diff --git a/downstairs/src/region.rs b/downstairs/src/region.rs
index 7fe212fc2..aeadb3523 100644
--- a/downstairs/src/region.rs
+++ b/downstairs/src/region.rs
@@ -2311,12 +2311,11 @@ pub(crate) mod test {
                 .join(extent_file_name(i, ExtentType::Db))
                 .exists());
         }
-        let read_from_region: Vec<u8> = region
-            .region_read(&requests, JobId(0))
-            .await?
-            .into_iter()
-            .flat_map(|i| i.data.to_vec())
-            .collect();
+        let mut read_from_region: Vec<u8> = vec![];
+        for r in region.region_read(&requests, JobId(0)).await?.into_iter() {
+            read_from_region.extend(r.data.iter());
+            assert_eq!(r.block_contexts.len(), 1);
+        }
 
         assert_eq!(buffer.len(), read_from_region.len());
         assert_eq!(buffer, read_from_region);
@@ -2425,12 +2424,11 @@ pub(crate) mod test {
                 .join(extent_file_name(i, ExtentType::Db))
                 .exists());
         }
-        let read_from_region: Vec<u8> = region
-            .region_read(&requests, JobId(0))
-            .await?
-            .into_iter()
-            .flat_map(|i| i.data.to_vec())
-            .collect();
+        let mut read_from_region: Vec<u8> = vec![];
+        for r in region.region_read(&requests, JobId(0)).await?.into_iter() {
+            read_from_region.extend(r.data.iter());
+            assert_eq!(r.block_contexts.len(), 1);
+        }
 
         assert_eq!(buffer.len(), read_from_region.len());
         assert_eq!(buffer, read_from_region);