diff --git a/rtc-ice/src/candidate/mod.rs b/rtc-ice/src/candidate/mod.rs
index 231b7d30..62f2d7b4 100644
--- a/rtc-ice/src/candidate/mod.rs
+++ b/rtc-ice/src/candidate/mod.rs
@@ -3,11 +3,11 @@ mod candidate_pair_test;
 #[cfg(test)]
 mod candidate_test;
 
-//TODO: #[cfg(test)]
-//TODO: mod candidate_relay_test;
-/*TODO: #[cfg(test)]
-TODO: mod candidate_server_reflexive_test;
-*/
+// candidate_relay_test and candidate_server_reflexive_test use turn::auth / turn::server /
+// turn::relay APIs from a different TURN library than rtc-turn. Enabling them requires porting
+// to the rtc-turn API — deferred to a dedicated porting effort.
+// #[cfg(test)] mod candidate_relay_test;
+// #[cfg(test)] mod candidate_server_reflexive_test;
 
 pub mod candidate_host;
 pub mod candidate_pair;
diff --git a/rtc/src/peer_connection/configuration/media_engine.rs b/rtc/src/peer_connection/configuration/media_engine.rs
index 381046c7..2f52d1da 100644
--- a/rtc/src/peer_connection/configuration/media_engine.rs
+++ b/rtc/src/peer_connection/configuration/media_engine.rs
@@ -77,8 +77,8 @@
 //! # }
 //! ```
 
-//TODO:#[cfg(test)]
-//mod media_engine_test;
+// media_engine_test.rs does not exist — it was never created for this sans-IO crate.
+// #[cfg(test)] mod media_engine_test;
 
 use crate::peer_connection::sdp::{
     codecs_from_media_description, rtp_extensions_from_media_description,
diff --git a/rtc/src/peer_connection/configuration/mod.rs b/rtc/src/peer_connection/configuration/mod.rs
index cef0dd67..0346932b 100644
--- a/rtc/src/peer_connection/configuration/mod.rs
+++ b/rtc/src/peer_connection/configuration/mod.rs
@@ -749,41 +749,7 @@ mod test {
         }
     }
 
-    /*TODO:#[test] fn test_configuration_json() {
-
-         let j = r#"
-            {
-                "iceServers": [{"URLs": ["turn:turn.example.org"],
-                                "username": "jch",
-                                "credential": "topsecret"
-                              }],
-                "iceTransportPolicy": "relay",
-                "bundlePolicy": "balanced",
-                "rtcpMuxPolicy": "require"
-            }"#;
-
-        conf := Configuration{
-            ICEServers: []ICEServer{
-                {
-                    URLs:       []string{"turn:turn.example.org"},
-                    Username:   "jch",
-                    Credential: "topsecret",
-                },
-            },
-            ICETransportPolicy: ICETransportPolicyRelay,
-            BundlePolicy:       BundlePolicyBalanced,
-            RTCPMuxPolicy:      RTCPMuxPolicyRequire,
-        }
-
-        var conf2 Configuration
-        assert.NoError(t, json.Unmarshal([]byte(j), &conf2))
-        assert.Equal(t, conf, conf2)
-
-        j2, err := json.Marshal(conf2)
-        assert.NoError(t, err)
-
-        var conf3 Configuration
-        assert.NoError(t, json.Unmarshal(j2, &conf3))
-        assert.Equal(t, conf2, conf3)
-    }*/
+    // test_configuration_json was Go code that was never ported to Rust.
+    // A Rust equivalent would deserialize RTCConfiguration from JSON and round-trip it.
+    // This can be added as a proper #[test] if JSON serialization is a desired feature.
 }
diff --git a/rtc/src/peer_connection/sdp/mod.rs b/rtc/src/peer_connection/sdp/mod.rs
index 7ee23f1d..548d472b 100644
--- a/rtc/src/peer_connection/sdp/mod.rs
+++ b/rtc/src/peer_connection/sdp/mod.rs
@@ -144,8 +144,9 @@
 //! [RFC 8829]: https://datatracker.ietf.org/doc/html/rfc8829
 //! [W3C WebRTC Specification]: https://w3c.github.io/webrtc-pc/#session-description-model
 
-//TODO: #[cfg(test)]
-//TODO: mod sdp_test;
+// sdp_test.rs imports crate::api::APIBuilder which belongs to the old async API and does not
+// exist in this sans-IO crate. Enabling it requires porting the test file to the new API.
+// #[cfg(test)] mod sdp_test;
 
 pub(crate) mod sdp_type;
 pub(crate) mod session_description;