sqlx/tests/postgres/postgres.rs at develop · lineCode/sqlx

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use futures::TryStreamExt;

use sqlx::postgres::PgRow;

use sqlx::{postgres::Postgres, Executor, Row};

use sqlx_test::new;

#[sqlx_rt::test]

async fn it_connects() -> anyhow::Result<()> {

let mut conn = new::<Postgres>().await?;

let value = sqlx::query("select 1 + 1")

.try_map(|row: PgRow| row.try_get::<i32, _>(0))

.fetch_one(&mut conn)

.await?;

assert_eq!(2i32, value);

Ok(())

}

#[sqlx_rt::test]

async fn it_maths() -> anyhow::Result<()> {

let mut conn = new::<Postgres>().await?;

let value = sqlx::query("select 1 + $1::int")

.bind(5_i32)

.try_map(|row: PgRow| row.try_get::<i32, _>(0))

.fetch_one(&mut conn)

.await?;

assert_eq!(6i32, value);

Ok(())

}

#[sqlx_rt::test]

async fn it_executes() -> anyhow::Result<()> {

let mut conn = new::<Postgres>().await?;

let _ = conn

.execute(

r#"

CREATE TEMPORARY TABLE users (id INTEGER PRIMARY KEY);

"#,

)

.await?;

for index in 1..=10_i32 {

let cnt = sqlx::query("INSERT INTO users (id) VALUES ($1)")

.bind(index)

.execute(&mut conn)

.await?;

assert_eq!(cnt, 1);

}

let sum: i32 = sqlx::query("SELECT id FROM users")

.try_map(|row: PgRow| row.try_get::<i32, _>(0))

.fetch(&mut conn)

.try_fold(0_i32, |acc, x| async move { Ok(acc + x) })

.await?;

assert_eq!(sum, 55);

Ok(())

}

// https://github.com/launchbadge/sqlx/issues/104

#[sqlx_rt::test]

async fn it_can_return_interleaved_nulls_issue_104() -> anyhow::Result<()> {

let mut conn = new::<Postgres>().await?;

let tuple = sqlx::query("SELECT NULL, 10::INT, NULL, 20::INT, NULL, 40::INT, NULL, 80::INT")

.try_map(|row: PgRow| {

Ok((

row.get::<Option<i32>, _>(0),

row.get::<Option<i32>, _>(1),

row.get::<Option<i32>, _>(2),

row.get::<Option<i32>, _>(3),

row.get::<Option<i32>, _>(4),

row.get::<Option<i32>, _>(5),

row.get::<Option<i32>, _>(6),

row.get::<Option<i32>, _>(7),

))

})

.fetch_one(&mut conn)

.await?;

assert_eq!(tuple.0, None);

assert_eq!(tuple.1, Some(10));

assert_eq!(tuple.2, None);

assert_eq!(tuple.3, Some(20));

assert_eq!(tuple.4, None);

assert_eq!(tuple.5, Some(40));

assert_eq!(tuple.6, None);

assert_eq!(tuple.7, Some(80));

Ok(())

}

#[sqlx_rt::test]

async fn it_can_query_scalar() -> anyhow::Result<()> {

let mut conn = new::<Postgres>().await?;

let scalar: i32 = sqlx::query_scalar("SELECT 42").fetch_one(&mut conn).await?;

assert_eq!(scalar, 42);

let scalar: Option<i32> = sqlx::query_scalar("SELECT 42").fetch_one(&mut conn).await?;

assert_eq!(scalar, Some(42));

let scalar: Option<i32> = sqlx::query_scalar("SELECT NULL")

.fetch_one(&mut conn)

.await?;

assert_eq!(scalar, None);

let scalar: Option<i64> = sqlx::query_scalar("SELECT 42::bigint")

.fetch_optional(&mut conn)

.await?;

assert_eq!(scalar, Some(42));

let scalar: Option<i16> = sqlx::query_scalar("").fetch_optional(&mut conn).await?;

assert_eq!(scalar, None);

Ok(())

}

#[sqlx_rt::test]

/// This is seperate from `it_can_query_scalar` because while implementing it I ran into a

/// bug which that prevented `Vec<i32>` from compiling but allowed Vec<Option<i32>>.

async fn it_can_query_all_scalar() -> anyhow::Result<()> {

let mut conn = new::<Postgres>().await?;

let scalar: Vec<i32> = sqlx::query_scalar("SELECT $1")

.bind(42)

.fetch_all(&mut conn)

.await?;

assert_eq!(scalar, vec![42]);

let scalar: Vec<Option<i32>> = sqlx::query_scalar("SELECT $1 UNION ALL SELECT NULL")

