Using an assertion on the duration will cause the test to fail if the timeout is exceeded, making the failure explicit and the test's intent clearer.

Co-authored-by: sourcery-ai[bot] <58596630+sourcery-ai[bot]@users.noreply.github.com>

Author: WenyinWei

test/integration/test_modernized_interface.cpp

@@ -368,10 +368,7 @@ class ModernizedInterfaceTest {
         auto end_time = std::chrono::high_resolution_clock::now();
 
         auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end_time - start_time);
-        if (duration.count() > 2000) {  // 2-second timeout
-            std::cout << "     Signal-aware integration took too long: " << duration.count() << "ms" << std::endl;
-            return false;
-        }
+        ASSERT_LE(duration.count(), 2000) << "Signal-aware integration took too long: " << duration.count() << "ms";
 
         std::cout << "     Signal-aware integration result: [" << state[0] << ", " << state[1] << "]" << std::endl;