Enhance randomized test to verify SuggestionMap::{chunks,sync}

Co-Authored-By: Max Brunsfeld <max@zed.dev>

crates/rope/src/rope.rs

@@ -31,7 +31,7 @@ const CHUNK_BASE: usize = 16;
 /// hash being equivalent to hashing all the text contained in the [Rope] at once.
 pub type RopeFingerprint = HashMatrix;
 
-#[derive(Clone, Default, Debug)]
+#[derive(Clone, Default)]
 pub struct Rope {
     chunks: SumTree<Chunk>,
 }
@@ -389,6 +389,22 @@ impl fmt::Display for Rope {
     }
 }
 
+impl fmt::Debug for Rope {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        use std::fmt::Write as _;
+
+        write!(f, "\"")?;
+        let mut format_string = String::new();
+        for chunk in self.chunks() {
+            write!(&mut format_string, "{:?}", chunk)?;
+            write!(f, "{}", &format_string[1..format_string.len() - 1])?;
+            format_string.clear();
+        }
+        write!(f, "\"")?;
+        Ok(())
+    }
+}
+
 pub struct Cursor<'a> {
     rope: &'a Rope,
     chunks: sum_tree::Cursor<'a, Chunk, usize>,