1ba9a924d7
11180: minor: add missing test r=matklad a=matklad
This test kills the following mutant:
diff --git a/crates/mbe/src/tt_iter.rs b/crates/mbe/src/tt_iter.rs
index 9d2b1da9a..055d9a733 100644
--- a/crates/mbe/src/tt_iter.rs
+++ b/crates/mbe/src/tt_iter.rs
`@@` -134,7 +134,7 `@@` impl<'a> TtIter<'a> {
self.inner = self.inner.as_slice()[res.len()..].iter();
let res = match res.len() {
1 => Some(res[0].cloned()),
- 0 => None,
+ // 0 => None,
_ => Some(tt::TokenTree::Subtree(tt::Subtree {
delimiter: None,
token_trees: res.into_iter().map(|it| it.cloned()).collect(),
bors r+
🤖
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>