diff --git a/oak-mk/src/test/java/org/apache/jackrabbit/mk/blobs/DbBlobStoreTest.java b/oak-mk/src/test/java/org/apache/jackrabbit/mk/blobs/DbBlobStoreTest.java
index cbb8107..a96d42d 100644
--- a/oak-mk/src/test/java/org/apache/jackrabbit/mk/blobs/DbBlobStoreTest.java
+++ b/oak-mk/src/test/java/org/apache/jackrabbit/mk/blobs/DbBlobStoreTest.java
@@ -16,9 +16,11 @@
  */
 package org.apache.jackrabbit.mk.blobs;
 
-import org.h2.jdbcx.JdbcConnectionPool;
-
+import java.io.ByteArrayInputStream;
 import java.sql.Connection;
+import java.util.Arrays;
+
+import org.h2.jdbcx.JdbcConnectionPool;
 
 /**
  * Tests the DbBlobStore implementation.
@@ -47,4 +49,25 @@ public class DbBlobStoreTest extends AbstractBlobStoreTest {
         cp.dispose();
     }
 
-}
+    public void test() throws Exception {
+        int blobLength = 81;
+        store.setBlockSize(80);
+        store.setBlockSizeMin(48);
+
+        byte[] blob = createBlob(blobLength);
+        String blobId = store.writeBlob(new ByteArrayInputStream(blob));
+        assertNotNull(blobId);
+
+        byte[] readBlob = new byte[blobLength];
+        store.readBlob(blobId, 0, readBlob, 0, readBlob.length);
+        assertTrue(Arrays.equals(blob, readBlob));
+    }
+
+    private byte[] createBlob(int blobLength) {
+        byte[] blob = new byte[blobLength];
+        for (int i = 0; i < blob.length; i++) {
+            blob[i] = (byte)i;
+        }
+        return blob;
+    }
+}
\ No newline at end of file