1 files changed, 14 insertions, 25 deletions
diff --git a/exercises/06_move_semantics/move_semantics4.rs b/exercises/06_move_semantics/move_semantics4.rs
index 80b49db..83a0344 100644
--- a/exercises/06_move_semantics/move_semantics4.rs
+++ b/exercises/06_move_semantics/move_semantics4.rs
@@ -1,29 +1,18 @@
-// move_semantics4.rs
-//
-// Refactor this code so that instead of passing `vec0` into the `fill_vec`
-// function, the Vector gets created in the function itself and passed back to
-// the main function.
-//
-// Execute `rustlings hint move_semantics4` or use the `hint` watch subcommand
-// for a hint.
-
-// I AM NOT DONE
-
-#[test]
 fn main() {
-    let vec0 = vec![22, 44, 66];
-
-    let mut vec1 = fill_vec(vec0);
-
-    assert_eq!(vec1, vec![22, 44, 66, 88]);
+    // You can optionally experiment here.
 }
 
-// `fill_vec()` no longer takes `vec: Vec<i32>` as argument - don't change this!
-fn fill_vec() -> Vec<i32> {
-    // Instead, let's create and fill the Vec in here - how do you do that?
-    let mut vec = vec;
-
-    vec.push(88);
-
-    vec
+#[cfg(test)]
+mod tests {
+    // TODO: Fix the compiler errors only by reordering the lines in the test.
+    // Don't add, change or remove any line.
+    #[test]
+    fn move_semantics4() {
+        let mut x = 100;
+        let y = &mut x;
+        let z = &mut x;
+        *y += 100;
+        *z += 1000;
+        assert_eq!(x, 1200);
+    }
 }