chore: import upstream snapshot with attribution

tests/voice/test_openai_model_provider.py

@@ -0,0 +1,29 @@
+# Tests for the OpenAI voice model provider (OpenAIVoiceModelProvider).
+
+import openai
+import pytest
+
+from agents.exceptions import UserError
+from agents.voice.models.openai_model_provider import OpenAIVoiceModelProvider
+
+
+@pytest.mark.parametrize(
+    "conflicting_kwargs",
+    [
+        {"api_key": "other_key"},
+        {"base_url": "https://example.com"},
+        {"api_key": "other_key", "base_url": "https://example.com"},
+    ],
+)
+def test_voice_provider_rejects_client_with_conflicting_args(conflicting_kwargs):
+    # Regression test for #3808: this validation used a bare `assert`, which is
+    # stripped under `python -O`, silently ignoring the conflicting arguments.
+    client = openai.AsyncOpenAI(api_key="test_key")
+    with pytest.raises(UserError, match="Don't provide"):
+        OpenAIVoiceModelProvider(openai_client=client, **conflicting_kwargs)
+
+
+def test_voice_provider_accepts_client_without_conflicting_args():
+    client = openai.AsyncOpenAI(api_key="test_key")
+    provider = OpenAIVoiceModelProvider(openai_client=client)
+    assert provider._get_client() is client