fixtures.hh

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#ifndef UTOPIA_CORE_TESTTOOLS_FIXTURES_HH
#define UTOPIA_CORE_TESTTOOLS_FIXTURES_HH
 
#include <memory>
#include <string_view>
#include <random>
 
#include <yaml-cpp/yaml.h>
#include <spdlog/spdlog.h>
#include <spdlog/sinks/stdout_color_sinks.h>
 
#include "../types.hh"
#include "../../data_io/cfg_utils.hh"
 
namespace Utopia::TestTools {
 
 
template<class RNGType=Utopia::DefaultRNG>
struct BaseInfrastructure {
    using RNG = RNGType;
 
    using Config = DataIO::Config;
 
 
    const Config cfg;
 
    std::shared_ptr<spdlog::logger> log;
 
    std::shared_ptr<RNG> rng;
 
    BaseInfrastructure (const std::string& config_file_path = "")
    :
        // Load a configuration file, if a file path was given
        cfg([&config_file_path](){
            if (config_file_path.size()) {
                return YAML::LoadFile(config_file_path);
            }
            return Config{};
        }()),
 
        // Set up a test logger
        log([](){
            auto logger = spdlog::get("test");
 
            // Create it only if it does not already exist
            if (not logger) {
                logger = spdlog::stdout_color_mt("test");
            }
 
            // Set level and global logging pattern
            logger->set_level(spdlog::level::trace);
            spdlog::set_pattern("[%T.%e] [%^%l%$] [%n]  %v");
            // "[HH:MM:SS.mmm] [level(colored)] [logger]  <message>"
 
            return logger;
        }()),
 
        // Set up random number generator (with random seed)
        rng(std::make_shared<RNG>(std::random_device()()))
    {
        log->info("BaseInfrastructure fixture set up.");
        if (config_file_path.size()) {
            log->info("Test configuration loaded from:  {}", config_file_path);
        }
        else {
            log->info("No test configuration file loaded.");
        }
    }
 
    ~BaseInfrastructure () {
        spdlog::drop("test");
    }
};
 
 
} // namespace Utopia::TestTools
 
// end group TestTools
#endif // UTOPIA_CORE_TESTTOOLS_FIXTURES_HH