Refactor util.hpp and perf_tests.cpp:

- Introduce type aliases for `nlohmann::json` exceptions in `util.hpp` for improved readability.
- Update test cases in `perf_tests.cpp` to use the new aliases for exception handling consistency.

Author: allnes

modules/core/performance/tests/perf_tests.cpp

@@ -173,15 +173,15 @@ TEST_NOLINT(GetStringTaskTypeEdgeCases, ThrowsIfFileCannotBeOpened) {
 TEST_NOLINT(GetStringTaskTypeEdgeCases, ThrowsIfJsonIsMalformed) {
   std::string path = (std::filesystem::temp_directory_path() / "bad_json.json").string();
   std::ofstream(path) << "{ this is not valid json ";
-  EXPECT_THROW_NOLINT(GetStringTaskType(ppc::core::TypeOfTask::kSEQ, path), nlohmann::json::parse_error);
+  EXPECT_THROW_NOLINT(GetStringTaskType(ppc::core::TypeOfTask::kSEQ, path), NlohmannJsonParseError);
   std::filesystem::remove(path);
 }
 
 TEST_NOLINT(GetStringTaskTypeEdgeCases, ThrowsIfJsonValueIsNull) {
   std::string path = (std::filesystem::temp_directory_path() / "null_value.json").string();
   std::ofstream(path) << R"({"tasks": { "seq": null }})";
 
-  EXPECT_THROW_NOLINT(GetStringTaskType(ppc::core::TypeOfTask::kSEQ, path), nlohmann::json::type_error);
+  EXPECT_THROW_NOLINT(GetStringTaskType(ppc::core::TypeOfTask::kSEQ, path), NlohmannJsonTypeError);
 
   std::filesystem::remove(path);
 }

modules/core/util/include/util.hpp

@@ -13,6 +13,9 @@
 
 #include <nlohmann/json.hpp>  // NOLINT(misc-include-cleaner)
 
+using NlohmannJsonParseError = nlohmann::json::parse_error;
+using NlohmannJsonTypeError = nlohmann::json::type_error;
+
 #ifdef _MSC_VER
 #pragma warning(pop)
 #endif