Added cmd arg handling to set log level

.forgejo/workflows/pr_check.yaml

@@ -134,6 +134,8 @@ jobs:
             -GNinja -DCMAKE_BUILD_TYPE=Release   \
             -DENABLE_EXAMPLES=ON                 \
             -DENABLE_TESTS=ON                    \
+            -DMAX_LOG_LEVEL=0                        \
+            -DTEST_MAX_LOG_LEVEL=0                   \
             -DCMAKE_CXX_FLAGS="-ftemplate-backtrace-limit=0"
           cmake --build ${{ github.workspace }}/build_gcc --parallel `nproc`
 
@@ -142,7 +144,7 @@ jobs:
         continue-on-error: true
         run: |
           cd ${{ github.workspace }}/build_gcc
-          ./larra_xmpp_tests
+          ./larra_xmpp_tests --MAX_LOG_LEVEL=0
 
       - name: Clang build (only configuring)
         id: clang_build
@@ -160,6 +162,8 @@ jobs:
             -GNinja -DCMAKE_BUILD_TYPE=Release     \
             -DENABLE_EXAMPLES=ON                   \
             -DENABLE_TESTS=ON                      \
+            -DMAX_LOG_LEVEL=0                          \
+            -DTEST_MAX_LOG_LEVEL=0                     \
             -DCMAKE_CXX_FLAGS="-stdlib=libc++ -I/home/LLVM-${LLVM_VER}/include/c++/v1 -fno-modules"
 
           echo "::group::compile_commands.json content"

.vscode/launch.json

@@ -9,7 +9,10 @@
             "request": "launch",
             "name": "Debug: connect",
             "program": "${workspaceFolder}/build/examples/output/connect",
-            "args": [],
+            "args": [
+                "--log_level=0"
+                // --gtest_filter=POSTIVE_PATTERNS[-NEGATIVE_PATTERNS]
+            ],
             "cwd": "${workspaceFolder}",
             "preLaunchTask": "GCC: Build"
         },
@@ -19,6 +22,7 @@
             "name": "Debug: tests",
             "program": "${workspaceFolder}/build/larra_xmpp_tests",
             "args": [
+                "--log_level=0"
                 // --gtest_filter=POSTIVE_PATTERNS[-NEGATIVE_PATTERNS]
                 // "--gtest_filter=Roster*"
             ],

.vscode/tasks.json

@@ -80,7 +80,7 @@
                 "cd ${workspaceFolder} &&",
                 "mkdir -p build && cd build &&",
                 "cmake cmake -Wno-dev ",
-                "   -DCMAKE_BUILD_TYPE=Debug -DENABLE_EXAMPLES=ON -DENABLE_TESTS=ON .."
+                "   -DCMAKE_BUILD_TYPE=Debug -DENABLE_EXAMPLES=ON -DENABLE_TESTS=ON -DLOG_LEVEL=0 -DTEST_LOG_LEVEL=0 .."
             ],
             "options": {
                 "env": {
@@ -138,6 +138,7 @@
                 "mkdir -p build_clang && cd build_clang &&",
                 "cmake -Wno-dev ",
                 "   -DCMAKE_BUILD_TYPE=Debug -DENABLE_EXAMPLES=ON -DENABLE_TESTS=ON ",
+                "   -DLOG_LEVEL=0 -DTEST_LOG_LEVEL=0",
                 "   -DCMAKE_CXX_FLAGS=\"-stdlib=libstdc++\"",
                 "   -DCMAKE_EXE_LINKER_FLAGS=\"-L/usr/lib/x86_64-linux-gnu -lstdc++\" .."
             ],
@@ -160,6 +161,7 @@
                 "mkdir -p build_clang && cd build_clang &&",
                 "cmake -Wno-dev ",
                 "   -DCMAKE_BUILD_TYPE=Debug -DENABLE_EXAMPLES=ON -DENABLE_TESTS=ON",
+                "   -DLOG_LEVEL=0 -DTEST_LOG_LEVEL=0"
                 //
                 // Uncomment for GCC standart library: libstdc++
                 //"   -DCMAKE_CXX_FLAGS=\"-stdlib=libstdc++ -fno-omit-frame-pointer -g -fsanitize=address,undefined,leak,function,nullability,vptr\"",
@@ -211,6 +213,7 @@
                 "mkdir -p build_clang && cd build_clang &&",
                 "cmake -Wno-dev ",
                 "   -DCMAKE_BUILD_TYPE=Debug -DENABLE_EXAMPLES=ON -DENABLE_TESTS=ON ",
+                "   -DLOG_LEVEL=0 -DTEST_LOG_LEVEL=0",
                 "   -DCMAKE_CXX_FLAGS=\"-stdlib=libstdc++ -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer -fno-optimize-sibling-calls -g -fsanitize=memory\"",
                 "   -DCMAKE_EXE_LINKER_FLAGS=\"-L/usr/lib/x86_64-linux-gnu -lstdc++ -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer -fno-optimize-sibling-calls -g -fsanitize=memory\" ..",
             ],

