diff --git a/tests/test_u_async_comprehensive.c b/tests/test_u_async_comprehensive.c
index ff41faa..d3c3c10 100644
--- a/tests/test_u_async_comprehensive.c
+++ b/tests/test_u_async_comprehensive.c
@@ -16,6 +16,7 @@
 
 #include "u_async.h"
 #include "timeout_heap.h"
+#include "debug_config.h"
 
 /* Test statistics */
 static struct {
@@ -40,17 +41,17 @@ static struct {
 
 /* Test result tracking */
 #define TEST_START(name) do { \
-    printf("TEST: %s... ", name); \
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "TEST: %s... ", name); \
     test_stats.tests_run++; \
 } while(0)
 
 #define TEST_PASS() do { \
-    printf("PASS\n"); \
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "PASS"); \
     test_stats.tests_passed++; \
 } while(0)
 
 #define TEST_FAIL(msg) do { \
-    printf("FAIL: %s\n", msg); \
+    DEBUG_ERROR(DEBUG_CATEGORY_UASYNC, "FAIL: %s", msg); \
     test_stats.tests_failed++; \
 } while(0)
 
@@ -71,7 +72,7 @@ static struct {
 #define ASSERT_EQ(a, b, msg) do { \
     if ((a) != (b)) { \
         TEST_FAIL(msg); \
-        printf("  Expected: %ld, Got: %ld\n", (long)(b), (long)(a)); \
+        DEBUG_ERROR(DEBUG_CATEGORY_UASYNC, "  Expected: %ld, Got: %ld", (long)(b), (long)(a)); \
         return; \
     } \
 } while(0)
@@ -462,8 +463,12 @@ static void test_concurrent_operations(void) {
 
 /* Main test runner */
 int main(void) {
-    printf("=== lib Comprehensive Unit Tests ===\n");
-    printf("Testing race conditions, memory management, and error handling\n\n");
+    debug_config_init();
+    debug_set_level(DEBUG_LEVEL_INFO);
+    debug_set_categories(DEBUG_CATEGORY_ALL);
+    
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "=== lib Comprehensive Unit Tests ===");
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "Testing race conditions, memory management, and error handling");
     
     /* Run all tests */
     test_basic_timers();
@@ -475,19 +480,19 @@ int main(void) {
     test_concurrent_operations();
     
     /* Print statistics */
-    printf("\n=== Test Statistics ===\n");
-    printf("Tests run: %d\n", test_stats.tests_run);
-    printf("Tests passed: %d\n", test_stats.tests_passed);
-    printf("Tests failed: %d\n", test_stats.tests_failed);
-    printf("\nTimer callbacks: %d\n", test_stats.timer_callbacks);
-    printf("Timer cancellations: %d\n", test_stats.timer_cancellations);
-    printf("Immediate timeouts: %d\n", test_stats.immediate_timeouts);
-    printf("Socket events: %d\n", test_stats.socket_events);
-    printf("Race condition errors: %d\n", test_stats.race_condition_errors);
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "=== Test Statistics ===");
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "Tests run: %d", test_stats.tests_run);
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "Tests passed: %d", test_stats.tests_passed);
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "Tests failed: %d", test_stats.tests_failed);
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "Timer callbacks: %d", test_stats.timer_callbacks);
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "Timer cancellations: %d", test_stats.timer_cancellations);
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "Immediate timeouts: %d", test_stats.immediate_timeouts);
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "Socket events: %d", test_stats.socket_events);
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "Race condition errors: %d", test_stats.race_condition_errors);
     
     /* Memory leak detection */
-    printf("\n=== Memory Leak Detection ===\n");
-    printf("No memory leaks detected during testing\n");
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "=== Memory Leak Detection ===");
+    DEBUG_INFO(DEBUG_CATEGORY_UASYNC, "No memory leaks detected during testing");
     
     return (test_stats.tests_failed > 0) ? 1 : 0;
 }
\ No newline at end of file