Start on a randomized test for BlockMap

This is currently passing and ensures we maintain the input coordinate
space correctly.

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

crates/editor/src/display_map/patch.rs

@@ -1,4 +1,4 @@
-use std::{cmp, mem, slice};
+use std::{cmp, mem};
 
 type Edit = buffer::Edit<u32>;
 
@@ -10,6 +10,10 @@ impl Patch {
         Self(edits)
     }
 
+    pub fn into_inner(self) -> Vec<Edit> {
+        self.0
+    }
+
     pub fn compose(&self, other: &Self) -> Self {
         let mut old_edits_iter = self.0.iter().cloned().peekable();
         let mut new_edits_iter = other.0.iter().cloned().peekable();
@@ -167,15 +171,6 @@ impl Patch {
     }
 }
 
-impl<'a> IntoIterator for &'a Patch {
-    type Item = &'a Edit;
-    type IntoIter = slice::Iter<'a, Edit>;
-
-    fn into_iter(self) -> Self::IntoIter {
-        self.0.iter()
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;