[本机音频 Transport]：完成真实设备检查和sounddevice输入输出，包含device-check、RawInputStream和播放错误恢复

tests/test_transport.py

@@ -65,6 +65,82 @@ class TransportTests(unittest.TestCase):
         self.assertIsInstance(health.input_available, bool)
         self.assertIsInstance(health.output_available, bool)
 
+    def test_sounddevice_transport_reads_from_raw_input_stream(self) -> None:
+        fake = FakeSoundDevice()
+        transport = SoundDeviceAudioTransport(sounddevice_module=fake)
+        transport.start_input(sample_rate=16000, channels=1)
+        frames = transport.read_frames(10)
+        transport.stop()
+
+        self.assertEqual(len(frames), 1)
+        self.assertEqual(frames[0].pcm, b"\x01\x00\x02\x00")
+        self.assertEqual(frames[0].sample_rate, 16000)
+
+    def test_sounddevice_transport_plays_pcm_to_raw_output_stream(self) -> None:
+        fake = FakeSoundDevice()
+        transport = SoundDeviceAudioTransport(sounddevice_module=fake)
+        result = transport.play_pcm(AudioSegment(b"\x00\x00\x01\x00", 16000, 1, 0, 20))
+
+        self.assertTrue(result.played)
+        self.assertEqual(fake.output_writes, [b"\x00\x00\x01\x00"])
+
+    def test_sounddevice_device_report_uses_query_devices(self) -> None:
+        fake = FakeSoundDevice()
+        report = SoundDeviceAudioTransport(sounddevice_module=fake).device_report()
+
+        self.assertTrue(report["ok"])
+        self.assertEqual(len(report["devices"]), 2)
+
+
+class FakeInputStream:
+    def __init__(self, callback, **kwargs) -> None:
+        self.callback = callback
+        self.kwargs = kwargs
+        self.started = False
+        self.closed = False
+
+    def start(self) -> None:
+        self.started = True
+        self.callback(b"\x01\x00\x02\x00", 2, None, "")
+
+    def stop(self) -> None:
+        self.started = False
+
+    def close(self) -> None:
+        self.closed = True
+
+
+class FakeOutputStream:
+    def __init__(self, owner, **kwargs) -> None:
+        self.owner = owner
+        self.kwargs = kwargs
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *args) -> None:
+        return None
+
+    def write(self, data: bytes) -> None:
+        self.owner.output_writes.append(bytes(data))
+
+
+class FakeSoundDevice:
+    def __init__(self) -> None:
+        self.output_writes: list[bytes] = []
+
+    def RawInputStream(self, **kwargs):
+        return FakeInputStream(**kwargs)
+
+    def RawOutputStream(self, **kwargs):
+        return FakeOutputStream(self, **kwargs)
+
+    def query_devices(self):
+        return [
+            {"name": "Mic", "max_input_channels": 1, "max_output_channels": 0, "default_samplerate": 16000},
+            {"name": "Speaker", "max_input_channels": 0, "max_output_channels": 2, "default_samplerate": 48000},
+        ]
+
 
 if __name__ == "__main__":
     unittest.main()