CMakeLists.txt

@@ -18,11 +18,12 @@ set(CMAKE_CXX_EXTENSIONS OFF)
 set(FMT_MODULE OFF)
 set(UTEMPL_MODULE OFF)
 set(CXX_EXTENSIONS NO)
-set(BOOST_INCLUDE_LIBRARIES "pfr;asio;serialization")
+set(BOOST_INCLUDE_LIBRARIES "pfr;asio;serialization;program_options")
 option(CPM_USE_LOCAL_PACKAGES "Use local packages" ON)
 option(UTEMPL_USE_LOCAL_PACKAGE "Use utempl local package" OFF)
 option(BUILD_EXECUTABLE ON)
-set(LOG_LEVEL 0 "Available log levels: 0=TRACE, 1=DEBUG,2= INFO,3= WARN, 4=ERROR, 5=CRITICAL, 6=OFF") # Compile program with highest available log levle to trace everything
+set(MAX_LOG_LEVEL 2 CACHE STRING "Available log levels: 0=TRACE, 1=DEBUG, 2=INFO, 3=WARN, 4=ERROR, 5=CRITICAL, 6=OFF")
+set(TEST_MAX_LOG_LEVEL 2 CACHE STRING "Available log levels: 0=TRACE, 1=DEBUG, 2=INFO, 3=WARN, 4=ERROR, 5=CRITICAL, 6=OFF")
 set(UTEMPL_URL
   "https://sha512sum.xyz/git/sha512sum/utempl"
   CACHE STRING "utempl repository URL")
@@ -176,11 +177,11 @@ target_include_directories(larra_xmpp PUBLIC
 
 if(TARGET Boost::pfr)
   target_link_libraries(larra_xmpp PUBLIC
-    Boost::asio Boost::serialization utempl::utempl
+    Boost::asio Boost::serialization Boost::program_options utempl::utempl
     OpenSSL::SSL nameof::nameof fmt::fmt
     OpenSSL::Crypto spdlog xmlplusplus ${LIBXML2_LIBRARIES})
 else()
-  find_package(Boost 1.85.0 COMPONENTS serialization REQUIRED)
+  find_package(Boost 1.85.0 COMPONENTS serialization program_options REQUIRED)
   target_link_libraries(larra_xmpp PUBLIC
     utempl::utempl ${Boost_LIBRARIES} OpenSSL::SSL
     nameof::nameof fmt::fmt
@@ -260,7 +261,7 @@ if(ENABLE_TESTS)
   target_sources(larra_xmpp_tests PUBLIC ${SOURCES})
   target_link_libraries(larra_xmpp_tests GTest::gtest_main
     larra_xmpp)
-  target_compile_definitions(larra_xmpp_tests PRIVATE SPDLOG_ACTIVE_LEVEL=0) # SPDLOG_LEVEL_TRACE=0. Check LOG_LEVEL variable and spdlog documentation for more details
+  target_compile_definitions(larra_xmpp_tests PRIVATE SPDLOG_ACTIVE_LEVEL=${TEST_MAX_LOG_LEVEL})
   set_property(TARGET larra_xmpp_tests PROPERTY CXX_STANDARD 23)
   include(GoogleTest)
   gtest_discover_tests(larra_xmpp_tests)
@@ -272,8 +273,7 @@ if(ENABLE_EXAMPLES)
       get_filename_component(EXAMPLE_NAME ${EXAMPLE_SRC} NAME_WE)
       add_executable(${EXAMPLE_NAME} ${EXAMPLE_SRC})
       target_link_libraries(${EXAMPLE_NAME} larra_xmpp)
-      # TODO(unknown): Fixed 'command line' error occured and uncomment below
-      # target_compile_definitions(${EXAMPLE_NAME} PRIVATE SPDLOG_ACTIVE_LEVEL=${LOG_LEVEL})
+      target_compile_definitions(${EXAMPLE_NAME} PRIVATE SPDLOG_ACTIVE_LEVEL=${TEST_MAX_LOG_LEVEL})
       set_property(TARGET ${EXAMPLE_NAME} PROPERTY CXX_STANDARD 23)
       set_target_properties(${EXAMPLE_NAME} PROPERTIES
         RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/examples/output")

