Fixed errors and improve roster tests

.vscode/launch.json

@@ -20,7 +20,7 @@
             "program": "${workspaceFolder}/build/larra_xmpp_tests",
             "args": [
                 // --gtest_filter=POSTIVE_PATTERNS[-NEGATIVE_PATTERNS]
-                "--gtest_filter=Roster*"
+                // "--gtest_filter=Roster*"
             ],
             "cwd": "${workspaceFolder}",
             "preLaunchTask": "GCC: Build"

tests/serialization.cpp

@@ -5,6 +5,9 @@
 #include <larra/serialization/auto.hpp>
 #include <larra/serialization/error.hpp>
 #include <larra/stream_error.hpp>
+#include <variant>
+
+#include "utempl/utils.hpp"
 
 using namespace std::literals;
 
@@ -31,7 +34,9 @@ TEST(Serialize, Variant) {
 }
 
 TEST(CheckFinalErrorPlace, Variant) {
-  ASSERT_EQ(std::variant_size<StreamError>::value, utempl::kTupleSize<StreamError>);
+  StreamError stream_error = error::stream::UnknownXmppError{};
+  EXPECT_NO_THROW(std::get<std::variant_size_v<StreamError> - 1>(stream_error))
+      << "'UnknownXmppError' must be at the end of 'StreamError' variant";
 }
 
 namespace tests::serialization {