@Test
public void testIsMd5Hash()
{

    assertTrue(DigestUtils.isMd5Hash(md5HashBinary));
    assertTrue(DigestUtils.isMd5Hash(md5HashUnicode));
    assertFalse(DigestUtils.isMd5Hash(sha256HashBinary));
    assertFalse(DigestUtils.isMd5Hash(sha256HashUnicode));
    assertFalse(DigestUtils.isMd5Hash(""));
    assertFalse(DigestUtils.isMd5Hash(unicodeStr));
}