Flesh out test

tests/shared.py

@@ -1,6 +1,64 @@
 """Shared code for Wyoming satellite tests."""
-from wyoming.audio import AudioChunk
+import asyncio
+import io
+from collections.abc import Iterable
+from typing import Optional
+
+from wyoming.audio import AudioChunk, AudioStart, AudioStop
+from wyoming.client import AsyncClient
+from wyoming.event import Event
+
+AUDIO_START = AudioStart(rate=16000, width=2, channels=1)
+AUDIO_STOP = AudioStop()
 
 AUDIO_CHUNK = AudioChunk(
     rate=16000, width=2, channels=1, audio=bytes([255] * 960)  # 30ms
 )
+
+
+class FakeStreamReaderWriter:
+    def __init__(self) -> None:
+        self._undrained_data = bytes()
+        self._value = bytes()
+        self._data_ready = asyncio.Event()
+
+    def write(self, data: bytes) -> None:
+        self._undrained_data += data
+
+    def writelines(self, data: Iterable[bytes]) -> None:
+        for line in data:
+            self.write(line)
+
+    async def drain(self) -> None:
+        self._value += self._undrained_data
+        self._undrained_data = bytes()
+        self._data_ready.set()
+        self._data_ready.clear()
+
+    async def readline(self) -> bytes:
+        while b"\n" not in self._value:
+            await self._data_ready.wait()
+
+        with io.BytesIO(self._value) as value_io:
+            data = value_io.readline()
+            self._value = self._value[len(data) :]
+            return data
+
+    async def readexactly(self, n: int) -> bytes:
+        while len(self._value) < n:
+            await self._data_ready.wait()
+
+        data = self._value[:n]
+        self._value = self._value[n:]
+        return data
+
+
+class MicClient(AsyncClient):
+    async def read_event(self) -> Optional[Event]:
+        # Send 30ms of audio every 30ms
+        await asyncio.sleep(AUDIO_CHUNK.seconds)
+        return AUDIO_CHUNK.event()
+
+    async def write_event(self, event: Event) -> None:
+        # Output only
+        pass