diff --git a/deltaq-tests/BsDiffTests.cs b/deltaq-tests/BsDiffTests.cs
index 697df62..40923e8 100644
--- a/deltaq-tests/BsDiffTests.cs
+++ b/deltaq-tests/BsDiffTests.cs
@@ -76,6 +76,22 @@ public void BsDiffCreateFromBuffers()
                 }
         }
 
+        [Test]
+        public void BsDiffCreateFromBuffers_Identical()
+        {
+            foreach (var oldBuffer in GetBuffers(Sizes))
+            {
+                var newBuffer = new byte[oldBuffer.Length];
+                Buffer.BlockCopy(oldBuffer, 0, newBuffer, 0, oldBuffer.Length);
+                
+                var patchBuf = BsDiffCreate(oldBuffer, newBuffer);
+                var finishedBuf = BsDiffApply(oldBuffer, patchBuf);
+
+                Assert.AreEqual(oldBuffer, finishedBuf);
+                Assert.AreEqual(newBuffer, finishedBuf);
+            }
+        }
+
         [Test]
         public void BsDiffCreateFromStreams()
         {