--- a/src/db_impl.rs	Wed Sep 27 05:13:41 2017 +0000
+++ b/src/db_impl.rs	Wed Sep 27 05:25:52 2017 +0000
@@ -877,7 +877,7 @@
                      env.children(Path::new("db/")).unwrap());
             let mut opt = opt.clone();
             opt.reuse_manifest = false;
-            let db = DB::open("db", opt.clone()).unwrap();
+            let mut db = DB::open("db", opt.clone()).unwrap();
 
             println!("children after: {:?}",
                      env.children(Path::new("db/")).unwrap());
@@ -900,6 +900,7 @@
                            .unwrap()
                            .0
                            .as_slice());
+            db.put("abe".as_bytes(), "def".as_bytes()).unwrap();
         }
 
         {
@@ -919,6 +920,13 @@
             assert!(env.exists(Path::new("db/000004.log")).unwrap());
             // 000004 should be reused, no new log file should be created.
             assert!(!env.exists(Path::new("db/000006.log")).unwrap());
+            // Log is reused, so memtable should contain last written entry from above.
+            assert_eq!(1, db.mem.len());
+            assert_eq!("def".as_bytes(),
+                       db.mem
+                           .get(&LookupKey::new("abe".as_bytes(), 3))
+                           .unwrap()
+                           .as_slice());
         }
     }