4 files changed, 21 insertions, 41 deletions
diff --git a/exercises/move_semantics/move_semantics1.rs b/exercises/move_semantics/move_semantics1.rs
index 710d20d..e063937 100644
--- a/exercises/move_semantics/move_semantics1.rs
+++ b/exercises/move_semantics/move_semantics1.rs
@@ -5,24 +5,19 @@
 
 // I AM NOT DONE
 
+#[test]
 fn main() {
-    let vec0 = Vec::new();
+    let vec0 = vec![22, 44, 66];
 
     let vec1 = fill_vec(vec0);
 
-    println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
-
-    vec1.push(88);
-
-    println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
+    assert_eq!(vec1, vec![22, 44, 66, 88]);
 }
 
 fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
-    let mut vec = vec;
+    let vec = vec;
 
-    vec.push(22);
-    vec.push(44);
-    vec.push(66);
+    vec.push(88);
 
     vec
 }
diff --git a/exercises/move_semantics/move_semantics2.rs b/exercises/move_semantics/move_semantics2.rs
index 72d37fa..baf6bcc 100644
--- a/exercises/move_semantics/move_semantics2.rs
+++ b/exercises/move_semantics/move_semantics2.rs
@@ -1,32 +1,26 @@
 // move_semantics2.rs
 //
-// Expected output:
-// vec0 has length 3, with contents `[22, 44, 66]`
-// vec1 has length 4, with contents `[22, 44, 66, 88]`
+// Make the test pass by finding a way to keep both Vecs separate!
 //
 // Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand
 // for a hint.
 
 // I AM NOT DONE
 
+#[test]
 fn main() {
-    let vec0 = Vec::new();
+    let vec0 = vec![22, 44, 66];
 
     let mut vec1 = fill_vec(vec0);
 
-    println!("{} has length {}, with contents: `{:?}`", "vec0", vec0.len(), vec0);
-
-    vec1.push(88);
-
-    println!("{} has length {}, with contents `{:?}`", "vec1", vec1.len(), vec1);
+    assert_eq!(vec0, vec![22, 44, 66]);
+    assert_eq!(vec1, vec![22, 44, 66, 88]);
 }
 
 fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
     let mut vec = vec;
 
-    vec.push(22);
-    vec.push(44);
-    vec.push(66);
+    vec.push(88);
 
     vec
 }
diff --git a/exercises/move_semantics/move_semantics3.rs b/exercises/move_semantics/move_semantics3.rs
index ea21493..69e564a 100644
--- a/exercises/move_semantics/move_semantics3.rs
+++ b/exercises/move_semantics/move_semantics3.rs
@@ -8,22 +8,17 @@
 
 // I AM NOT DONE
 
+#[test]
 fn main() {
-    let vec0 = Vec::new();
+    let vec0 = vec![22, 44, 66];
 
     let mut vec1 = fill_vec(vec0);
 
-    println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
-
-    vec1.push(88);
-
-    println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
+    assert_eq!(vec1, vec![22, 44, 66, 88]);
 }
 
 fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
-    vec.push(22);
-    vec.push(44);
-    vec.push(66);
+    vec.push(88);
 
     vec
 }
diff --git a/exercises/move_semantics/move_semantics4.rs b/exercises/move_semantics/move_semantics4.rs
index 75a3b6b..80b49db 100644
--- a/exercises/move_semantics/move_semantics4.rs
+++ b/exercises/move_semantics/move_semantics4.rs
@@ -9,25 +9,21 @@
 
 // I AM NOT DONE
 
+#[test]
 fn main() {
-    let vec0 = Vec::new();
+    let vec0 = vec![22, 44, 66];
 
     let mut vec1 = fill_vec(vec0);
 
-    println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
-
-    vec1.push(88);
-
-    println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
+    assert_eq!(vec1, vec![22, 44, 66, 88]);
 }
 
-// `fill_vec()` no longer takes `vec: Vec<i32>` as argument
+// `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(22);
-    vec.push(44);
-    vec.push(66);
+    vec.push(88);
 
     vec
 }