diff --git a/src/storage.rs b/src/storage.rs
index a05d74b..aa4556d 100644
--- a/src/storage.rs
+++ b/src/storage.rs
@@ -351,6 +351,7 @@ mod test {
         let height = in_block.height();
         let storage = Storage::new(None, Some(CHAIN_ID)).await?;
         storage.put_block(&in_block).await?;
+        assert!(storage.block_does_exist(height).await?);
         let out_block = storage.get_block(height).await?;
         assert_eq!(out_block, Some(in_block));
         let last_height = storage.last_height().await?;
@@ -379,6 +380,7 @@ mod test {
         let storage = Storage::new(None, Some(CHAIN_ID)).await?;
         let genesis = Genesis::test_value();
         storage.put_genesis(&genesis).await?;
+        assert!(storage.genesis_does_exist(genesis.initial_height()).await?);
         let out = storage
             .get_genesis(genesis.initial_height())
             .await?