core: Bring clone tests up to date in style

src/libcore/clone.rs

@@ -126,38 +126,40 @@ extern_fn_clone!(A, B, C, D, E, F)
 extern_fn_clone!(A, B, C, D, E, F, G)
 extern_fn_clone!(A, B, C, D, E, F, G, H)
 
-#[test]
+#[cfg(test)]
-fn test_owned_clone() {
+mod test {
+    #[test]
+    fn test_owned_clone() {
         let a = box 5i;
         let b: Box<int> = a.clone();
         assert_eq!(a, b);
-}
+    }
 
-#[test]
+    #[test]
-fn test_managed_clone() {
+    fn test_managed_clone() {
         let a = @5i;
         let b: @int = a.clone();
         assert_eq!(a, b);
-}
+    }
 
-#[test]
+    #[test]
-fn test_borrowed_clone() {
+    fn test_borrowed_clone() {
         let x = 5i;
         let y: &int = &x;
         let z: &int = (&y).clone();
         assert_eq!(*z, 5);
-}
+    }
 
-#[test]
+    #[test]
-fn test_clone_from() {
+    fn test_clone_from() {
-    let a = box 5;
+        let a = ~5;
-    let mut b = box 10;
+        let mut b = ~10;
         b.clone_from(&a);
         assert_eq!(*b, 5);
-}
+    }
 
-#[test]
+    #[test]
-fn test_extern_fn_clone() {
+    fn test_extern_fn_clone() {
         trait Empty {}
         impl Empty for int {}
 
@@ -168,4 +170,5 @@ fn test_extern_fn_clone() {
         let _ = test_fn_a.clone();
         let _ = test_fn_b::<int>.clone();
         let _ = test_fn_c.clone();
+    }
 }