store/main_test.cpp at master · Arnold1/store · GitHub

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#include "log_container.h"
#include "log_container_iterator.h"
#include "log_formatter.h"
#include "util.h"
#include <iostream>
#include <string>
#include <cassert>
#include <thread>
#include <chrono>
#include <sstream>
#include <mutex>
#include <locale>

class thread_test {
  private:
    log_container *log_;
    std::mutex lock_;
    std::vector<std::vector<std::string>> out_;

  public:
    thread_test(log_container *log): log_(log) {}

    void write_thread() {
        for (uint64_t i = 1; i <= 100; i++) {
            log_->append(string_record(random_string(100) + int_to_string(i)));

            std::this_thread::sleep_for(std::chrono::milliseconds(50));
        }
    }

    void read_thread() {
        std::vector<std::string> records;

        std::this_thread::sleep_for(std::chrono::milliseconds(1000));

        for (log_container_iterator itr = log_->begin(); itr != log_->end(); itr++) {
            records.push_back(log_formatter::to_string(*itr));
        }

        std::lock_guard<std::mutex> lock(lock_);
        out_.push_back(records);
    }

    std::vector<std::vector<std::string>> get_out() const {
        return std::move(out_);
    }
};

bool check_read_data(std::vector<std::vector<std::string>> &&out) {
    for (auto &vec : out) {
        uint64_t prev_count = 0;

        for (auto &e : vec) {
            size_t pos = e.find_first_of("0123456789");
            if (pos == std::string::npos) {
                return false;
            }

            std::string counter = e.substr(pos, e.size() - pos);
            uint64_t count = string_to_int(counter);

            if (count <= prev_count) {
                return false;
            }

            prev_count = count;
        }
    }

    return true;
}

void multithreading_test() {
    log_container log("system_log");
    thread_test t(&log);

    std::vector<std::thread> workers;

    // create write thread
    workers.push_back(std::thread(&thread_test::write_thread, &t));

    // create multiple read threads
    for (uint64_t i = 0; i < 10; i++) {
        workers.push_back(std::thread(&thread_test::read_thread, &t));
    }

    // wait for all threads to finish
    for (auto& thread : workers) {
        thread.join();
    }

    // check read data
    assert(check_read_data(t.get_out()) == true);

    // empty log store
    uint64_t pos = log.get_position();
    log.truncate(pos-1);

    assert(log.get_size() == 0);
}

void basic_test() {
    std::string out;

    log_container log("system_log");
    log.append(string_record("hello_how_are_you"));
    log.append(string_record("_great"));
    log.append(string_record("_amazing"));
    log.append(string_record("_yes"));

    assert(log.get_size() == 4);

    out.clear();

    for (log_container_iterator itr = log.begin(); itr != log.end(); itr++) {
        out += log_formatter::to_string(*itr);
    }

    assert(out == "hello_how_are_you_great_amazing_yes");

    log.truncate(0);
    assert(log.get_size() == 3);

    out.clear();
    for (log_container_iterator itr = log.begin(); itr != log.end(); itr++) {
        out += log_formatter::to_string(*itr);
    }

    assert(out == "_great_amazing_yes");

    log.append(string_record("_wonderful"));

    assert(log.get_size() == 4);

    out.clear();
    for (log_container_iterator itr = log.begin(); itr != log.end(); itr++) {
        out += log_formatter::to_string(*itr);
    }

    assert(out == "_great_amazing_yes_wonderful");

    // empty log store
    uint64_t pos = log.get_position();
    log.truncate(pos-1);

    assert(log.get_size() == 0);
}

int main() {

    basic_test();
    multithreading_test();

    return 0;
}