From a71bc62c29cebec115700d98a61d618e0c7a83b9 Mon Sep 17 00:00:00 2001
From: Yvan Sraka <yvan@sraka.pw>
Date: Mon, 22 Apr 2019 00:09:30 +0200
Subject: [PATCH] Add errors to exercises that compile without user changes

---
 exercises/move_semantics/move_semantics4.rs | 3 ++-
 exercises/test2.rs                          | 7 ++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/exercises/move_semantics/move_semantics4.rs b/exercises/move_semantics/move_semantics4.rs
index 903a330f..d47e0093 100644
--- a/exercises/move_semantics/move_semantics4.rs
+++ b/exercises/move_semantics/move_semantics4.rs
@@ -16,7 +16,8 @@ fn main() {
 
 }
 
-fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
+// `fill_vec()` no longer take `vec: Vec<i32>` as argument
+fn fill_vec() -> Vec<i32> {
     let mut vec = vec;
 
     vec.push(22);
diff --git a/exercises/test2.rs b/exercises/test2.rs
index 249abbc1..75a47391 100644
--- a/exercises/test2.rs
+++ b/exercises/test2.rs
@@ -17,6 +17,11 @@ mod tests {
 
     #[test]
     fn returns_twice_of_positive_numbers() {
-        assert_eq!(4, 4);
+        assert_eq!(times_two(4), ???);
+    }
+
+    #[test]
+    fn returns_twice_of_negative_numbers() {
+        // TODO write an assert for `times_two(-4)`
     }
 }