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|
//! Test that a setting a field on a `#[salsa::input]`
//! overwrites and returns the old value.
use salsa::{Database, DatabaseImpl, Update};
use test_log::test;
#[salsa::input(debug)]
struct MyInput {
field: String,
}
#[salsa::tracked(debug)]
struct MyTracked<'db> {
#[tracked]
data: MyInput,
#[tracked]
next: MyList<'db>,
}
#[derive(PartialEq, Eq, Clone, Debug, Update)]
enum MyList<'db> {
None,
Next(MyTracked<'db>),
}
#[salsa::tracked]
fn create_tracked_list(db: &dyn Database, input: MyInput) -> MyTracked<'_> {
let t0 = MyTracked::new(db, input, MyList::None);
let t1 = MyTracked::new(db, input, MyList::Next(t0));
t1
}
#[test]
fn execute() {
DatabaseImpl::new().attach(|db| {
let input = MyInput::new(db, "foo".to_string());
let t0: MyTracked = create_tracked_list(db, input);
let t1 = create_tracked_list(db, input);
expect_test::expect![[r#"
MyTracked {
[salsa id]: Id(401),
data: MyInput {
[salsa id]: Id(0),
field: "foo",
},
next: Next(
MyTracked {
[salsa id]: Id(400),
data: MyInput {
[salsa id]: Id(0),
field: "foo",
},
next: None,
},
),
}
"#]]
.assert_debug_eq(&t0);
assert_eq!(t0, t1);
})
}
|
