FEAT: Add ArrayVec.extend_from_slice

2018-07-17 15:07:48 +02:00
parent d11c853346
commit 2120e4bb75
2 changed files with 44 additions and 0 deletions
@@ -41,6 +41,17 @@ fn test_capacity_left() {
    assert_eq!(vec.capacity_left(), 0);
 }

+#[test]
+fn test_extend_from_slice() {
+    let mut vec: ArrayVec<[usize; 10]> = ArrayVec::new();
+
+    vec.extend_from_slice(&[1, 2, 3]);
+    assert_eq!(vec.len(), 3);
+    assert_eq!(&vec[..], &[1, 2, 3]);
+    assert_eq!(vec.pop(), Some(3));
+    assert_eq!(&vec[..], &[1, 2]);
+}
+
 #[test]
 fn test_u16_index() {
    const N: usize = 4096;