resp.decode(packet, 0, false);

        // Unrecognized context types lead to an empty array, not null
        assertNotNull(resp.getCreateContexts());
        assertEquals(0, resp.getCreateContexts().length);
    }

    @Test
    void prepare_setsFileId_whenReceived_andNextSupportsIt() throws Exception {
        Configuration config = Mockito.mock(Configuration.class);