// ----------------------------------------------------------------------
// Main.cpp
// ----------------------------------------------------------------------

#include "gtest/gtest.h"

#include "CFDP/Checksum/Checksum.hpp"

using namespace CFDP;

const U8 data[] = {0, 1, 2, 3, 4, 5, 6, 7, 8};

const U32 expectedValue = (data[0] << 3 * 8) + (data[1] << 2 * 8) + (data[2] << 1 * 8) + data[3] + (data[4] << 3 * 8) +
                          (data[5] << 2 * 8) + (data[6] << 1 * 8) + data[7];

TEST(Checksum, OnePacket) {
    Checksum checksum;
    checksum.update(data, 0, 8);
    ASSERT_EQ(expectedValue, checksum.getValue());
}

TEST(Checksum, TwoPacketsAligned) {
    Checksum checksum;
    checksum.update(&data[0], 0, 4);
    checksum.update(&data[4], 4, 4);
    ASSERT_EQ(expectedValue, checksum.getValue());
}

TEST(Checksum, TwoPacketsUnaligned1) {
    Checksum checksum;
    checksum.update(&data[0], 0, 3);
    checksum.update(&data[3], 3, 5);
    ASSERT_EQ(expectedValue, checksum.getValue());
}

TEST(Checksum, TwoPacketsUnaligned2) {
    Checksum checksum;
    checksum.update(&data[0], 0, 5);
    checksum.update(&data[5], 5, 3);
    ASSERT_EQ(expectedValue, checksum.getValue());
}

TEST(Checksum, ThreePackets) {
    Checksum checksum;
    checksum.update(&data[0], 0, 2);
    checksum.update(&data[2], 2, 3);
    checksum.update(&data[5], 5, 3);
    ASSERT_EQ(expectedValue, checksum.getValue());
}

int main(int argc, char** argv) {
    ::testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}