refactor: extract RunAllTests function for reusability (learning-process#503)

Author: allnes

modules/core/runners/src/runners.cpp

@@ -60,6 +60,17 @@ void WorkerTestFailurePrinter::PrintProcessRank() {
   std::cerr << std::format(" [  PROCESS {}  ] ", rank);
 }
 
+namespace {
+int RunAllTests() {
+  auto status = RUN_ALL_TESTS();
+  if (ppc::util::DestructorFailureFlag::Get()) {
+    throw std::runtime_error(
+        std::format("[  ERROR  ] Destructor failed with code {}", ppc::util::DestructorFailureFlag::Get()));
+  }
+  return status;
+}
+}  // namespace
+
 int Init(int argc, char** argv) {
   const int init_res = MPI_Init(&argc, &argv);
   if (init_res != MPI_SUCCESS) {
@@ -81,12 +92,8 @@ int Init(int argc, char** argv) {
     listeners.Append(new ppc::core::WorkerTestFailurePrinter(std::shared_ptr<::testing::TestEventListener>(listener)));
   }
   listeners.Append(new ppc::core::UnreadMessagesDetector());
-  auto status = RUN_ALL_TESTS();
 
-  if (ppc::util::DestructorFailureFlag::Get()) {
-    throw std::runtime_error(
-        std::format("[  ERROR  ] Destructor failed with code {}", ppc::util::DestructorFailureFlag::Get()));
-  }
+  auto status = RunAllTests();
 
   const int finalize_res = MPI_Finalize();
   if (finalize_res != MPI_SUCCESS) {
@@ -102,12 +109,7 @@ int SimpleInit(int argc, char** argv) {
   tbb::global_control control(tbb::global_control::max_allowed_parallelism, ppc::util::GetNumThreads());
 
   testing::InitGoogleTest(&argc, argv);
-  auto status = RUN_ALL_TESTS();
-  if (ppc::util::DestructorFailureFlag::Get()) {
-    throw std::runtime_error(
-        std::format("[  ERROR  ] Destructor failed with code {}", ppc::util::DestructorFailureFlag::Get()));
-  }
-  return status;
+  return RunAllTests();
 }
 
 }  // namespace ppc::core