examples/src/connect.cpp

@@ -3,11 +3,28 @@
 
 #include <boost/asio/co_spawn.hpp>
 #include <boost/asio/detached.hpp>
+#include <boost/program_options.hpp>
 #include <larra/client/client.hpp>
 #include <larra/presence.hpp>
 #include <larra/printer_stream.hpp>
 #include <print>
 
+// clang-format off
+constexpr auto ToString(spdlog::level::level_enum e) {
+  switch (e) {
+    case spdlog::level::trace: return "TRACE";
+    case spdlog::level::debug: return "DEBUG";
+    case spdlog::level::info: return "INFO";
+    case spdlog::level::warn: return "WARNING";
+    case spdlog::level::err: return "ERROR";
+    case spdlog::level::critical: return "CRITICAL";
+    case spdlog::level::off: return "OFF";
+    default:
+      return "INVALID";
+  }
+}
+// clang-format on
+
 namespace iq = larra::xmpp::iq;
 
 auto Coroutine() -> boost::asio::awaitable<void> {
@@ -50,16 +67,38 @@ auto Coroutine() -> boost::asio::awaitable<void> {
   SPDLOG_INFO("Done connecting client!");
 }
 
-auto main() -> int {
-  spdlog::set_level(spdlog::level::trace);
+namespace po = boost::program_options;
 
-#ifdef SPDLOG_ACTIVE_LEVEL
-  std::println("\n\tCompiled max available log level: {}\n\tCurrently set log level: {}",
-               SPDLOG_ACTIVE_LEVEL,
-               std::to_underlying(spdlog::get_level()));
-#else
-  std::println("\n\tCurrently set log level: {}", std::to_underlying(spdlog::get_level()));
-#endif
+auto main(int argc, char** argv) -> int {
+  // Define options
+  po::options_description desc("Allowed options");
+  desc.add_options()("help,h", "Print help message")("log_level,l",
+                                                     po::value<int>()->default_value(SPDLOG_LEVEL_INFO),
+                                                     "Set log level: 0=TRACE, 1=DEBUG, 2=INFO, 3=WARN, 4=ERROR, 5=CRITICAL, 6=OFF");
+
+  // Parse command-line arguments
+  po::variables_map vm;
+  try {
+    po::store(po::parse_command_line(argc, argv, desc), vm);
+    po::notify(vm);
+
+    if(vm["log_level"].as<int>() < spdlog::level::level_enum::trace || vm["log_level"].as<int>() > spdlog::level::level_enum::off) {
+      throw std::invalid_argument{
+          std::format("Invalid argument value for '--log_level' option. Check option description for more details")};
+    }
+    if(vm["log_level"].as<int>() < SPDLOG_ACTIVE_LEVEL) {
+      SPDLOG_WARN("Specified log_level '{}' is lower than max available one '{}'. Log level will be changed according to the maximum one",
+                  vm["log_level"].as<int>(),
+                  SPDLOG_ACTIVE_LEVEL);
+    }
+  } catch(const po::error& e) {
+    SPDLOG_CRITICAL("Cmd parse error: {}", e.what());
+    return 1;
+  }
+
+  // Cmd options handling
+  spdlog::set_level(static_cast<spdlog::level::level_enum>(vm["log_level"].as<int>()));
+  std::println("\nEnvironment setup:\n\tCurrently set log level: {}\n", ToString(spdlog::get_level()));
 
   boost::asio::io_context io_context;
   boost::asio::co_spawn(io_context, Coroutine(), boost::asio::detached);

library/include/larra/iq.hpp

@@ -1,9 +1,9 @@
 #pragma once
 #include <spdlog/spdlog.h>
 
-#include <larra/iq_error.hpp>
 #include <larra/jid.hpp>
 #include <larra/serialization.hpp>
+#include <larra/stanza_error.hpp>
 #include <larra/utils.hpp>
 #include <optional>
 #include <stdexcept>
@@ -118,7 +118,7 @@ using Error = BaseImplWithPayload<kErrorName, Payload>;
 
