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

Convert exercises with assertions to tests

exercises/iterators/iterators1.rs

@@ -11,6 +11,7 @@
 
 // I AM NOT DONE
 
+#[test]
 fn main() {
     let my_fav_fruits = vec!["banana", "custard apple", "avocado", "peach", "raspberry"];
 

exercises/move_semantics/move_semantics3.rs

@@ -1,6 +1,6 @@
 // move_semantics3.rs
 //
-// Make me compile without adding new lines-- just changing existing lines! (no
+// Make me compile without adding new lines -- just changing existing lines! (no
 // lines with multiple semicolons necessary!)
 //
 // Execute `rustlings hint move_semantics3` or use the `hint` watch subcommand

exercises/move_semantics/move_semantics5.rs

@@ -8,6 +8,7 @@
 
 // I AM NOT DONE
 
+#[test]
 fn main() {
     let mut x = 100;
     let y = &mut x;

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

exercises/threads/threads3.rs

@@ -48,6 +48,7 @@ fn send_tx(q: Queue, tx: mpsc::Sender<u32>) -> () {
     });
 }
 
+#[test]
 fn main() {
     let (tx, rx) = mpsc::channel();
     let queue = Queue::new();