diff --git a/crates/editor/src/editor.rs b/crates/editor/src/editor.rs
index 3ca5798af451bbab8f38622946deb09121ec9adc..df7a6c7eba716b766651862909617f4efb0f0fce 100644
--- a/crates/editor/src/editor.rs
+++ b/crates/editor/src/editor.rs
@@ -4952,6 +4952,9 @@ impl Editor {
         );
         let offsets =
             snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
+        assert_eq!(anchors_with_status.len(), 2 * self.selections.len());
+        assert_eq!(offsets.len(), anchors_with_status.len());
+
         let offsets = offsets.chunks(2);
         let statuses = anchors_with_status
             .chunks(2)
diff --git a/crates/editor/src/multi_buffer.rs b/crates/editor/src/multi_buffer.rs
index c267ea775fe7800c1d9d1ebc457e360c211fcaf5..4a6169e5d362833acbed6eaa228443081b404d0f 100644
--- a/crates/editor/src/multi_buffer.rs
+++ b/crates/editor/src/multi_buffer.rs
@@ -3664,10 +3664,9 @@ mod tests {
             }
 
             // Anchor resolution
-            for (anchor, resolved_offset) in anchors
-                .iter()
-                .zip(snapshot.summaries_for_anchors::<usize, _>(&anchors))
-            {
+            let summaries = snapshot.summaries_for_anchors::<usize, _>(&anchors);
+            assert_eq!(anchors.len(), summaries.len());
+            for (anchor, resolved_offset) in anchors.iter().zip(summaries) {
                 assert!(resolved_offset <= snapshot.len());
                 assert_eq!(
                     snapshot.summary_for_anchor::<usize>(anchor),