vantage-sql 0.10.2

//! Test 2d: AssociatedExpression — expressions with a known return type.
//!
//! Call .get() to execute and get a typed result.

use vantage_expressions::ExprDataSource;
#[allow(unused_imports)]
use vantage_sql::postgres::PostgresType;
use vantage_sql::postgres::{AnyPostgresType, PostgresDB};
use vantage_sql::postgres_expr;
use vantage_types::{Record, TryFromRecord, entity};

const PG_URL: &str = "postgres://vantage:vantage@localhost:5433/vantage";

async fn setup(table: &str) -> PostgresDB {
    let db = PostgresDB::connect(PG_URL).await.unwrap();

    sqlx::query(&format!("DROP TABLE IF EXISTS \"{}\"", table))
        .execute(db.pool())
        .await
        .unwrap();

    sqlx::query(&format!(
        "CREATE TABLE \"{}\" (
            id TEXT PRIMARY KEY,
            name TEXT NOT NULL,
            price BIGINT NOT NULL
        )",
        table
    ))
    .execute(db.pool())
    .await
    .unwrap();

    sqlx::query(&format!(
        "INSERT INTO \"{}\" VALUES ('a', 'Cheap', 50), ('b', 'Mid', 150), ('c', 'Expensive', 300)",
        table
    ))
    .execute(db.pool())
    .await
    .unwrap();

    db
}

#[entity(PostgresType)]
struct Product {
    id: String,
    name: String,
    price: i64,
}

#[tokio::test]
async fn test_associated_scalar() {
    let db = setup("assoc_scalar").await;

    let associated = db.associate::<i64>(postgres_expr!("SELECT COUNT(*) FROM \"assoc_scalar\""));
    assert_eq!(associated.get().await.unwrap(), 3);
}

#[tokio::test]
async fn test_associated_entity() {
    let db = setup("assoc_entity").await;

    let associated = db.associate::<Record<AnyPostgresType>>(postgres_expr!(
        "SELECT id, name, price FROM \"assoc_entity\" WHERE id = {}",
        "c"
    ));
    let record = associated.get().await.unwrap();
    let product = Product::from_record(record).unwrap();
    assert_eq!(product.id, "c");
    assert_eq!(product.name, "Expensive");
    assert_eq!(product.price, 300);
}