tests/unit/test_flash.cpp

/*
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 *     derived from this software without specific prior written permission.
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#include <openthread/platform/flash.h>

#include <stdint.h>
#include <stdio.h>
#include <string.h>

#include "utils/flash.hpp"

#include "test_platform.h"
#include "test_util.h"

namespace ot {

void TestFlash(void)
{
#if OPENTHREAD_CONFIG_PLATFORM_FLASH_API_ENABLE
    uint8_t readBuffer[256];
    uint8_t writeBuffer[256];

    Instance *instance = testInitInstance();
    Flash     flash(*instance);

    for (uint32_t i = 0; i < sizeof(readBuffer); i++)
    {
        readBuffer[i] = i & 0xff;
    }

    flash.Init();

    // No records in settings

    VerifyOrQuit(flash.Delete(0, 0) == kErrorNotFound);
    VerifyOrQuit(flash.Get(0, 0, nullptr, nullptr) == kErrorNotFound);

    // Multiple records with different keys

    for (uint16_t key = 0; key < 16; key++)
    {
        uint16_t length = key;

        SuccessOrQuit(flash.Add(key, writeBuffer, length));
    }

    for (uint16_t key = 0; key < 16; key++)
    {
        uint16_t length = key;

        SuccessOrQuit(flash.Get(key, 0, readBuffer, &length));
        VerifyOrQuit(length == key, "Get() did not return expected length");
        VerifyOrQuit(memcmp(readBuffer, writeBuffer, length) == 0, "Get() did not return expected value");
    }

    for (uint16_t key = 0; key < 16; key++)
    {
        SuccessOrQuit(flash.Delete(key, 0));
    }

    for (uint16_t key = 0; key < 16; key++)
    {
        VerifyOrQuit(flash.Delete(key, 0) == kErrorNotFound);
        VerifyOrQuit(flash.Get(key, 0, nullptr, nullptr) == kErrorNotFound);
    }

    // Multiple records with the same key

    for (uint16_t index = 0; index < 16; index++)
    {
        uint16_t length = index;

        SuccessOrQuit(flash.Add(0, writeBuffer, length));
    }

    for (uint16_t index = 0; index < 16; index++)
    {
        uint16_t length = index;

        SuccessOrQuit(flash.Get(0, index, readBuffer, &length));
        VerifyOrQuit(length == index, "Get() did not return expected length");
        VerifyOrQuit(memcmp(readBuffer, writeBuffer, length) == 0, "Get() did not return expected value");
    }

    for (uint16_t index = 0; index < 16; index++)
    {
        SuccessOrQuit(flash.Delete(0, 0));
    }

    VerifyOrQuit(flash.Delete(0, 0) == kErrorNotFound);
    VerifyOrQuit(flash.Get(0, 0, nullptr, nullptr) == kErrorNotFound);

    // Multiple records with the same key

    for (uint16_t index = 0; index < 16; index++)
    {
        uint16_t length = index;

        if ((index % 4) == 0)
        {
            SuccessOrQuit(flash.Set(0, writeBuffer, length));
        }
        else
        {
            SuccessOrQuit(flash.Add(0, writeBuffer, length));
        }
    }

    for (uint16_t index = 0; index < 4; index++)
    {
        uint16_t length = index + 12;

        SuccessOrQuit(flash.Get(0, index, readBuffer, &length));
        VerifyOrQuit(length == (index + 12), "Get() did not return expected length");
        VerifyOrQuit(memcmp(readBuffer, writeBuffer, length) == 0, "Get() did not return expected value");
    }

    for (uint16_t index = 0; index < 4; index++)
    {
        SuccessOrQuit(flash.Delete(0, 0));
    }

    VerifyOrQuit(flash.Delete(0, 0) == kErrorNotFound);
    VerifyOrQuit(flash.Get(0, 0, nullptr, nullptr) == kErrorNotFound);

    // Wipe()

    for (uint16_t key = 0; key < 16; key++)
    {
        uint16_t length = key;

        SuccessOrQuit(flash.Add(key, writeBuffer, length));
    }

    flash.Wipe();

    for (uint16_t key = 0; key < 16; key++)
    {
        VerifyOrQuit(flash.Delete(key, 0) == kErrorNotFound);
        VerifyOrQuit(flash.Get(key, 0, nullptr, nullptr) == kErrorNotFound);
    }

    // Test swap

    for (uint16_t index = 0; index < 4096; index++)
    {
        uint16_t key    = index & 0xf;
        uint16_t length = index & 0xf;

        SuccessOrQuit(flash.Set(key, writeBuffer, length));
    }

    for (uint16_t key = 0; key < 16; key++)
    {
        uint16_t length = key;

        SuccessOrQuit(flash.Get(key, 0, readBuffer, &length));
        VerifyOrQuit(length == key, "Get() did not return expected length");
        VerifyOrQuit(memcmp(readBuffer, writeBuffer, length) == 0, "Get() did not return expected value");
    }
#endif // OPENTHREAD_CONFIG_PLATFORM_FLASH_API_ENABLE
}

} // namespace ot

int main(void)
{
    ot::TestFlash();
    printf("All tests passed\n");
    return 0;
}