Add mocks to test microphone input

tests/voice/test_microphone.py

@@ -1,4 +1,5 @@
 import logging
+import re
 from typing import Any, Dict
 
 import pytest
@@ -16,28 +17,54 @@
 logger = logging.getLogger(__name__)
 
 
-def mock_query_devices(device: int) -> Dict[str, Any]:
-    assert device == 0
-    return {
-        "name": "<mock-device>",
-        "index": 0,
-        "hostapi": 0,
-        "max_input_channels": 1,
-        "max_output_channels": 0,
-        "default_low_input_latency": 0.0326984126984127,
-        "default_low_output_latency": 0.01,
-        "default_high_input_latency": 0.04285714285714286,
-        "default_high_output_latency": 0.1,
-        "default_samplerate": 44100.0,
-    }
-
-
 @pytest.mark.asyncio
 @pytest.mark.voice
 @pytest.mark.playback
 class TestMicrophone:
 
-    async def test_create_microphone(self, monkeypatch: pytest.MonkeyPatch) -> None:
+    async def test_create_microphone_basic(self, monkeypatch: pytest.MonkeyPatch) -> None:
+        # pylint: disable=unused-argument
+        def mock_query_devices(device: int = -1) -> Dict[str, Any]:
+            return {
+                "name": "<mock-device>",
+                "index": 0,
+                "hostapi": 0,
+                "max_input_channels": 1,
+                "max_output_channels": 0,
+                "default_low_input_latency": 0.0326984126984127,
+                "default_low_output_latency": 0.01,
+                "default_high_input_latency": 0.04285714285714286,
+                "default_high_output_latency": 0.1,
+                "default_samplerate": 44100.0,
+            }
+
         monkeypatch.setattr(sounddevice, "query_devices", mock_query_devices)
         with Microphone.context(device=0):
             pass
+
+    async def test_create_microphone_zero_channels(self, monkeypatch: pytest.MonkeyPatch) -> None:
+        match = (
+            "Selected input device does not have any input channels. \n"
+            "Please set MicrophoneInterface(device=<YOUR DEVICE ID>). \n"
+            "Devices:"
+        )
+
+        with pytest.raises(OSError, match=re.escape(match)):
+            # pylint: disable=unused-argument
+            def mock_query_devices(device: int = -1) -> Dict[str, Any]:
+                return {
+                    "name": "<mock-device>",
+                    "index": 0,
+                    "hostapi": 0,
+                    "max_input_channels": 0,
+                    "max_output_channels": 0,
+                    "default_low_input_latency": 0.0326984126984127,
+                    "default_low_output_latency": 0.01,
+                    "default_high_input_latency": 0.04285714285714286,
+                    "default_high_output_latency": 0.1,
+                    "default_samplerate": 44100.0,
+                }
+
+            monkeypatch.setattr(sounddevice, "query_devices", mock_query_devices)
+            with Microphone.context(device=0):
+                pass