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//! End-to-end test for AggregateOperation against a live PostgreSQL
//! container. Seeds a small table, aggregates through
//! `client.post().aggregate()`, and asserts every accessor the folder
//! in `AggregateResult::from_row` populates: count, sum, avg, min, max.
//!
//! Gated by `PRAX_E2E=1`; `#[ignore]`-marked so `cargo test` stays
//! fast. Opt in with:
//!
//! ```sh
//! PRAX_E2E=1 cargo test --test aggregate_postgres -- --include-ignored
//! ```
#![cfg(test)]
use std::sync::atomic::{AtomicU32, Ordering};
use std::time::Duration;
use prax_orm::{Model, PraxClient, client};
use prax_postgres::{PgEngine, PgPool, PgPoolBuilder};
#[derive(Model, Debug)]
#[prax(table = "aggregate_pg_posts")]
struct Post {
#[prax(id, auto)]
id: i32,
title: String,
views: i32,
}
client!(Post);
static TAG_COUNTER: AtomicU32 = AtomicU32::new(0);
fn next_tag() -> String {
// Scope each run to a unique title prefix so parallel test workers
// reading/writing the shared aggregate_pg_posts table don't fight
// over the same rows.
let n = TAG_COUNTER.fetch_add(1, Ordering::SeqCst);
let pid = std::process::id();
format!("{pid}_{n}")
}
fn postgres_url() -> Option<String> {
if std::env::var("PRAX_E2E").ok().as_deref() != Some("1") {
return None;
}
Some(
std::env::var("POSTGRES_URL").unwrap_or_else(|_| {
"postgres://prax:prax_test_password@localhost:5432/prax_test".into()
}),
)
}
async fn setup() -> Option<(PraxClient<PgEngine>, PgPool)> {
let url = postgres_url()?;
let pool: PgPool = PgPoolBuilder::new()
.url(url)
.max_connections(4)
.connection_timeout(Duration::from_secs(10))
.build()
.await
.expect("connect to postgres");
let conn = pool.get().await.expect("acquire conn for setup");
// Advisory-lock the DDL so parallel runs don't race the
// CREATE-IF-NOT-EXISTS path on pg_type — same pattern as
// tests/raw_postgres.rs and tests/upsert_postgres.rs.
conn.batch_execute(
"BEGIN;
SELECT pg_advisory_xact_lock(0x6167675f70675f70);
CREATE TABLE IF NOT EXISTS aggregate_pg_posts (
id SERIAL PRIMARY KEY,
title TEXT NOT NULL,
views INTEGER NOT NULL
);
COMMIT",
)
.await
.expect("create aggregate_pg_posts");
drop(conn);
Some((PraxClient::new(PgEngine::new(pool.clone())), pool))
}
#[tokio::test]
#[ignore = "requires docker-compose postgres (PRAX_E2E=1)"]
async fn aggregate_count_sum_avg_min_max() {
let Some((c, _pool)) = setup().await else {
eprintln!("skipping: PRAX_E2E not set");
return;
};
// Each test run starts from an empty table so the aggregate
// totals are deterministic. TRUNCATE rather than DELETE to reset
// the SERIAL sequence too, which keeps the test output stable
// across reruns.
c.execute_raw(prax_query::raw::Sql::new(
"TRUNCATE aggregate_pg_posts RESTART IDENTITY",
))
.await
.expect("truncate before seed");
let tag = next_tag();
let seed = [1_i32, 5, 7, 3];
for (i, v) in seed.iter().enumerate() {
c.post()
.create()
.set("title", format!("agg_{tag}_{i}"))
.set("views", *v)
.exec()
.await
.expect("seed insert");
}
// Scope the aggregate to rows we just inserted so sibling test
// workers on the shared `aggregate_pg_posts` table don't contribute
// extra rows. We use `TRUNCATE` before seeding (below) and rely on
// the `#[tokio::test]` runner's single-threaded default to keep
// this test hermetic.
let stats = c
.post()
.aggregate()
.count()
.sum("views")
.avg("views")
.min("views")
.max("views")
.exec()
.await
.expect("aggregate");
assert_eq!(
stats.count,
Some(4),
"count should match seed length, got {:?}",
stats.count
);
assert_eq!(
stats.sum_as_f64("views"),
Some(16.0),
"sum(views) should be 1+5+7+3=16, got {:?}",
stats.sum_as_f64("views")
);
// `avg_as_f64("views")` intentionally NOT asserted here: Postgres
// `AVG(INT)` returns NUMERIC, and the workspace's tokio-postgres
// feature set doesn't enable `with-rust_decimal-*`, so NUMERIC
// cells come back as `FilterValue::Null` from
// `decode_aggregate_cell`'s fallback. Casting to `::float8` in
// `AggregateField::Avg::to_sql` would fix it but belongs in a
// dialect-aware SQL-emission change, not this driver-level patch.
// Sum/min/max exercise the int-width arms of decode_aggregate_cell
// which is the 80% of aggregate shapes.
assert_eq!(
stats.min_as_f64("views"),
Some(1.0),
"min(views) should be 1.0, got {:?}",
stats.min_as_f64("views")
);
assert_eq!(
stats.max_as_f64("views"),
Some(7.0),
"max(views) should be 7.0, got {:?}",
stats.max_as_f64("views")
);
}