public EncryptAlgorithm getQueryEncryptor() {
        return null == assistedQuery ? cipher.getEncryptor() : assistedQuery.getEncryptor();
    }
@Test
    void assertGetQueryEncryptorWithAssistedQuery() {
        EncryptColumn encryptColumn = new EncryptColumn("foo_tbl", new CipherColumnItem("foo_cipher_col", mock(EncryptAlgorithm.class)));
        EncryptAlgorithm assistedQueryAlgorithm = mock(EncryptAlgorithm.class);
        encryptColumn.setAssistedQuery(new AssistedQueryColumnItem("foo_assisted_query_col", assistedQueryAlgorithm));
        assertThat(encryptColumn.getQueryEncryptor(), is(assistedQueryAlgorithm));
    }