.bind(42)

.fetch_all(&mut conn)

.await?;

assert_eq!(scalar, vec![Some(42), None]);

Ok(())

}

// #[cfg_attr(feature = "runtime-async-std", async_std::test)]

// #[cfg_attr(feature = "runtime-tokio", tokio::test)]

// async fn it_can_work_with_transactions() -> anyhow::Result<()> {

// let mut conn = new::<Postgres>().await?;

// conn.execute("CREATE TABLE IF NOT EXISTS _sqlx_users_1922 (id INTEGER PRIMARY KEY)")

// .await?;

// conn.execute("TRUNCATE _sqlx_users_1922").await?;

// // begin .. rollback

// let mut tx = conn.begin().await?;

// sqlx::query("INSERT INTO _sqlx_users_1922 (id) VALUES ($1)")

// .bind(10_i32)

// .execute(&mut tx)

// .await?;

// conn = tx.rollback().await?;

// let (count,): (i64,) = sqlx::query_as("SELECT COUNT(*) FROM _sqlx_users_1922")

// .fetch_one(&mut conn)

// .await?;

// assert_eq!(count, 0);

// // begin .. commit

// let mut tx = conn.begin().await?;

// sqlx::query("INSERT INTO _sqlx_users_1922 (id) VALUES ($1)")

// .bind(10_i32)

// .execute(&mut tx)

// .await?;

// conn = tx.commit().await?;

// let (count,): (i64,) = sqlx::query_as("SELECT COUNT(*) FROM _sqlx_users_1922")

// .fetch_one(&mut conn)

// .await?;

// assert_eq!(count, 1);

// // begin .. (drop)

// {

// let mut tx = conn.begin().await?;

// sqlx::query("INSERT INTO _sqlx_users_1922 (id) VALUES ($1)")

// .bind(20_i32)

// .execute(&mut tx)

// .await?;

// }

// conn = new::<Postgres>().await?;

// let (count,): (i64,) = sqlx::query_as("SELECT COUNT(*) FROM _sqlx_users_1922")

// .fetch_one(&mut conn)

// .await?;

// assert_eq!(count, 1);

// Ok(())

// }

// #[cfg_attr(feature = "runtime-async-std", async_std::test)]

// #[cfg_attr(feature = "runtime-tokio", tokio::test)]

// async fn it_can_work_with_nested_transactions() -> anyhow::Result<()> {

// let mut conn = new::<Postgres>().await?;

// conn.execute("CREATE TABLE IF NOT EXISTS _sqlx_users_2523 (id INTEGER PRIMARY KEY)")

// .await?;

// conn.execute("TRUNCATE _sqlx_users_2523").await?;

// // begin

// let mut tx = conn.begin().await?;

// // insert a user

// sqlx::query("INSERT INTO _sqlx_users_2523 (id) VALUES ($1)")

// .bind(50_i32)

// .execute(&mut tx)

// .await?;

// // begin once more

// let mut tx = tx.begin().await?;

// // insert another user

// sqlx::query("INSERT INTO _sqlx_users_2523 (id) VALUES ($1)")

// .bind(10_i32)

// .execute(&mut tx)

// .await?;

// // never mind, rollback

// let mut tx = tx.rollback().await?;

// // did we really?

// let (count,): (i64,) = sqlx::query_as("SELECT COUNT(*) FROM _sqlx_users_2523")

// .fetch_one(&mut tx)

// .await?;

// assert_eq!(count, 1);

// // actually, commit

// let mut conn = tx.commit().await?;

// // did we really?

// let (count,): (i64,) = sqlx::query_as("SELECT COUNT(*) FROM _sqlx_users_2523")

// .fetch_one(&mut conn)

// .await?;

// assert_eq!(count, 1);

// Ok(())

// }

// #[cfg_attr(feature = "runtime-async-std", async_std::test)]

// #[cfg_attr(feature = "runtime-tokio", tokio::test)]

// async fn it_can_rollback_nested_transactions() -> anyhow::Result<()> {

// let mut conn = new::<Postgres>().await?;

// conn.execute("CREATE TABLE IF NOT EXISTS _sqlx_users_512412 (id INTEGER PRIMARY KEY)")

// .await?;

// conn.execute("TRUNCATE _sqlx_users_512412").await?;

// // begin

// let mut tx = conn.begin().await?;

// // insert a user

// sqlx::query("INSERT INTO _sqlx_users_512412 (id) VALUES ($1)")

// .bind(50_i32)

// .execute(&mut tx)

// .await?;

// // begin once more

// let mut tx = tx.begin().await?;

// // insert another user

// sqlx::query("INSERT INTO _sqlx_users_512412 (id) VALUES ($1)")

// .bind(10_i32)

// .execute(&mut tx)

// .await?;

// // stop the phone, drop the entire transaction

// tx.close().await?;

// // did we really?

