New-Cli-Installer/gucc/tests/unit-fetch_file.cpp

#include "gucc/fetch_file.hpp"
#include "gucc/file_utils.hpp"

#include <cassert>

#include <filesystem>
#include <string_view>

#include <fmt/format.h>

namespace fs = std::filesystem;
using namespace std::string_view_literals;

int main() {
    // existing remote url, non existent fallback url
    static constexpr std::string_view LICENSE_PATH = GUCC_TOP_DIR "/LICENSE";
    {
        static constexpr auto remote_url = "https://github.com/CachyOS/New-Cli-Installer/raw/master/LICENSE"sv;

        const auto& file_content = gucc::fetch::fetch_file_from_url(remote_url, "file:///ter-testunit");
        assert(file_content);
        assert(!file_content->empty());

        const auto& expected_file_content = gucc::file_utils::read_whole_file(LICENSE_PATH);
        assert(file_content == expected_file_content);
    }
    // non existent remote url, existing fallback url
    {
        static constexpr auto remote_url = "https://github.com/CachyOS/New-Cli-Installer/raw/master/LCNS"sv;

        const auto& file_content = gucc::fetch::fetch_file_from_url(remote_url, fmt::format("file://{}", LICENSE_PATH));
        assert(file_content);
        assert(!file_content->empty());

        const auto& expected_file_content = gucc::file_utils::read_whole_file(LICENSE_PATH);
        assert(file_content == expected_file_content);
    }
    // non existent remote url, non existent fallback url
    {
        static constexpr auto remote_url = "https://github.com/CachyOS/New-Cli-Installer/raw/master/LCNS"sv;

        const auto& file_content = gucc::fetch::fetch_file_from_url(remote_url, "file:///ter-testunit");
        assert(!file_content);
    }
}