Merging upstream version 1.75.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 19 insertions, 0 deletions

diff --git a/vendor/itertools/tests/peeking_take_while.rs b/vendor/itertools/tests/peeking_take_while.rs
index a1147027e..5be97271d 100644
--- a/vendor/itertools/tests/peeking_take_while.rs
+++ b/vendor/itertools/tests/peeking_take_while.rs
@@ -48,3 +48,22 @@ fn peeking_take_while_slice_iter_rev() {
     r.peeking_take_while(|_| true).count();
     assert_eq!(r.next(), None);
 }
+
+#[test]
+fn peeking_take_while_nested() {
+    let mut xs = (0..10).peekable();
+    let ys: Vec<_> = xs
+        .peeking_take_while(|x| *x < 6)
+        .peeking_take_while(|x| *x != 3)
+        .collect();
+    assert_eq!(ys, vec![0, 1, 2]);
+    assert_eq!(xs.next(), Some(3));
+
+    let mut xs = (4..10).peekable();
+    let ys: Vec<_> = xs
+        .peeking_take_while(|x| *x != 3)
+        .peeking_take_while(|x| *x < 6)
+        .collect();
+    assert_eq!(ys, vec![4, 5]);
+    assert_eq!(xs.next(), Some(6));
+}