Company roundtrip just works

tests/wit_components/resources/guest.rs

@@ -10,6 +10,10 @@ impl Guest for MyEmployees {
         let company = component_test::wit_protocol::companies::Company::new(&name, 80_000);
         company.get_name().to_owned()
     }
+
+    fn company_roundtrip(company: Company) -> Company {
+        company
+    }
 }
 
 export!(MyEmployees);

tests/wit_components/resources/host.rs

@@ -88,6 +88,20 @@ pub fn run_test(component_bytes: &[u8]) -> Result<()> {
         .unwrap();
     assert_eq!(result, "Company Name");
 
+    let company = Resource::new_own(store.data_mut().companies.new(MyCompany {
+        name: "Company Roundtrip".into(),
+        max_salary: 30_000,
+    }));
+
+    let result = instance
+        .call_company_roundtrip(&mut store, company)
+        .unwrap();
+    assert_eq!(
+        store.data().companies.get(result.rep()).unwrap().name,
+        "Company Roundtrip"
+    );
+    store.data_mut().companies.drop(result.rep()).unwrap();
+
     assert_eq!(
         store.data().companies.resources.len(),
         0,

tests/wit_components/resources/protocol.wit

@@ -11,6 +11,9 @@ interface companies {
 
 world resources {
   import companies;
+  use companies.{company};
 
   export create-company: func(name: string) -> string;
+
+  export company-roundtrip: func(company: company) -> company;
 }