@Test
 public void encodeShouldReturnNullWhenPathIsNull() {
   String encodedPath = pathEncryptors.encode(null);
   assertNull(encodedPath);
 }
 @Test
 public void decode() {
   String encodedPath = pathEncryptors.encode(path);
   Path decode = pathEncryptors.decode(encodedPath);
   assertThat(decode, equalTo(decode));
 }
 @Test
 public void encodeShouldReturnNotNull() {
   String encodedPath = pathEncryptors.encode(path);
   assertNotNull(encodedPath);
 }