Taking into account review: ignore, asserts, pytest.fixture

Signed-off-by: Akram Ben Aissi <akram.benaissi@gmail.com>

llama_stack/providers/remote/inference/vllm/vllm.py

@@ -304,11 +304,10 @@ class VLLMInferenceAdapter(OpenAIMixin, LiteLLMOpenAIMixin, Inference, ModelsPro
     get_api_key = LiteLLMOpenAIMixin.get_api_key
 
     def get_base_url(self) -> str:
-        """Get the base URL, falling back to the api_base from LiteLLMOpenAIMixin or config."""
+        """Get the base URL from config."""
-        url = self.api_base or self.config.url
+        if not self.config.url:
-        if not url:
             raise ValueError("No base URL configured")
-        return url
+        return self.config.url
 
     async def initialize(self) -> None:
         if not self.config.url:
@@ -317,10 +316,7 @@ class VLLMInferenceAdapter(OpenAIMixin, LiteLLMOpenAIMixin, Inference, ModelsPro
             )
 
     async def should_refresh_models(self) -> bool:
-        # Get the default value from the field definition
+        # Strictly respecting the refresh_models directive
-        default_api_token = self.config.__class__.model_fields["api_token"].default
-        if not self.config.api_token or self.config.api_token == default_api_token:
-            return False
         return self.config.refresh_models
 
     async def list_models(self) -> list[Model] | None:
@@ -373,7 +369,7 @@ class VLLMInferenceAdapter(OpenAIMixin, LiteLLMOpenAIMixin, Inference, ModelsPro
     def get_extra_client_params(self):
         return {"http_client": httpx.AsyncClient(verify=self.config.tls_verify)}
 
-    async def completion(  # type: ignore[override]
+    async def completion(  # type: ignore[override]  # Return type more specific than base class  which is allows for both streaming and non-streaming responses.
         self,
         model_id: str,
         content: InterleavedContent,
@@ -485,7 +481,8 @@ class VLLMInferenceAdapter(OpenAIMixin, LiteLLMOpenAIMixin, Inference, ModelsPro
             yield chunk
 
     async def _nonstream_completion(self, request: CompletionRequest) -> CompletionResponse:
-        assert self.client is not None
+        if self.client is None:
+            raise RuntimeError("Client is not initialized")
         params = await self._get_params(request)
         r = await self.client.completions.create(**params)
         return process_completion_response(r)
@@ -493,7 +490,8 @@ class VLLMInferenceAdapter(OpenAIMixin, LiteLLMOpenAIMixin, Inference, ModelsPro
     async def _stream_completion(
         self, request: CompletionRequest
     ) -> AsyncGenerator[CompletionResponseStreamChunk, None]:
-        assert self.client is not None
+        if self.client is None:
+            raise RuntimeError("Client is not initialized")
         params = await self._get_params(request)
 
         stream = await self.client.completions.create(**params)

tests/unit/providers/inference/test_remote_vllm.py

@@ -680,46 +680,42 @@ async def test_openai_chat_completion_is_async(vllm_inference_adapter):
 
 async def test_should_refresh_models():
     """
-    Test the should_refresh_models method with different api_token configurations.
+    Test the should_refresh_models method with different refresh_models configurations.
 
     This test verifies that:
-    1. When api_token is None or empty, should_refresh_models returns False
+    1. When refresh_models is True, should_refresh_models returns True regardless of api_token
-    2. When api_token is "fake" (default), should_refresh_models returns False
+    2. When refresh_models is False, should_refresh_models returns False regardless of api_token
-    3. When api_token is a real token and refresh_models is True, should_refresh_models returns True
-    4. When api_token is a real token and refresh_models is False, should_refresh_models returns False
     """
 
-    # Test case 1: api_token is None, refresh_models is True
+    # Test case 1: refresh_models is True, api_token is None
     config1 = VLLMInferenceAdapterConfig(url="http://test.localhost", api_token=None, refresh_models=True)
     adapter1 = VLLMInferenceAdapter(config1)
     result1 = await adapter1.should_refresh_models()
-    assert result1 is False, "should_refresh_models should return False when api_token is None"
+    assert result1 is True, "should_refresh_models should return True when refresh_models is True"
 
-    # Test case 2: api_token is empty string, refresh_models is True
+    # Test case 2: refresh_models is True, api_token is empty string
     config2 = VLLMInferenceAdapterConfig(url="http://test.localhost", api_token="", refresh_models=True)
     adapter2 = VLLMInferenceAdapter(config2)
     result2 = await adapter2.should_refresh_models()
-    assert result2 is False, "should_refresh_models should return False when api_token is empty"
+    assert result2 is True, "should_refresh_models should return True when refresh_models is True"
 
-    # Test case 3: api_token is "fake" (default), refresh_models is True
+    # Test case 3: refresh_models is True, api_token is "fake" (default)
     config3 = VLLMInferenceAdapterConfig(url="http://test.localhost", api_token="fake", refresh_models=True)
     adapter3 = VLLMInferenceAdapter(config3)
     result3 = await adapter3.should_refresh_models()
-    assert result3 is False, "should_refresh_models should return False when api_token is 'fake'"
+    assert result3 is True, "should_refresh_models should return True when refresh_models is True"
 
-    # Test case 4: api_token is real token, refresh_models is True
+    # Test case 4: refresh_models is True, api_token is real token
     config4 = VLLMInferenceAdapterConfig(url="http://test.localhost", api_token="real-token-123", refresh_models=True)
     adapter4 = VLLMInferenceAdapter(config4)
     result4 = await adapter4.should_refresh_models()
-    assert result4 is True, "should_refresh_models should return True when api_token is real and refresh_models is True"
+    assert result4 is True, "should_refresh_models should return True when refresh_models is True"
 
-    # Test case 5: api_token is real token, refresh_models is False
+    # Test case 5: refresh_models is False, api_token is real token
     config5 = VLLMInferenceAdapterConfig(url="http://test.localhost", api_token="real-token-456", refresh_models=False)
     adapter5 = VLLMInferenceAdapter(config5)
     result5 = await adapter5.should_refresh_models()
-    assert result5 is False, (
+    assert result5 is False, "should_refresh_models should return False when refresh_models is False"
-        "should_refresh_models should return False when api_token is real but refresh_models is False"
-    )
 
 
 async def test_provider_data_var_context_propagation(vllm_inference_adapter):