abstracts and fakes

src/text_generation/services/language_models/abstract_language_model_response_service.py

@@ -0,0 +1,7 @@
+import abc
+
+
+class AbstractLanguageModelResponseService(abc.ABC):
+    @abc.abstractmethod
+    def invoke(self, user_prompt: str) -> str:
+        raise NotImplementedError

src/text_generation/services/language_models/fake_language_model_response_service.py

@@ -0,0 +1,11 @@
+from src.text_generation.services.language_models.abstract_language_model_response_service import AbstractLanguageModelResponseService
+
+
+class FakeLanguageModelResponseService(AbstractLanguageModelResponseService):
+    
+    def invoke(self, user_prompt: str) -> str:
+
+        if not user_prompt:
+            raise ValueError(f"Parameter 'user_prompt' cannot be empty or None")
+        
+        return "fake language model response"