test: added init failure test in audio sender

test/unit/test_audio_sender.py

@@ -1,6 +1,5 @@
 # coding=utf-8
 import os
-import time
 
 import mock
 import pytest
@@ -127,3 +126,22 @@ def test_break_microphone(mocker):
     sender.wait_until_done()
 
     send_socket.assert_not_called()
+
+
+def test_pyaudio_init_failure(mocker, zmq_context):
+    """
+    Tests the behavior when PyAudio initialization fails (raises an IOError).
+    """
+    # Prevent binding the ZMQ socket
+    mocker.patch("robot_interface.endpoints.audio_sender.AudioSender.create_socket")
+
+    # Simulate PyAudio() failing
+    mocker.patch(
+        "robot_interface.endpoints.audio_sender.pyaudio.PyAudio",
+        side_effect=IOError("boom")
+    )
+    
+    sender = AudioSender(zmq_context)
+
+    assert sender.audio is None
+    assert sender.microphone is None