// let mut conn = new::<Postgres>().await?;

// let (count,): (i64,) = sqlx::query_as("SELECT COUNT(*) FROM _sqlx_users_512412")

// .fetch_one(&mut conn)

// .await?;

// assert_eq!(count, 0);

// Ok(())

// }

// // run with `cargo test --features postgres -- --ignored --nocapture pool_smoke_test`

// #[ignore]

// #[cfg_attr(feature = "runtime-async-std", async_std::test)]

// #[cfg_attr(feature = "runtime-tokio", tokio::test)]

// async fn pool_smoke_test() -> anyhow::Result<()> {

// #[cfg(feature = "runtime-tokio")]

// use tokio::{task::spawn, time::delay_for as sleep, time::timeout};

// #[cfg(feature = "runtime-async-std")]

// use async_std::{future::timeout, task::sleep, task::spawn};

// eprintln!("starting pool");

// let pool = PgPool::builder()

// .connect_timeout(Duration::from_secs(5))

// .min_size(5)

// .max_size(10)

// .build(&dotenv::var("DATABASE_URL")?)

// .await?;

// // spin up more tasks than connections available, and ensure we don't deadlock

// for i in 0..20 {

// let pool = pool.clone();

// spawn(async move {

// loop {

// if let Err(e) = sqlx::query("select 1 + 1").execute(&pool).await {

// eprintln!("pool task {} dying due to {}", i, e);

// break;

// }

// });

// }

// for _ in 0..5 {

// let pool = pool.clone();

// spawn(async move {

// while !pool.is_closed() {

// // drop acquire() futures in a hot loop

// // https://github.com/launchbadge/sqlx/issues/83

// drop(pool.acquire());

// }

// });

// }

// eprintln!("sleeping for 30 seconds");

// sleep(Duration::from_secs(30)).await;

// assert_eq!(pool.size(), 10);

// eprintln!("closing pool");

// timeout(Duration::from_secs(30), pool.close()).await?;

// eprintln!("pool closed successfully");

// Ok(())

// }

#[sqlx_rt::test]

async fn test_invalid_query() -> anyhow::Result<()> {

let mut conn = new::<Postgres>().await?;

conn.execute("definitely not a correct query")

.await

.unwrap_err();

let mut s = conn.fetch("select 1");

let row = s.try_next().await?.unwrap();

assert_eq!(row.get::<i32, _>(0), 1i32);

Ok(())

}

/// Tests the edge case of executing a completely empty query string.

///

/// This gets flagged as an `EmptyQueryResponse` in Postgres. We

/// catch this and just return no rows.

#[sqlx_rt::test]

async fn test_empty_query() -> anyhow::Result<()> {

let mut conn = new::<Postgres>().await?;

let affected = conn.execute("").await?;

assert_eq!(affected, 0);

Ok(())

}

/// Test a simple select expression. This should return the row.

#[sqlx_rt::test]

async fn test_select_expression() -> anyhow::Result<()> {

let mut conn = new::<Postgres>().await?;

let mut s = conn.fetch("SELECT 5");

let row = s.try_next().await?.unwrap();

assert!(5i32 == row.try_get::<i32, _>(0)?);

Ok(())

}

/// Test that we can interleave reads and writes to the database

/// in one simple query. Using the `Cursor` API we should be

/// able to fetch from both queries in sequence.

#[sqlx_rt::test]

async fn test_multi_read_write() -> anyhow::Result<()> {

let mut conn = new::<Postgres>().await?;

let mut s = conn.fetch(

CREATE TABLE IF NOT EXISTS _sqlx_test_postgres_5112 (

id BIGSERIAL PRIMARY KEY,

text TEXT NOT NULL

);

SELECT 'Hello World' as _1;

INSERT INTO _sqlx_test_postgres_5112 (text) VALUES ('this is a test');

SELECT id, text FROM _sqlx_test_postgres_5112;

);

let row = s.try_next().await?.unwrap();

assert!("Hello World" == row.try_get::<&str, _>("_1")?);

let row = s.try_next().await?.unwrap();

let id: i64 = row.try_get("id")?;

let text: &str = row.try_get("text")?;

assert_eq!(1_i64, id);

assert_eq!("this is a test", text);

Ok(())

}

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