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use expect_test::expect;
mod logger_db;
use logger_db::LoggerDb;
use query_group_macro::query_group;
#[query_group]
pub trait LruDB: salsa::Database {
// // input with no params
#[salsa::input]
fn input_string(&self) -> String;
#[salsa::lru(16)]
#[salsa::invoke_interned(length_query)]
fn length_query(&self, key: ()) -> usize;
#[salsa::lru(16)]
#[salsa::invoke_interned(invoked_query)]
fn length_query_invoke(&self, key: ()) -> usize;
}
fn length_query(db: &dyn LruDB, _key: ()) -> usize {
db.input_string().len()
}
fn invoked_query(db: &dyn LruDB, _key: ()) -> usize {
db.input_string().len()
}
#[test]
fn plain_lru() {
let mut db = LoggerDb::default();
db.set_input_string(String::from("Hello, world!"));
let len = db.length_query(());
assert_eq!(len, 13);
db.assert_logs(expect![[r#"
[
"salsa_event(WillCheckCancellation)",
"salsa_event(WillExecute { database_key: create_data_LruDB(Id(0)) })",
"salsa_event(WillCheckCancellation)",
"salsa_event(DidValidateMemoizedValue { database_key: create_data_LruDB(Id(0)) })",
"salsa_event(WillCheckCancellation)",
"salsa_event(WillExecute { database_key: length_query_shim(Id(800)) })",
"salsa_event(WillCheckCancellation)",
]"#]]);
}
#[test]
fn invoke_lru() {
let mut db = LoggerDb::default();
db.set_input_string(String::from("Hello, world!"));
let len = db.length_query_invoke(());
assert_eq!(len, 13);
db.assert_logs(expect![[r#"
[
"salsa_event(WillCheckCancellation)",
"salsa_event(WillExecute { database_key: create_data_LruDB(Id(0)) })",
"salsa_event(WillCheckCancellation)",
"salsa_event(DidValidateMemoizedValue { database_key: create_data_LruDB(Id(0)) })",
"salsa_event(WillCheckCancellation)",
"salsa_event(WillExecute { database_key: length_query_invoke_shim(Id(800)) })",
"salsa_event(WillCheckCancellation)",
]"#]]);
}
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