diff --git a/tests/bench_timeout_heap b/tests/bench_timeout_heap
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diff --git a/tests/bench_uasync_timeouts b/tests/bench_uasync_timeouts
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diff --git a/tests/test_config_debug b/tests/test_config_debug
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diff --git a/tests/test_crypto b/tests/test_crypto
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diff --git a/tests/test_debug_categories b/tests/test_debug_categories
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diff --git a/tests/test_ecc_encrypt b/tests/test_ecc_encrypt
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diff --git a/tests/test_etcp_100_packets b/tests/test_etcp_100_packets
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index 00000000..aa685a14
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diff --git a/tests/test_etcp_crypto b/tests/test_etcp_crypto
new file mode 100755
index 00000000..b1557609
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diff --git a/tests/test_etcp_minimal b/tests/test_etcp_minimal
new file mode 100755
index 00000000..2a0cd31f
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diff --git a/tests/test_etcp_simple_traffic b/tests/test_etcp_simple_traffic
new file mode 100755
index 00000000..69835f67
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diff --git a/tests/test_etcp_simple_traffic.c b/tests/test_etcp_simple_traffic.c
index 10582cfe..9e99ba61 100644
--- a/tests/test_etcp_simple_traffic.c
+++ b/tests/test_etcp_simple_traffic.c
@@ -294,7 +294,7 @@ int main() {
     }
 
     // Initialize connections and register sockets regardless of TUN state
-    if (server_instance->tun.fd < 0) {
+    if (!server_instance->tun) {
         printf("ℹ️  Server TUN disabled - initializing connections only\n");
     }
 
@@ -323,7 +323,7 @@ int main() {
     }
     
     // Initialize connections and register sockets regardless of TUN state
-    if (client_instance->tun.fd < 0) {
+    if (!client_instance->tun) {
         printf("ℹ️  Client TUN disabled - initializing connections only\n");
     }
     
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