 }  // namespace iq
 
-using IqError = iq::Error<iq::error::IqError>;
+using IqError = iq::Error<stanza::error::StanzaError>;
 
 template <typename Payload>
 using Iq = std::variant<iq::Get<Payload>, iq::Set<Payload>, iq::Result<Payload>, IqError>;

library/include/larra/iq_error.hpp

@@ -1,152 +0,0 @@
-#pragma once
-#include <libxml++/libxml++.h>
-
-#include <larra/utils.hpp>
-#include <optional>
-#include <variant>
-
-namespace larra::xmpp::iq::error {
-
-namespace impl {
-
-struct IqBaseError : std::exception {};
-
-// DO NOT MOVE TO ANOTHER NAMESPACE(where no heirs). VIA friend A FUNCTION IS ADDED THAT VIA ADL WILL BE SEARCHED FOR HEIRS
-// C++20 modules very unstable in clangd :(
-template <typename T>
-struct IqErrorImpl : IqBaseError {
-  static constexpr auto kDefaultName = "error";
-  static constexpr auto kDefaultNamespace = "urn:ietf:params:xml:ns:xmpp-stanzas";
-  static inline const auto kKebabCaseName = static_cast<std::string>(utils::ToKebabCaseName<T>());
-
-  static constexpr auto kErrorMessage = [] -> std::string_view {
-    static constexpr auto name = nameof::nameof_short_type<T>();
-    static constexpr auto str = [] {
-      return std::array{std::string_view{"Stanza IQ Error: "}, std::string_view{name}, std::string_view{"\0", 1}} | std::views::join;
-    };
-    static constexpr auto array = str() | std::ranges::to<utils::RangeToWrapper<std::array<char, std::ranges::distance(str())>>>();
-    return {array.data(), array.size() - 1};
-  }();
-
-  std::optional<std::string> by{};
-  std::string type;
-
-  // TODO(unknown): Add "optional text children" support for stanza error. Check  "XML Stanzas" -> "Syntax" for more details
-  static constexpr auto TryParse(xmlpp::Element* element) -> std::optional<T> {
-    if(not element) {
-      return std::nullopt;
-    }
-
-    auto by = element->get_attribute("by");
-    auto type = element->get_attribute("type");
-    if(not type) {
-      return std::nullopt;
-    }
-
-    auto node = element->get_first_child(kKebabCaseName);
-    if(not node) {
-      return std::nullopt;
-    }
-
-    T obj;
-    obj.type = type->get_value();
-    if(by) {
-      obj.by = std::optional{by->get_value()};
-    }
-    return obj;
-  }
-  static constexpr auto Parse(xmlpp::Element* element) -> T {
-    return TryParse(element).value();
-  }
-  friend constexpr auto operator<<(xmlpp::Element* element, const T& obj) -> void {
-    element->set_attribute("type", obj.type);
-    if(obj.by) {
-      element->set_attribute("by", *obj.by);
-    }
-
-    auto node = element->add_child_element(kKebabCaseName);
-    node->set_namespace_declaration(kDefaultNamespace);
-  }
-  constexpr auto operator==(const IqErrorImpl<T>&) const -> bool {
-    return true;
-  };
-  [[nodiscard]] constexpr auto what() const noexcept -> const char* override {
-    return kErrorMessage.data();
-  }
-};
-
-// Helper class to prevent parsing response stream into an expected return type if its name is an 'error'
-struct UnknownIqError : IqBaseError {
-  static constexpr auto kDefaultName = "stream:error";
-  static constexpr std::string_view kErrorMessage = "Unknown XMPP stream error";
-
-  static constexpr auto TryParse(xmlpp::Element* element) {
-    return std::optional{UnknownIqError{}};
-  }
