Add tests for gpt4all llm (#852)

embedchain/factory.py

@@ -50,6 +50,7 @@ class EmbedderFactory:
     provider_to_config_class = {
         "azure_openai": "embedchain.config.embedder.base.BaseEmbedderConfig",
         "openai": "embedchain.config.embedder.base.BaseEmbedderConfig",
+        "gpt4all": "embedchain.config.embedder.base.BaseEmbedderConfig",
     }
 
     @classmethod

embedchain/llm/gpt4all.py

@@ -15,7 +15,7 @@ class GPT4ALLLlm(BaseLlm):
         if self.config.model is None:
             self.config.model = "orca-mini-3b.ggmlv3.q4_0.bin"
         self.instance = GPT4ALLLlm._get_instance(self.config.model)
-        self.instance.streaming = config.stream
+        self.instance.streaming = self.config.stream
 
     def get_llm_model_answer(self, prompt):
         return self._get_answer(prompt=prompt, config=self.config)