diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 4471c71..251359d 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -23,4 +23,8 @@ jobs:
 
       - name: Check rule format with pytest
         run: |
-          pytest -v -s ./test/check_rule_format.py
+          pytest -v -s -m github ./test/check_rule_format.py
+
+      - name: Unit test with pytest
+        run: |
+          pytest -v -s -m github ./test/
diff --git a/custom_components/xiaomi_home/miot/miot_ev.py b/custom_components/xiaomi_home/miot/miot_ev.py
index 5d3958e..be4e684 100644
--- a/custom_components/xiaomi_home/miot/miot_ev.py
+++ b/custom_components/xiaomi_home/miot/miot_ev.py
@@ -240,6 +240,9 @@ class MIoTEventLoop:
         if fd is None:
             raise MIoTEvError('invalid params')
 
+        if not self._poll_fd:
+            raise MIoTEvError('event loop not started')
+
         fd_key: str = str(id(fd))
         fd_handler = self._fd_handlers.get(fd_key, None)
 
diff --git a/test/.gitignore b/test/.gitignore
new file mode 100644
index 0000000..9b4cc3a
--- /dev/null
+++ b/test/.gitignore
@@ -0,0 +1,2 @@
+miot
+test_cache
\ No newline at end of file
diff --git a/test/check_rule_format.py b/test/check_rule_format.py
index ca05966..db2d829 100644
--- a/test/check_rule_format.py
+++ b/test/check_rule_format.py
@@ -3,6 +3,7 @@
 import json
 from os import listdir, path
 from typing import Optional
+import pytest
 
 SOURCE_DIR: str = path.dirname(path.abspath(__file__))
 
@@ -85,6 +86,7 @@ def bool_trans(d: dict) -> bool:
     return True
 
 
+@pytest.mark.github
 def test_bool_trans():
     data: dict = load_json_file(
         path.join(
@@ -94,6 +96,7 @@ def test_bool_trans():
     assert bool_trans(data)
 
 
+@pytest.mark.github
 def test_spec_filter():
     data: dict = load_json_file(
         path.join(
@@ -103,6 +106,7 @@ def test_spec_filter():
     assert spec_filter(data)
 
 
+@pytest.mark.github
 def test_multi_lang():
     data: dict = load_json_file(
         path.join(
@@ -112,6 +116,7 @@ def test_multi_lang():
     assert nested_3_dict_str_str(data)
 
 
+@pytest.mark.github
 def test_miot_i18n():
     i18n_path: str = path.join(
         SOURCE_DIR, '../custom_components/xiaomi_home/miot/i18n')
diff --git a/test/conftest.py b/test/conftest.py
new file mode 100644
index 0000000..c60e277
--- /dev/null
+++ b/test/conftest.py
@@ -0,0 +1,70 @@
+# -*- coding: utf-8 -*-
+"""Pytest fixtures."""
+import shutil
+import pytest
+from os import path, makedirs
+
+TEST_ROOT_PATH: str = path.dirname(path.abspath(__file__))
+
+
+@pytest.fixture(scope='session')
+def test_lang() -> str:
+    return 'zh-Hans'
+
+
+@pytest.fixture(scope='session')
+def test_root_path() -> str:
+    return TEST_ROOT_PATH
+
+
+@pytest.fixture(scope='session')
+def test_cache_path() -> str:
+    cache_path: str = path.join(TEST_ROOT_PATH, 'test_cache')
+    makedirs(cache_path, exist_ok=True)
+    return cache_path
+
+
+@pytest.fixture(scope='session', autouse=True)
+def load_py_file():
+    # Copy py file to test folder
+    file_list = [
+        'common.py',
+        'const.py',
+        'miot_cloud.py',
+        'miot_error.py',
+        'miot_ev.py',
+        'miot_i18n.py',
+        'miot_lan.py',
+        'miot_mdns.py',
+        'miot_network.py',
+        'miot_spec.py',
+        'miot_storage.py']
+    makedirs(path.join(TEST_ROOT_PATH, 'miot'), exist_ok=True)
+    for file_name in file_list:
+        shutil.copyfile(
+            path.join(
+                TEST_ROOT_PATH, '../custom_components/xiaomi_home/miot',
+                file_name),
+            path.join(TEST_ROOT_PATH, 'miot', file_name))
+    print('\nloaded test py file, %s' % file_list)
+    # Copy spec files to test folder
+    shutil.copytree(
+        src=path.join(
+            TEST_ROOT_PATH, '../custom_components/xiaomi_home/miot/specs'),
+        dst=path.join(TEST_ROOT_PATH, 'miot/specs'),
+        dirs_exist_ok=True)
+    print('\nloaded spec test folder, miot/specs')
+    # Copy i18n files to test folder
+    shutil.copytree(
+        src=path.join(
+            TEST_ROOT_PATH, '../custom_components/xiaomi_home/miot/i18n'),
+        dst=path.join(TEST_ROOT_PATH, 'miot/i18n'),
+        dirs_exist_ok=True)
+    print('\nloaded i18n test folder, miot/i18n')
+    yield
+    # shutil.rmtree(path.join(TEST_ROOT_PATH, 'miot'))
+    # print('\nremoved test file, %s', file_list)
+    # shutil.rmtree(path.join(TEST_ROOT_PATH, 'miot/specs'))
+    # print('\nremoved test folder, %s', 'miot/specs')
+    # shutil.rmtree(path.join(TEST_ROOT_PATH, 'miot/i18n'))
+    # print('\nremoved test folder, %s', 'miot/i18n')
diff --git a/test/pytest.ini b/test/pytest.ini
new file mode 100644
index 0000000..098fdc0
--- /dev/null
+++ b/test/pytest.ini
@@ -0,0 +1,3 @@
+[pytest]
+markers:
+    github: tests for github actions
\ No newline at end of file