-  static constexpr auto Parse(xmlpp::Element* element) {
-    return TryParse(element).value();
-  }
-  friend constexpr auto operator<<(xmlpp::Element* element, const UnknownIqError& obj) -> void {
-    throw std::format("'{}' must never be written into the real stream!", kErrorMessage);
-  }
-  constexpr auto operator==(const UnknownIqError&) const -> bool {
-    return true;
-  };
-  [[nodiscard]] constexpr auto what() const noexcept -> const char* override {
-    return kErrorMessage.data();
-  }
-};
-
-struct BadRequest : IqErrorImpl<BadRequest> {};
-struct Conflict : IqErrorImpl<Conflict> {};
-struct FeatureNotImplemented : IqErrorImpl<FeatureNotImplemented> {};
-struct Forbidden : IqErrorImpl<Forbidden> {};
-struct Gone : IqErrorImpl<Gone> {};
-struct InternalServerError : IqErrorImpl<InternalServerError> {};
-struct ItemNotFound : IqErrorImpl<ItemNotFound> {};
-struct JidMalformed : IqErrorImpl<JidMalformed> {};
-struct NotAcceptable : IqErrorImpl<NotAcceptable> {};
-struct NotAllowed : IqErrorImpl<NotAllowed> {};
-struct NotAuthorized : IqErrorImpl<NotAuthorized> {};
-struct PolicyViolation : IqErrorImpl<PolicyViolation> {};
-struct RecipientUnavailable : IqErrorImpl<RecipientUnavailable> {};
-struct Redirect : IqErrorImpl<Redirect> {};
-struct RegistrationRequired : IqErrorImpl<RegistrationRequired> {};
-struct RemoteServerNotFound : IqErrorImpl<RemoteServerNotFound> {};
-struct RemoteServerTimeout : IqErrorImpl<RemoteServerTimeout> {};
-struct ResourceConstraint : IqErrorImpl<ResourceConstraint> {};
-struct ServiceUnavailable : IqErrorImpl<ServiceUnavailable> {};
-struct SubscriptionRequired : IqErrorImpl<SubscriptionRequired> {};
-struct UndefinedCondition : IqErrorImpl<UndefinedCondition> {};
-struct UnexpectedRequest : IqErrorImpl<UnexpectedRequest> {};
-
-}  // namespace impl
-
-using IqError = std::variant<impl::BadRequest,
-                             impl::Conflict,
-                             impl::FeatureNotImplemented,
-                             impl::Forbidden,
-                             impl::Gone,
-                             impl::InternalServerError,
-                             impl::ItemNotFound,
-                             impl::JidMalformed,
-                             impl::NotAcceptable,
-                             impl::NotAllowed,
-                             impl::NotAuthorized,
-                             impl::PolicyViolation,
-                             impl::RecipientUnavailable,
-                             impl::Redirect,
-                             impl::RegistrationRequired,
-                             impl::RemoteServerNotFound,
-                             impl::RemoteServerTimeout,
-                             impl::ResourceConstraint,
-                             impl::ServiceUnavailable,
-                             impl::SubscriptionRequired,
-                             impl::UndefinedCondition,
-                             impl::UnexpectedRequest,
-                             impl::UnknownIqError>;
-
-static_assert(!std::is_same_v<typename std::variant_alternative_t<std::variant_size_v<IqError> - 1, IqError>, IqError>,
-              "'UnknownIqError' must be at the end of 'IqError' variant");
-
-}  // namespace larra::xmpp::iq::error

