Merge pull request #1641 from mo8it/move-semantics5-test

Convert exercises with assertions to tests

exercises/smart_pointers/rc1.rs

@@ -35,6 +35,7 @@ impl Planet {
     }
 }
 
+#[test]
 fn main() {
     let sun = Rc::new(Sun {});
     println!("reference count = {}", Rc::strong_count(&sun)); // 1 reference