diff --git a/tests/test_sora_disconnect.py b/tests/test_sora_disconnect.py
index 84db707..05ae7d3 100644
--- a/tests/test_sora_disconnect.py
+++ b/tests/test_sora_disconnect.py
@@ -41,10 +41,9 @@ def test_websocket_signaling_only_disconnect_api(setup):
         assert conn.ws_close_code == 1000
         assert conn.ws_close_reason == "DISCONNECTED-API"
 
-        # C++ SDK 側でこのテストが通るようなコードが必要
-        # assert conn.disconnect_code == SoraSignalingErrorCode.CLOSE_SUCCEEDED
-        # assert conn.disconnect_reason is not None
-        # assert "DISCONNECTED-API" in conn.disconnect_reason
+        assert conn.disconnect_code == SoraSignalingErrorCode.CLOSE_SUCCEEDED
+        assert conn.disconnect_reason is not None
+        assert "DISCONNECTED-API" in conn.disconnect_reason
 
     # TODO: LIFETIME-EXPIRED のテスト
 
@@ -81,10 +80,9 @@ def test_websocket_datachannel_signaling_disconnect_api(setup):
         assert conn.ws_close_code == 1000
         assert conn.ws_close_reason == "DISCONNECTED-API"
 
-        # C++ SDK 側でこのテストが通るようなコードが必要
-        # assert conn.disconnect_code == SoraSignalingErrorCode.CLOSE_SUCCEEDED
-        # assert conn.disconnect_reason is not None
-        # assert "DISCONNECTED-API" in conn.disconnect_reason
+        assert conn.disconnect_code == SoraSignalingErrorCode.CLOSE_SUCCEEDED
+        assert conn.disconnect_reason is not None
+        assert "DISCONNECTED-API" in conn.disconnect_reason
 
     # TODO: LIFETIME-EXPIRED のテスト
 
diff --git a/tests/test_type_disconnect.py b/tests/test_type_disconnect.py
index 47fb920..48adabe 100644
--- a/tests/test_type_disconnect.py
+++ b/tests/test_type_disconnect.py
@@ -4,6 +4,8 @@
 
 from client import SoraClient, SoraRole
 
+from sora_sdk import SoraSignalingErrorCode
+
 
 def test_websocket_signaling_only_disconnect(setup):
     signaling_urls = setup.get("signaling_urls")
@@ -29,8 +31,10 @@ def test_websocket_signaling_only_disconnect(setup):
 
         conn.disconnect()
 
-        # error_code が 0 という意味
-        assert conn.disconnect_code == 0
+        assert conn.ws_close_code == 1000
+        assert conn.ws_close_reason == "TYPE-DISCONNECT"
+
+        assert conn.disconnect_code == SoraSignalingErrorCode.CLOSE_SUCCEEDED
         assert (
             conn.disconnect_reason == "Succeeded to close WebSocket (DC signaling is not enabled)"
         )
@@ -62,7 +66,10 @@ def test_hybrid_signaling_disconnect(setup):
 
         conn.disconnect()
 
-        assert conn.disconnect_code == 0
+        assert conn.ws_close_code == 1000
+        assert conn.ws_close_reason == "TYPE-DISCONNECT"
+
+        assert conn.disconnect_code == SoraSignalingErrorCode.CLOSE_SUCCEEDED
         assert conn.disconnect_reason == "Succeeded to close Websocket (DC signaling is enabled)"
 
 
@@ -94,6 +101,5 @@ def test_datachannel_only_type_disconnect(setup):
 
         conn.disconnect()
 
-        # error_code が 0 という意味
-        assert conn.disconnect_code == 0
+        assert conn.disconnect_code == SoraSignalingErrorCode.CLOSE_SUCCEEDED
         assert conn.disconnect_reason == "Succeeded to close DataChannel"