library/include/larra/stanza_error.hpp

@@ -0,0 +1,148 @@
+#pragma once
+#include <libxml++/libxml++.h>
+
+#include <larra/utils.hpp>
+#include <optional>
+#include <variant>
+
+namespace larra::xmpp::stanza::error {
+
+struct StanzaBaseError : std::exception {};
+
+// DO NOT MOVE TO ANOTHER NAMESPACE(where no heirs). VIA friend A FUNCTION IS ADDED THAT VIA ADL WILL BE SEARCHED FOR HEIRS
+// C++20 modules very unstable in clangd :(
+template <typename T>
+struct StanzaErrorImpl : StanzaBaseError {
+  static constexpr auto kDefaultName = "error";
+  static constexpr auto kDefaultNamespace = "urn:ietf:params:xml:ns:xmpp-stanzas";
+  static inline const auto kKebabCaseName = static_cast<std::string>(utils::ToKebabCaseName<T>());
+
+  static constexpr auto kErrorMessage = [] -> std::string_view {
+    static constexpr auto name = nameof::nameof_short_type<T>();
+    static constexpr auto str = [] {
+      return std::array{std::string_view{"Stanza IQ Error: "}, std::string_view{name}, std::string_view{"\0", 1}} | std::views::join;
+    };
+    static constexpr auto array = str() | std::ranges::to<utils::RangeToWrapper<std::array<char, std::ranges::distance(str())>>>();
+    return {array.data(), array.size() - 1};
+  }();
+
+  std::optional<std::string> by{};
+  std::string type;
+
+  // TODO(unknown): Add "optional text children" support for stanza error. Check  "XML Stanzas" -> "Syntax" for more details
+  static constexpr auto TryParse(xmlpp::Element* element) -> std::optional<T> {
+    if(not element) {
+      return std::nullopt;
+    }
+
+    auto by = element->get_attribute("by");
+    auto type = element->get_attribute("type");
+    if(not type) {
+      return std::nullopt;
+    }
+
+    auto node = element->get_first_child(kKebabCaseName);
+    if(not node) {
+      return std::nullopt;
+    }
+
+    T obj;
+    obj.type = type->get_value();
+    if(by) {
+      obj.by = std::optional{by->get_value()};
+    }
+    return obj;
+  }
+  static constexpr auto Parse(xmlpp::Element* element) -> T {
+    return TryParse(element).value();
+  }
+  friend constexpr auto operator<<(xmlpp::Element* element, const T& obj) -> void {
+    element->set_attribute("type", obj.type);
+    if(obj.by) {
+      element->set_attribute("by", *obj.by);
+    }
+
+    auto node = element->add_child_element(kKebabCaseName);
+    node->set_namespace_declaration(kDefaultNamespace);
+  }
+  constexpr auto operator==(const StanzaErrorImpl<T>&) const -> bool {
+    return true;
+  };
+  [[nodiscard]] constexpr auto what() const noexcept -> const char* override {
+    return kErrorMessage.data();
+  }
+};
+
+// Helper class to prevent parsing response stream into an expected return type if its name is an 'error'
+struct UnknownStanzaError : StanzaBaseError {
+  static constexpr auto kDefaultName = "stream:error";
+  static constexpr std::string_view kErrorMessage = "Unknown XMPP stream error";
+
+  static constexpr auto TryParse(xmlpp::Element* element) {
+    return std::optional{UnknownStanzaError{}};
+  }
+  static constexpr auto Parse(xmlpp::Element* element) {
+    return TryParse(element).value();
+  }
+  friend constexpr auto operator<<(xmlpp::Element* element, const UnknownStanzaError& obj) -> void {
+    throw std::runtime_error{std::format("'{}' must never be written into the real stream!", kErrorMessage)};
+  }
+  constexpr auto operator==(const UnknownStanzaError&) const -> bool {
+    return true;
+  };
+  [[nodiscard]] constexpr auto what() const noexcept -> const char* override {
+    return kErrorMessage.data();
+  }
+};
+
+struct BadRequest : StanzaErrorImpl<BadRequest> {};
+struct Conflict : StanzaErrorImpl<Conflict> {};
+struct FeatureNotImplemented : StanzaErrorImpl<FeatureNotImplemented> {};
+struct Forbidden : StanzaErrorImpl<Forbidden> {};
+struct Gone : StanzaErrorImpl<Gone> {};
+struct InternalServerError : StanzaErrorImpl<InternalServerError> {};
+struct ItemNotFound : StanzaErrorImpl<ItemNotFound> {};
+struct JidMalformed : StanzaErrorImpl<JidMalformed> {};
+struct NotAcceptable : StanzaErrorImpl<NotAcceptable> {};
+struct NotAllowed : StanzaErrorImpl<NotAllowed> {};
+struct NotAuthorized : StanzaErrorImpl<NotAuthorized> {};
+struct PolicyViolation : StanzaErrorImpl<PolicyViolation> {};
+struct RecipientUnavailable : StanzaErrorImpl<RecipientUnavailable> {};
+struct Redirect : StanzaErrorImpl<Redirect> {};
+struct RegistrationRequired : StanzaErrorImpl<RegistrationRequired> {};
+struct RemoteServerNotFound : StanzaErrorImpl<RemoteServerNotFound> {};
+struct RemoteServerTimeout : StanzaErrorImpl<RemoteServerTimeout> {};
+struct ResourceConstraint : StanzaErrorImpl<ResourceConstraint> {};
+struct ServiceUnavailable : StanzaErrorImpl<ServiceUnavailable> {};
+struct SubscriptionRequired : StanzaErrorImpl<SubscriptionRequired> {};
+struct UndefinedCondition : StanzaErrorImpl<UndefinedCondition> {};
+struct UnexpectedRequest : StanzaErrorImpl<UnexpectedRequest> {};
+
+using StanzaError = std::variant<BadRequest,
+                                 Conflict,
+                                 FeatureNotImplemented,
+                                 Forbidden,
+                                 Gone,
+                                 InternalServerError,
+                                 ItemNotFound,
+                                 JidMalformed,
+                                 NotAcceptable,
+                                 NotAllowed,
+                                 NotAuthorized,
+                                 PolicyViolation,
+                                 RecipientUnavailable,
+                                 Redirect,
+                                 RegistrationRequired,
+                                 RemoteServerNotFound,
+                                 RemoteServerTimeout,
+                                 ResourceConstraint,
+                                 ServiceUnavailable,
+                                 SubscriptionRequired,
+                                 UndefinedCondition,
+                                 UnexpectedRequest,
+                                 UnknownStanzaError>;
+
+static_assert(std::is_same_v<typename std::variant_alternative_t<std::variant_size_v<StanzaError> - 1, StanzaError>, UnknownStanzaError>,
+              "'UnknownStanzaError' must be at the end of 'StanzaError' variant");
+
+}  // namespace larra::xmpp::stanza::error

