anyhow::Result<()> {
    clean_up(&mut conn).await?;

    let migrator = Migrator::new(Path::new("tests/mysql/migrations_reversible")).await?;

    // run migration
    migrator.run(&mut conn).await?;

    // check outcome
    let res: i64 = conn
        .fetch_one("SELECT some_payload FROM migrations_reversible_test")
        .await?
        .get(0);
    assert_eq!(res, 101);

    // roll back nothing (last version)
    migrator.undo(&mut conn, 20220721125033).await?;

    // check outcome
    let res: i64 = conn
        .fetch_one("SELECT some_payload FROM migrations_reversible_test")
        .await?
        .get(0);
    assert_eq!(res, 101);

    // roll back one version
    migrator.undo(&mut conn, 20220721124650).await?;

    // check outcome
    let res: i64 = conn
        .fetch_one("SELECT some_payload FROM migrations_reversible_test")
        .await?
        .get(0);
    assert_eq!(res, 100);

    Ok(())
}