tests/unit/test_ndproxy_table.cpp

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#include "openthread-core-config.h"

#if OPENTHREAD_FTD && OPENTHREAD_CONFIG_BACKBONE_ROUTER_DUA_NDPROXYING_ENABLE

#include "test_platform.h"

#include <openthread/config.h>
#include <openthread/ip6.h>

#include "test_util.h"
#include "backbone_router/ndproxy_table.hpp"
#include "common/code_utils.hpp"
#include "instance/instance.hpp"

namespace ot {

static Instance *sInstance;

using namespace ot::BackboneRouter;

Ip6::InterfaceIdentifier generateRandomIid(uint16_t aIndex)
{
    Ip6::InterfaceIdentifier iid;

    Random::NonCrypto::Fill(iid);
    iid.mFields.m16[3] = aIndex;

    return iid;
}

void TestNdProxyTable(void)
{
    Error error;

    sInstance = testInitInstance();
    VerifyOrQuit(sInstance != nullptr);

    BackboneRouter::NdProxyTable &table = sInstance->Get<BackboneRouter::NdProxyTable>();

    Ip6::InterfaceIdentifier existedAddressIid    = generateRandomIid(0);
    Ip6::InterfaceIdentifier existedMeshLocalIid  = generateRandomIid(0);
    Ip6::InterfaceIdentifier notExistAddressIid   = generateRandomIid(OPENTHREAD_CONFIG_NDPROXY_TABLE_ENTRY_NUM);
    Ip6::InterfaceIdentifier notExistMeshLocalIid = generateRandomIid(OPENTHREAD_CONFIG_NDPROXY_TABLE_ENTRY_NUM);

    // Reregister address IID when there are enough room should succeed.
    SuccessOrQuit(table.Register(existedAddressIid, existedMeshLocalIid, 0, nullptr));
    VerifyOrQuit(table.IsRegistered(existedAddressIid));
    VerifyOrQuit(!table.IsRegistered(notExistAddressIid));

    for (uint16_t i = 1; i < OPENTHREAD_CONFIG_NDPROXY_TABLE_ENTRY_NUM; i++)
    {
        Ip6::InterfaceIdentifier addressIid   = generateRandomIid(i);
        Ip6::InterfaceIdentifier meshLocalIid = generateRandomIid(i);

        // Reregister address IID when there are enough room should succeed.
        SuccessOrQuit(table.Register(addressIid, meshLocalIid, i, nullptr));

        VerifyOrQuit(table.IsRegistered(addressIid));

        // Reregister the same address IID should always succeed.
        SuccessOrQuit(table.Register(addressIid, meshLocalIid, i, nullptr));

        // Register the same address IID with a different ML-IID should fail.
        VerifyOrQuit(table.Register(addressIid, notExistMeshLocalIid, i, nullptr) == kErrorDuplicated);

        VerifyOrQuit(table.IsRegistered(addressIid));
    }

    // Now the table is full, registering another IID should fail.
    VerifyOrQuit(table.Register(notExistAddressIid, notExistMeshLocalIid, OPENTHREAD_CONFIG_NDPROXY_TABLE_ENTRY_NUM,
                                nullptr) == kErrorNoBufs);
    VerifyOrQuit(!table.IsRegistered(notExistAddressIid));
}

} // namespace ot

int main(void)
{
    ot::TestNdProxyTable();

    printf("\nAll tests passed.\n");
    return 0;
}

#else
int main(void) { return 0; }
#endif // OPENTHREAD_FTD && OPENTHREAD_CONFIG_BACKBONE_ROUTER_DUA_NDPROXYING_ENABLE