test: increased cb test coverage

test/unit/agents/perception/transcription_agent/test_transcription_agent.py

@@ -120,3 +120,83 @@ def test_mlx_recognizer():
                     mlx_mock.transcribe.return_value = {"text": "Hi"}
                     res = rec.recognize_speech(np.zeros(10))
                     assert res == "Hi"
+
+
+@pytest.mark.asyncio
+async def test_transcription_loop_continues_after_error(mock_zmq_context):
+    mock_sub = MagicMock()
+    mock_sub.recv = AsyncMock()
+    mock_zmq_context.instance.return_value.socket.return_value = mock_sub
+
+    fake_audio = np.zeros(16000, dtype=np.float32).tobytes()
+
+    mock_sub.recv.side_effect = [
+        fake_audio,  # first iteration → recognizer fails
+        asyncio.CancelledError(),  # second iteration → stop loop
+    ]
+
+    with patch.object(SpeechRecognizer, "best_type") as mock_best:
+        mock_recognizer = MagicMock()
+        mock_recognizer.recognize_speech.side_effect = RuntimeError("fail")
+        mock_best.return_value = mock_recognizer
+
+        agent = TranscriptionAgent("tcp://in")
+        agent._running = True  # ← REQUIRED to enter the loop
+        agent.send = AsyncMock()  # should never be called
+        agent.add_behavior = AsyncMock()  # match other tests
+
+        await agent.setup()
+
+        try:
+            await agent._transcribing_loop()
+        except asyncio.CancelledError:
+            pass
+
+        # recognizer failed, so we should never send anything
+        agent.send.assert_not_called()
+
+        # recv must have been called twice (audio then CancelledError)
+        assert mock_sub.recv.call_count == 2
+
+
+@pytest.mark.asyncio
+async def test_transcription_continue_branch_when_empty(mock_zmq_context):
+    mock_sub = MagicMock()
+    mock_sub.recv = AsyncMock()
+    mock_zmq_context.instance.return_value.socket.return_value = mock_sub
+
+    # First recv → audio chunk
+    # Second recv → Cancel loop → stop iteration
+    fake_audio = np.zeros(16000, dtype=np.float32).tobytes()
+    mock_sub.recv.side_effect = [fake_audio, asyncio.CancelledError()]
+
+    with patch.object(SpeechRecognizer, "best_type") as mock_best:
+        mock_recognizer = MagicMock()
+        mock_recognizer.recognize_speech.return_value = ""  # <— triggers the continue branch
+        mock_best.return_value = mock_recognizer
+
+        agent = TranscriptionAgent("tcp://in")
+
+        # Make loop runnable
+        agent._running = True
+        agent.send = AsyncMock()
+        agent.add_behavior = AsyncMock()
+
+        await agent.setup()
+
+        # Execute loop manually
+        try:
+            await agent._transcribing_loop()
+        except asyncio.CancelledError:
+            pass
+
+        # → Because of "continue", NO sending should occur
+        agent.send.assert_not_called()
+
+        # → Continue was hit, so we must have read exactly 2 times:
+        #    - first audio
+        #    - second CancelledError
+        assert mock_sub.recv.call_count == 2
+
+        # → recognizer was called once (first iteration)
+        assert mock_recognizer.recognize_speech.call_count == 1