@Test
public void testEncrypt() throws Exception {

    byte[] keyRef = "keyref".getBytes(StandardCharsets.UTF_8);
    byte[] key = "key".getBytes(StandardCharsets.UTF_8);
    byte[] clearData = "clear data".getBytes(StandardCharsets.UTF_8);
    byte[] encodedData = "encoded data".getBytes(StandardCharsets.UTF_8);
    given(keyProvider.getKey(keyRef)).willReturn(Optional.of(key));
    given(encryptionAlgorithm.encrypt(clearData, key)).willReturn(encodedData);
    byte[] res = defaultEncryptor.encrypt(clearData, keyRef);
    assertThat(res).isEqualTo(encodedData);
}