public EncryptAlgorithm getQueryEncryptor() {
        return null == assistedQuery ? cipher.getEncryptor() : assistedQuery.getEncryptor();
    }
@Test
    void assertGetQueryEncryptorWithoutAssistedQuery() {
        EncryptAlgorithm cipherAlgorithm = mock(EncryptAlgorithm.class);
        assertThat(new EncryptColumn("foo_tbl", new CipherColumnItem("foo_col", cipherAlgorithm)).getQueryEncryptor(), is(cipherAlgorithm));
    }