C++ (Cpp) cdv Beispiele

Beispiel #1

Datei: data_view_test.cpp Projekt: MaheshOruganti/mongo-cxx-driver-legacy-1.1.0

TEST(DataView, ConstDataView) {
    char buf[sizeof(uint32_t) * 3];
    uint32_t native = 1234;
    uint32_t le = endian::nativeToLittle(native);
    uint32_t be = endian::nativeToBig(native);

    std::memcpy(buf, &native, sizeof(uint32_t));
    std::memcpy(buf + sizeof(uint32_t), &le, sizeof(uint32_t));
    std::memcpy(buf + sizeof(uint32_t) * 2, &be, sizeof(uint32_t));

    ConstDataView cdv(buf);

    ASSERT_EQUALS(buf, cdv.view());
    ASSERT_EQUALS(buf + 5, cdv.view(5));

    ASSERT_EQUALS(native, cdv.readNative<uint32_t>());
    ASSERT_EQUALS(native, cdv.readLE<uint32_t>(sizeof(uint32_t)));
    ASSERT_EQUALS(native, cdv.readBE<uint32_t>(sizeof(uint32_t) * 2));
}

Beispiel #2

Datei: data_range_test.cpp Projekt: EvgeniyPatlan/percona-server-mongodb

TEST(DataRange, ConstDataRange) {
    char buf[sizeof(uint32_t) * 3];
    uint32_t native = 1234;
    uint32_t le = endian::nativeToLittle(native);
    uint32_t be = endian::nativeToBig(native);

    std::memcpy(buf, &native, sizeof(uint32_t));
    std::memcpy(buf + sizeof(uint32_t), &le, sizeof(uint32_t));
    std::memcpy(buf + sizeof(uint32_t) * 2, &be, sizeof(uint32_t));

    ConstDataRange cdv(buf, buf + sizeof(buf));

    ASSERT_EQUALS(native, cdv.read<uint32_t>().getValue());
    ASSERT_EQUALS(native, cdv.read<LittleEndian<uint32_t>>(sizeof(uint32_t)).getValue());
    ASSERT_EQUALS(native, cdv.read<BigEndian<uint32_t>>(sizeof(uint32_t) * 2).getValue());

    auto result = cdv.read<uint32_t>(sizeof(uint32_t) * 3);
    ASSERT_EQUALS(false, result.isOK());
    ASSERT_EQUALS(ErrorCodes::Overflow, result.getStatus().code());
}