library/include/larra/stream_error.hpp

@@ -52,7 +52,7 @@ struct UnknownXmppError : BaseError {
     return TryParse(element).value();
   }
   friend constexpr auto operator<<(xmlpp::Element* element, const UnknownXmppError& obj) -> void {
-    throw std::format("'{}' must never be written into the real stream!", kErrorMessage);
+    throw std::runtime_error{std::format("'{}' must never be written into the real stream!", kErrorMessage)};
   }
   [[nodiscard]] constexpr auto what() const noexcept -> const char* override {
     return kErrorMessage.data();
@@ -112,7 +112,8 @@ using StreamError = std::variant<error::stream::BadFormat,
                                  error::stream::UnsupportedVersion,
                                  error::stream::UnknownXmppError>;
 
-static_assert(!std::is_same_v<typename std::variant_alternative_t<std::variant_size_v<StreamError> - 1, StreamError>, StreamError>,
-              "'UnknownXmppError' must be at the end of 'StreamError' variant");
+static_assert(
+    std::is_same_v<typename std::variant_alternative_t<std::variant_size_v<StreamError> - 1, StreamError>, error::stream::UnknownXmppError>,
+    "'UnknownXmppError' must be at the end of 'StreamError' variant");
 
 }  // namespace larra::xmpp

tests/iq.cpp

@@ -69,7 +69,7 @@ TEST(IQ, ParseForbiddenError) {
   ASSERT_TRUE(std::holds_alternative<IqError>(iqRes));
 
   auto errorRes = std::get<IqError>(iqRes);
-  ASSERT_TRUE(std::holds_alternative<iq::error::impl::Forbidden>(errorRes.payload));
+  ASSERT_TRUE(std::holds_alternative<stanza::error::Forbidden>(errorRes.payload));
 }
 
