Add tests for the Outlines model

Author: RobinPicard

tests/conftest.py

@@ -544,6 +544,18 @@ def model(
                 'Qwen/Qwen2.5-72B-Instruct',
                 provider=HuggingFaceProvider(provider_name='nebius', api_key=huggingface_api_key),
             )
+        elif request.param == 'outlines':
+            from outlines.models.transformers import from_transformers
+            from transformers import AutoModelForCausalLM, AutoTokenizer
+
+            from pydantic_ai.models.outlines import OutlinesModel
+
+            return OutlinesModel(
+                from_transformers(
+                    AutoModelForCausalLM.from_pretrained('erwanf/gpt2-mini'),
+                    AutoTokenizer.from_pretrained('erwanf/gpt2-mini'),
+                )
+            )
         else:
             raise ValueError(f'Unknown model: {request.param}')
     except ImportError: