Implement native WebRtcTest validation (#96)

tests/compat/Cargo.toml

@@ -20,6 +20,7 @@ libremetaverse-types = { path = "../../crates/libremetaverse-types" }
 libremetaverse-utilities = { path = "../../crates/libremetaverse-utilities" }
 libremetaverse-voice-vivox = { path = "../../crates/libremetaverse-voice-vivox" }
 libremetaverse-voice-webrtc = { path = "../../crates/libremetaverse-voice-webrtc" }
+serde_json = "1"
 tokio = { version = "1.47.1", features = ["io-util", "macros", "net", "rt-multi-thread", "time"] }
 
 [lints]

tests/compat/tests/webrtc_protocol_semantics.rs

@@ -0,0 +1,57 @@
+use libremetaverse::types::UUID;
+use libremetaverse_voice_webrtc::{
+    CloseRequest, Jsep, ProvisionRequest, SignalingComplete, SignalingCompleteRequest, VoiceSecret,
+    encode_pcm_48k_mono,
+};
+
+#[test]
+fn local_provision_matches_web_rtc_capability_wire_shape() {
+    let request = ProvisionRequest {
+        jsep: Jsep {
+            kind: "offer".into(),
+            sdp: "v=0\r\n".into(),
+        },
+        channel_type: "local".into(),
+        voice_server_type: "webrtc".into(),
+        parcel_local_id: Some(42),
+    };
+    let value = serde_json::to_value(request).unwrap();
+    assert_eq!(value["jsep"]["type"], "offer");
+    assert_eq!(value["parcel_local_id"], 42);
+    assert_eq!(value["channel_type"], "local");
+    assert_eq!(value["voice_server_type"], "webrtc");
+}
+
+#[test]
+fn completion_uses_singular_candidate_and_close_is_explicit() {
+    let session = UUID::new_with_string("11111111-2222-4333-8444-555555555555".into()).unwrap();
+    let completion = serde_json::to_value(SignalingCompleteRequest {
+        voice_server_type: "webrtc".into(),
+        viewer_session: session.to_string(),
+        candidate: SignalingComplete { completed: true },
+    })
+    .unwrap();
+    assert_eq!(completion["candidate"]["completed"], true);
+    assert!(completion.get("candidates").is_none());
+
+    let close = serde_json::to_value(CloseRequest {
+        logout: true,
+        voice_server_type: "webrtc".into(),
+        viewer_session: session.to_string(),
+        channel: None,
+        credentials: None,
+    })
+    .unwrap();
+    assert_eq!(close["logout"], true);
+}
+
+#[test]
+fn native_opus_frames_are_nonempty_and_credentials_are_redacted() {
+    let frames = encode_pcm_48k_mono(&vec![0_i16; 1_920]).unwrap();
+    assert_eq!(frames.len(), 2);
+    assert!(frames.iter().all(|frame| !frame.0.is_empty()));
+    assert_eq!(
+        format!("{:?}", VoiceSecret::new("capability-token").unwrap()),
+        "VoiceSecret(<redacted>)"
+    );
+}