Add a test

salsa-2022-tests/tests/debug.rs

@@ -0,0 +1,57 @@
+//! Test that a `tracked` fn on a `salsa::input`
+//! compiles and executes successfully.
+
+use expect_test::expect;
+use test_log::test;
+use salsa::DebugWithDb;
+
+#[salsa::jar(db = Db)]
+struct Jar(MyInput, ComplexStruct);
+
+trait Db: salsa::DbWithJar<Jar> {}
+
+#[salsa::input]
+struct MyInput {
+    field: u32,
+}
+
+#[derive(Debug, Eq, PartialEq, Clone)]
+struct NotSalsa {
+    field: String,
+}
+
+#[salsa::input]
+struct ComplexStruct {
+    my_input: MyInput,
+    not_salsa: NotSalsa,
+}
+
+#[salsa::db(Jar)]
+#[derive(Default)]
+struct Database {
+    storage: salsa::Storage<Self>,
+}
+
+impl salsa::Database for Database {
+    fn salsa_runtime(&self) -> &salsa::Runtime {
+        self.storage.runtime()
+    }
+}
+
+impl Db for Database {}
+
+
+#[test]
+fn execute() {
+    let mut db = Database::default();
+
+    let input = MyInput::new(&mut db, 22);
+    let not_salsa = NotSalsa {
+        field: "it's salsa time".to_string(),
+    };
+    let complex_struct = ComplexStruct::new(&mut db, input, not_salsa);
+
+    let actual = format!("{:?}", complex_struct.debug(&db));
+    let expected = expect![[r#"ComplexStruct { [salsa id]: 0, my_input: MyInput { [salsa id]: 0, field: 22 }, not_salsa: NotSalsa { field: "it's salsa time" } }"#]];
+    expected.assert_eq(&actual);
+}