diff --git a/metagpt/provider/fireworks_api.py b/metagpt/provider/fireworks_api.py
index 09581a2f3..8c0b268e6 100644
--- a/metagpt/provider/fireworks_api.py
+++ b/metagpt/provider/fireworks_api.py
@@ -78,7 +78,7 @@ class FireworksLLM(OpenAILLM):
         self.cost_manager = FireworksCostManager()
 
     def _make_client_kwargs(self) -> dict:
-        kwargs = dict(api_key=self.config.fireworks_api_key, base_url=self.config.fireworks_api_base)
+        kwargs = dict(api_key=self.config.api_key, base_url=self.config.base_url)
         return kwargs
 
     def _update_costs(self, usage: CompletionUsage):
diff --git a/metagpt/utils/yaml_model.py b/metagpt/utils/yaml_model.py
index 162866609..60f866f7e 100644
--- a/metagpt/utils/yaml_model.py
+++ b/metagpt/utils/yaml_model.py
@@ -17,6 +17,8 @@ class YamlModel(BaseModel):
 
     @classmethod
     def read_yaml(cls, file_path: Path) -> Dict:
+        if not file_path.exists():
+            return {}
         with open(file_path, "r") as file:
             return yaml.safe_load(file)
 
diff --git a/tests/metagpt/provider/mock_llm_config.py b/tests/metagpt/provider/mock_llm_config.py
new file mode 100644
index 000000000..969ec2ab6
--- /dev/null
+++ b/tests/metagpt/provider/mock_llm_config.py
@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+@Time    : 2024/1/8 17:03
+@Author  : alexanderwu
+@File    : mock_llm_config.py
+"""
+
+from metagpt.configs.llm_config import LLMConfig
+
+mock_llm_config = LLMConfig(
+    llm_type="mock",
+    api_key="mock_api_key",
+)
diff --git a/tests/metagpt/provider/test_anthropic_api.py b/tests/metagpt/provider/test_anthropic_api.py
index 4410717a9..6962ab064 100644
--- a/tests/metagpt/provider/test_anthropic_api.py
+++ b/tests/metagpt/provider/test_anthropic_api.py
@@ -6,10 +6,8 @@
 import pytest
 from anthropic.resources.completions import Completion
 
-from metagpt.config import CONFIG
 from metagpt.provider.anthropic_api import Claude2
-
-CONFIG.anthropic_api_key = "xxx"
+from tests.metagpt.provider.mock_llm_config import mock_llm_config
 
 prompt = "who are you"
 resp = "I'am Claude2"
@@ -25,10 +23,10 @@ async def mock_anthropic_acompletions_create(self, model: str, prompt: str, max_
 
 def test_claude2_ask(mocker):
     mocker.patch("anthropic.resources.completions.Completions.create", mock_anthropic_completions_create)
-    assert resp == Claude2().ask(prompt)
+    assert resp == Claude2(mock_llm_config).ask(prompt)
 
 
 @pytest.mark.asyncio
 async def test_claude2_aask(mocker):
     mocker.patch("anthropic.resources.completions.AsyncCompletions.create", mock_anthropic_acompletions_create)
-    assert resp == await Claude2().aask(prompt)
+    assert resp == await Claude2(mock_llm_config).aask(prompt)
diff --git a/tests/metagpt/provider/test_azure_openai_api.py b/tests/metagpt/provider/test_azure_llm.py
similarity index 100%
rename from tests/metagpt/provider/test_azure_openai_api.py
rename to tests/metagpt/provider/test_azure_llm.py
diff --git a/tests/metagpt/provider/test_base_gpt_api.py b/tests/metagpt/provider/test_base_llm.py
similarity index 100%
rename from tests/metagpt/provider/test_base_gpt_api.py
rename to tests/metagpt/provider/test_base_llm.py
diff --git a/tests/metagpt/provider/test_fireworks_api.py b/tests/metagpt/provider/test_fireworks_api.py
index d48686eaa..66b55e5b2 100644
--- a/tests/metagpt/provider/test_fireworks_api.py
+++ b/tests/metagpt/provider/test_fireworks_api.py
@@ -13,17 +13,13 @@ from openai.types.chat.chat_completion_chunk import Choice as AChoice
 from openai.types.chat.chat_completion_chunk import ChoiceDelta
 from openai.types.completion_usage import CompletionUsage
 
-from metagpt.config import CONFIG
 from metagpt.provider.fireworks_api import (
     MODEL_GRADE_TOKEN_COSTS,
     FireworksCostManager,
     FireworksLLM,
 )
 from metagpt.utils.cost_manager import Costs
-
-CONFIG.fireworks_api_key = "xxx"
-CONFIG.max_budget = 10
-CONFIG.calc_usage = True
+from tests.metagpt.provider.mock_llm_config import mock_llm_config
 
 resp_content = "I'm fireworks"
 default_resp = ChatCompletion(
@@ -92,7 +88,7 @@ async def mock_openai_acompletions_create(self, stream: bool = False, **kwargs)
 async def test_fireworks_acompletion(mocker):
     mocker.patch("openai.resources.chat.completions.AsyncCompletions.create", mock_openai_acompletions_create)
 
-    fireworks_gpt = FireworksLLM()
+    fireworks_gpt = FireworksLLM(mock_llm_config)
     fireworks_gpt.model = "llama-v2-13b-chat"
 
     fireworks_gpt._update_costs(