rust/crates/salsa/tests/transparent.rs

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2024-02-07 09:29:46 -06:00
//! Test that transparent (uncached) queries work
#[salsa::query_group(QueryGroupStorage)]
trait QueryGroup {
#[salsa::input]
fn input(&self, x: u32) -> u32;
#[salsa::transparent]
fn wrap(&self, x: u32) -> u32;
fn get(&self, x: u32) -> u32;
}
fn wrap(db: &dyn QueryGroup, x: u32) -> u32 {
db.input(x)
}
fn get(db: &dyn QueryGroup, x: u32) -> u32 {
db.wrap(x)
}
#[salsa::database(QueryGroupStorage)]
#[derive(Default)]
struct Database {
storage: salsa::Storage<Self>,
}
impl salsa::Database for Database {}
#[test]
fn transparent_queries_work() {
let mut db = Database::default();
db.set_input(1, 10);
assert_eq!(db.get(1), 10);
assert_eq!(db.get(1), 10);
db.set_input(1, 92);
assert_eq!(db.get(1), 92);
assert_eq!(db.get(1), 92);
}