diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ce8013f..323fe68 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,6 +10,11 @@ on:
 
 jobs:
   build:
+    env:
+      OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
+      OPENAI_API_BASE_URL: ${{ secrets.OPENAI_API_BASE_URL }}
+      OPENAI_API_BASE: ${{ secrets.OPENAI_API_BASE }}
+      OPENAI_API_MODEL: ${{ secrets.OPENAI_API_MODEL }}
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
@@ -28,9 +33,6 @@ jobs:
         python -m pip install .[test]
         python -m pip install -r requirements_dev.txt
     - name: Test with pytest and coverage
-      env:
-        OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
-        OPENAI_API_BASE_URL: ${{ secrets.OPENAI_API_BASE_URL }}
       run: |
         pip install coverage
         coverage run -m pytest tests/
diff --git a/chattool/__init__.py b/chattool/__init__.py
index 6431442..a543156 100644
--- a/chattool/__init__.py
+++ b/chattool/__init__.py
@@ -2,7 +2,7 @@
 
 __author__ = """Rex Wang"""
 __email__ = '1073853456@qq.com'
-__version__ = '3.1.6'
+__version__ = '3.1.7'
 
 import os, sys, requests
 from .chattype import Chat, Resp
diff --git a/chattool/chattype.py b/chattool/chattype.py
index f1e9332..aa5aa83 100644
--- a/chattool/chattype.py
+++ b/chattool/chattype.py
@@ -46,11 +46,11 @@ def __init__( self
             self._chat_log = msg.copy() # avoid changing the original list
         else:
             raise ValueError("msg should be a list of dict, a string or None")
-        self.api_key = api_key or chattool.api_key
+        self.api_key = api_key or chattool.api_key or ''
+        self.model = model or chattool.model or ''
         # chat_url > api_base > base_url > chattool.api_base > chattool.base_url
         self.api_base = api_base or chattool.api_base
         self.base_url = base_url or chattool.base_url
-        self.model = model or chattool.model or "gpt-3.5-turbo"
         if chat_url:
             self.chat_url = chat_url
         elif api_base:
diff --git a/setup.py b/setup.py
index 46297b0..3bdfc3c 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
 with open('README.md') as readme_file:
     readme = readme_file.read()
 
-VERSION = '3.1.6'
+VERSION = '3.1.7'
 
 requirements = [
     'Click>=7.0', 'requests>=2.20', "responses>=0.23", 'aiohttp>=3.8',
diff --git a/tests/test_async.py b/tests/test_async.py
index c71f94b..210cd0a 100644
--- a/tests/test_async.py
+++ b/tests/test_async.py
@@ -23,7 +23,8 @@ def test_apikey():
     assert chattool.api_key.startswith("sk-")
 
 def test_base_url():
-    assert chattool.base_url.startswith("http")
+    assert not chattool.api_base or chattool.api_base.startswith("http")
+    assert not chattool.base_url or chattool.base_url.startswith('http')
 
 def test_stream():
     chat = Chat("hello")
diff --git a/tests/test_envs.py b/tests/test_envs.py
index 94d52e5..8a5a290 100644
--- a/tests/test_envs.py
+++ b/tests/test_envs.py
@@ -4,6 +4,17 @@
 from chattool import Chat, save_envs, load_envs
 testpath = 'tests/testfiles/'
 
+def test_model_api_key():
+    api_key, model = chattool.api_key, chattool.model
+    chattool.api_key, chattool.model = None, None
+    chat = Chat()
+    assert chat.api_key == ''
+    assert chat.model == ''
+    chattool.api_key, chattool.model = api_key, model
+    chat = Chat(api_key="sk-123", model="gpt-3.5-turbo")
+    assert chat.api_key == "sk-123"
+    assert chat.model == "gpt-3.5-turbo"
+
 def test_apibase():
     api_base, base_url = chattool.api_base, chattool.base_url
     chattool.api_base, chattool.base_url = None, None
diff --git a/tests/test_function.py b/tests/test_function.py
index fb69e37..cdf88da 100644
--- a/tests/test_function.py
+++ b/tests/test_function.py
@@ -127,7 +127,7 @@ def test_mock_resp():
 def test_use_exec_function():
     chat = Chat("find the result of sqrt(121314)")
     chat.setfuncs([exec_python_code])
-    chat.autoresponse(max_tries=2)
+    chat.autoresponse(max_tries=2, display=True)
     
 def test_find_permutation_group():
     pass