Fix audio test by patching torchcodec version retrieval

Author: sergioburdisso

src/sdialog/audio/tts/qwen3/tts.py

@@ -3,6 +3,7 @@
 # SPDX-License-Identifier: MIT
 import torch
 import numpy as np
+from typing import Optional
 
 from qwen_tts import Qwen3TTSModel
 from ..base import BaseTTS, BaseVoiceCloneTTS
@@ -76,7 +77,7 @@ def __init__(
 
     def generate(self,
                  text: str,
-                 speaker_voice: str | object = None,
+                 speaker_voice: Optional[object] = None,
                  tts_pipeline_kwargs: dict = {}) -> tuple[np.ndarray, int]:
         """
         Generates audio from text using the Hugging Face TTS pipeline.

tests/conftest.py

@@ -111,5 +111,19 @@ def get_samples_played_in_range(self, *_args, **_kwargs):
     sys.modules["torchcodec"] = torchcodec_module
     sys.modules["torchcodec.decoders"] = decoders_module
 
+    # transformers.audio_utils (and others) call importlib.metadata.version("torchcodec")
+    # at module level.  That call bypasses sys.modules and reads on-disk dist-info, so
+    # it raises PackageNotFoundError even though our stub is in sys.modules, causing a
+    # cascade failure across ALL tests.  Patch it to return a harmless version string.
+    import importlib.metadata as _imeta
+    _real_version = _imeta.version
+
+    def _patched_version(name: str) -> str:
+        if name == "torchcodec":
+            return "0.0.0"
+        return _real_version(name)
+
+    _imeta.version = _patched_version
+
 
 _install_torchcodec_stub()