static void
ble_att_clt_test_misc_prep_good(uint16_t handle, uint16_t offset,
                                uint8_t *attr_data, uint16_t attr_data_len)
{
    struct ble_att_prep_write_cmd req;
    struct os_mbuf *om;
    uint16_t conn_handle;
    int rc;
    int i;

    conn_handle = ble_att_clt_test_misc_init();

    req.bapc_handle = handle;
    req.bapc_offset = offset;
    rc = ble_att_clt_tx_prep_write(conn_handle, &req, attr_data,
                                   attr_data_len);
    TEST_ASSERT(rc == 0);

    ble_hs_test_util_tx_all();
    om = ble_hs_test_util_prev_tx_dequeue_pullup();
    TEST_ASSERT_FATAL(om != NULL);
    TEST_ASSERT(om->om_len == BLE_ATT_PREP_WRITE_CMD_BASE_SZ + attr_data_len);

    ble_att_prep_write_req_parse(om->om_data, om->om_len, &req);
    TEST_ASSERT(req.bapc_handle == handle);
    TEST_ASSERT(req.bapc_offset == offset);
    for (i = 0; i < attr_data_len; i++) {
        TEST_ASSERT(om->om_data[BLE_ATT_PREP_WRITE_CMD_BASE_SZ + i] ==
                    attr_data[i]);
    }
}
static void
ble_att_clt_test_misc_prep_bad(uint16_t handle, uint16_t offset,
                               uint8_t *attr_data, uint16_t attr_data_len,
                               int status)
{
    struct ble_att_prep_write_cmd req;
    uint16_t conn_handle;
    int rc;

    conn_handle = ble_att_clt_test_misc_init();

    req.bapc_handle = handle;
    req.bapc_offset = offset;
    rc = ble_att_clt_tx_prep_write(conn_handle, &req, attr_data,
                                   attr_data_len);
    TEST_ASSERT(rc == status);
}
static void
ble_att_clt_test_misc_prep_bad(uint16_t handle, uint16_t offset,
                               uint8_t *attr_data, uint16_t attr_data_len,
                               int status)
{
    struct ble_att_prep_write_cmd req;
    struct ble_l2cap_chan *chan;
    struct ble_hs_conn *conn;
    int rc;

    ble_att_clt_test_misc_init(&conn, &chan);

    req.bapc_handle = handle;
    req.bapc_offset = offset;
    rc = ble_att_clt_tx_prep_write(conn->bhc_handle, &req, attr_data,
                                   attr_data_len);
    TEST_ASSERT(rc == status);
}