bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/salsa/tests/transparent.rs')
-rw-r--r--crates/salsa/tests/transparent.rs39
1 files changed, 39 insertions, 0 deletions
diff --git a/crates/salsa/tests/transparent.rs b/crates/salsa/tests/transparent.rs
new file mode 100644
index 0000000000..2e6dd4267b
--- /dev/null
+++ b/crates/salsa/tests/transparent.rs
@@ -0,0 +1,39 @@
+//! 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);
+}