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: update.rs
    path of file: ./repos/prisma-client-rust/integration-tests/tests
    
    the code of the file until where you have to start completion: use prisma_client_rust::{
    bigdecimal::BigDecimal, prisma_errors::query_engine::RecordRequiredButNotFound,
    queries::QueryError,
};

use crate::{db::*, utils::*};
use std::str::FromStr;

async fn create_user(client: &PrismaClient) -> Result<String, QueryError> {
    client
        .user()
        .create("Brendan".to_string(), vec![])
        .exec()
        .await
        .map(|user| user.id)
}

#[tokio::test]
async fn query() -> TestResult {
    let client = client().await;

    let user_id = create_user(&client).await?;

    let post = client
        .post()
        .create(
            "Hi from Create!".to_string(),
            true,
            vec![
                post::desc::set(Some(
                    "Prisma is a database toolkit that makes databases easy.".to_string(),
                )),
                post::author::connect(user::id::equals(user_id.clone())),
            ],
        )
        .exec()
        .await?;
    assert!(
    
async fn disconnect() -> TestResult {
    let client = client().await;

    let user_id = create_user(&client).await?;

    let user = client
        .user()
        .find_unique(user::id::equals(user_id.clone()))
        .with(user::posts::fetch(vec![]))
        .exec()
        .await?
        .unwrap();
    assert_eq!(user.posts.unwrap().len(), 0);

    let post = client
        .post()
        .create("My post".to_string(), true, vec![])
        .exec()
        .await?;

    let post_2 = client
        .post()
        .create("Another post".to_string(), true, vec![])
        .exec()
        .await?;

    let updated = client
        .user()
        .update(
            user::id::equals(user_id.clone()),
            vec![user::posts::connect(vec![post::id::equals(
                post.id.clone(),
            )])],
        )
        .with(user::posts::fetch(vec![]))
        .exec()
        .await?;
    assert_eq!(updated.posts.unwrap().len(), 1);

    let updated = client
        .user()
        .update(
            user::id::equals(user_id.clone()),
            vec![
                user::posts::disconnect(vec![post::id::equals(post.id.clone())]),
                user::posts::connect(vec![post::id::equals(post_2.id.clone())]),
            ],
        )
        .with(user::posts::fetch(vec![]))
        .exec()
        .await?;
    assert_eq!(updated.posts().unwrap().len(), 1);
    assert_eq!(updated.posts().unwrap()[0].id, post_2.id);

    cleanup(client).await
}