There was a bug with the test I wrote. With the conditions that I passed to parseVersion it would never throw the error

because the value was the same as CURRENT_CIPHERTEXT_VERSION. The test would pass but the error would not be thrown.
It is now fixed and it throws the right error when it receives a wrong version.

Author: josecorella

src/test/java/com/amazonaws/encryptionsdk/model/CiphertextHeadersTest.java

@@ -329,7 +329,7 @@ public void invalidVersion(){
         headerBuff.put((byte) 0);
 
         final CiphertextHeaders reconstructedHeaders = new CiphertextHeaders();
-        reconstructedHeaders.deserialize(headerBuff.array(), 0);
+        reconstructedHeaders.deserialize(headerBuff.array(), 1);
     }
 
     @Test(expected = BadCiphertextException.class)