improved unit tests / add a run_test function to test processors

tests/skipped/test_openai_tts.py

@@ -0,0 +1,37 @@
+import asyncio
+import unittest
+
+import openai
+import pyaudio
+from dotenv import load_dotenv
+
+from pipecat.frames.frames import AudioRawFrame, ErrorFrame
+from pipecat.services.openai import OpenAITTSService
+
+load_dotenv()
+
+
+class TestWhisperOpenAIService(unittest.IsolatedAsyncioTestCase):
+    @unittest.skip("FIXME: This test is failing")
+    async def test_whisper_tts(self):
+        pa = pyaudio.PyAudio()
+        stream = pa.open(format=pyaudio.paInt16, channels=1, rate=24_000, output=True)
+
+        tts = OpenAITTSService(voice="nova")
+
+        async for frame in tts.run_tts("Hello, there. Nice to meet you, seems to work well"):
+            self.assertIsInstance(frame, AudioRawFrame)
+            stream.write(frame.audio)
+
+        await asyncio.sleep(0.5)
+        stream.stop_stream()
+        pa.terminate()
+
+        tts = OpenAITTSService(voice="invalid_voice")
+        with self.assertRaises(openai.BadRequestError):
+            async for frame in tts.run_tts("wont work"):
+                self.assertIsInstance(frame, ErrorFrame)
+
+
+if __name__ == "__main__":
+    unittest.main()