 TEST(IQ, IqErrThrowVisitorThrow) {
@@ -87,7 +87,7 @@ TEST(IQ, IqErrThrowVisitorThrow) {
   static constexpr auto throwErrMsg = "Stanza IQ Error: Forbidden";
   try {
     std::visit(utempl::Overloaded([](iq::Result<SomeStruct> r) {}, IqErrThrowVisitor<SomeStruct>{visitorErrMsg}), std::move(iqRes));
-  } catch(const iq::error::impl::IqBaseError& err) {
+  } catch(const stanza::error::StanzaBaseError& err) {
     ASSERT_STREQ(throwErrMsg, err.what());
     return;
   } catch(const std::runtime_error& err) {
@@ -114,7 +114,7 @@ TEST(IQ, IqErrThrowVisitorThrowGet) {
   static constexpr auto throwErrMsg = "Test Error: 'Get' is an invalid type for IQ result. Expected 'Result' or 'Error'";
   try {
     std::visit(utempl::Overloaded([](iq::Result<SomeStruct> r) {}, IqErrThrowVisitor<SomeStruct>{"Test Error"}), std::move(iqRes));
-  } catch(const iq::error::impl::IqBaseError& err) {
+  } catch(const stanza::error::StanzaBaseError& err) {
     ASSERT_TRUE(false) << "\tERROR: Invalid throw type throw";
   } catch(const std::runtime_error& err) {
     ASSERT_STREQ(throwErrMsg, err.what());
@@ -141,7 +141,7 @@ TEST(IQ, IqErrThrowVisitorThrowSet) {
   static constexpr auto throwErrMsg = "Test Error: 'Set' is an invalid type for IQ result. Expected 'Result' or 'Error'";
   try {
     std::visit(utempl::Overloaded([](iq::Result<SomeStruct> r) {}, IqErrThrowVisitor<SomeStruct>{"Test Error"}), std::move(iqRes));
-  } catch(const iq::error::impl::IqBaseError& err) {
+  } catch(const stanza::error::StanzaBaseError& err) {
     ASSERT_TRUE(false) << "\tERROR: Invalid throw type throw";
   } catch(const std::runtime_error& err) {
     ASSERT_STREQ(throwErrMsg, err.what());

tests/main.cpp

@@ -1,21 +1,60 @@
 #include <gtest/gtest.h>
 #include <spdlog/spdlog.h>
 
+#include <boost/program_options.hpp>
 #include <print>
-#include <utility>
+#include <stdexcept>
 
-class PreconfigureEnvironment : public ::testing::Environment {
- public:
-  void SetUp() override {
-    spdlog::set_level(spdlog::level::trace);
-    std::println("\nPreconfigureEnvironment setup:\n\tCompiled max availabel log level: {}\n\tCurrently set log level: {}",
-                 SPDLOG_ACTIVE_LEVEL,
-                 std::to_underlying(spdlog::get_level()));
+// clang-format off
+constexpr auto ToString(spdlog::level::level_enum e) {
+  switch (e) {
+    case spdlog::level::trace: return "TRACE";
+    case spdlog::level::debug: return "DEBUG";
+    case spdlog::level::info: return "INFO";
+    case spdlog::level::warn: return "WARNING";
+    case spdlog::level::err: return "ERROR";
+    case spdlog::level::critical: return "CRITICAL";
+    case spdlog::level::off: return "OFF";
+    default:
+      return "INVALID";
   }
-};
+}
+// clang-format on
+
+namespace po = boost::program_options;
 
 auto main(int argc, char** argv) -> int {
   ::testing::InitGoogleTest(&argc, argv);
-  ::testing::AddGlobalTestEnvironment(new PreconfigureEnvironment);  // NOLINT GTest takes ownership
+
+  // Define options
+  po::options_description desc("Allowed options");
+  desc.add_options()("help,h", "Print help message")("log_level,l",
+                                                     po::value<int>()->default_value(SPDLOG_LEVEL_INFO),
+                                                     "Set log level: 0=TRACE, 1=DEBUG, 2=INFO, 3=WARN, 4=ERROR, 5=CRITICAL, 6=OFF");
+
+  // Parse command-line arguments
+  po::variables_map vm;
+  try {
+    po::store(po::parse_command_line(argc, argv, desc), vm);
+    po::notify(vm);
+
+    if(vm["log_level"].as<int>() < spdlog::level::level_enum::trace || vm["log_level"].as<int>() > spdlog::level::level_enum::off) {
+      throw std::invalid_argument{
+          std::format("Invalid argument value for '--log_level' option. Check option description for more details")};
+    }
+    if(vm["log_level"].as<int>() < SPDLOG_ACTIVE_LEVEL) {
+      SPDLOG_WARN("Specified log_level '{}' is lower than max available one '{}'. Log level will be changed according to the maximum one",
+                  vm["log_level"].as<int>(),
+                  SPDLOG_ACTIVE_LEVEL);
+    }
+  } catch(const po::error& e) {
+    SPDLOG_CRITICAL("Cmd parse error: {}", e.what());
+    return 1;
+  }
+
+  // Cmd options handling
+  spdlog::set_level(static_cast<spdlog::level::level_enum>(vm["log_level"].as<int>()));
+  std::println("\nEnvironment setup:\n\tCurrently set log level: {}\n", ToString(spdlog::get_level()));
+
   return RUN_ALL_TESTS();
 }