Fix panics when resizing (#1408)

* Change buffer.get & buffer.get_mut to return Option, Implement Trait Index & IndexMut to panic

* Prevent FilePicker from drawing outside buffer (rust panics)

* apply suggestion

* add function in_bounds to avoid useless calculations

Co-authored-by: mathis <mathis.brossier@universite-paris-saclay.fr>

1 files changed, 1 insertions, 2 deletions

diff --git a/helix-tui/src/backend/test.rs b/helix-tui/src/backend/test.rs
index 3f56b49c..52474148 100644
--- a/helix-tui/src/backend/test.rs
+++ b/helix-tui/src/backend/test.rs
@@ -111,8 +111,7 @@ impl Backend for TestBackend {
         I: Iterator<Item = (u16, u16, &'a Cell)>,
     {
         for (x, y, c) in content {
-            let cell = self.buffer.get_mut(x, y);
-            *cell = c.clone();
+            self.buffer[(x, y)] = c.clone();
         }
         Ok(())
     }