Method dataFromStr

test-suite/handwritten-src/cpp/data_helpers.cpp:38–41

    }

    DataRef dataFromStr() override {
        std::string buf = "abcd";
        return DataRef(std::move(buf));
    }

    std::vector<uint8_t> sendDataView(const DataView& data) override {
        return {data.buf(), data.buf() + data.len()};