diff --git a/.github/workflows/pythonapp.yml b/.github/workflows/pythonapp.yml
index 703124f3..87e052db 100644
--- a/.github/workflows/pythonapp.yml
+++ b/.github/workflows/pythonapp.yml
@@ -39,4 +39,4 @@ jobs:
         run: |
           mypy
       - name: Run demo.py
-        run: python demo.py
+        run: pytest --cov -v demo.py
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 84cc769a..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-language: python
-
-python:
-  - "3.6"
-
-# command to install dependencies
-install: pip install -r requirements.txt
-
-# command to run tests
-script: python demo.py
-
-branches:
-  only:
-    - master
diff --git a/demo.py b/demo.py
index 320c61e4..6dc55f31 100644
--- a/demo.py
+++ b/demo.py
@@ -22,10 +22,13 @@
     # 'verify': False,       # PAPI use https, an easy way is disable requests SSL verify
 }
 
+aapi = AppPixivAPI(**_REQUESTS_KWARGS)
+aapi.auth(refresh_token=_REFRESH_TOKEN)
+
 # AppAPI start
 
 
-def appapi_illust(aapi):
+def test_appapi_illust():
     json_result = aapi.illust_detail(59580629)
     print(json_result)
     illust = json_result.illust
@@ -41,7 +44,7 @@ def appapi_illust(aapi):
     # print(">>> frames=%d %s" % (len(metadata.frames), metadata.zip_urls.medium))
 
 
-def appapi_recommend(aapi):
+def test_appapi_recommend():
     json_result = aapi.illust_recommended(bookmark_illust_ids=[59580629])
     print(json_result)
     illust = json_result.illusts[0]
@@ -69,7 +72,7 @@ def appapi_recommend(aapi):
         print("  > %s, origin url: %s" % (illust.title, illust.image_urls["large"]))
 
 
-def appapi_users(aapi):
+def test_appapi_users():
     json_result = aapi.user_detail(275527)
     print(json_result)
     user = json_result.user
@@ -115,7 +118,7 @@ def appapi_users(aapi):
     print(json_result)
 
 
-def appapi_search(aapi):
+def test_appapi_search():
     first_tag = None
     response = aapi.trending_tags_illust()
     for trend_tag in response.trend_tags[:10]:
@@ -154,7 +157,7 @@ def appapi_search(aapi):
         print(">>> %s, origin url: %s" % (novel.title, novel.image_urls["large"]))
 
 
-def appapi_user_search(aapi):
+def test_appapi_user_search():
     json_result = aapi.illust_ranking("day_male")
     name = json_result.illusts[0].user.name
     print(">>> %s" % name)
@@ -173,7 +176,7 @@ def appapi_user_search(aapi):
         print(">>> %s, origin url: %s" % (illust.title, illust.image_urls["large"]))
 
 
-def appapi_ranking(aapi):
+def test_appapi_ranking():
     json_result = aapi.illust_ranking("day_male")
     print(json_result)
     illust = json_result.illusts[0]
@@ -194,7 +197,7 @@ def appapi_ranking(aapi):
     print(">>> %s, origin url: %s" % (illust.title, illust.image_urls["large"]))
 
 
-def appapi_auth_api(aapi):
+def test_appapi_auth_api():
     json_result = aapi.illust_follow(req_auth=True)
     print(json_result)
     illust = json_result.illusts[0]
@@ -214,7 +217,7 @@ def appapi_auth_api(aapi):
     print(">>> %s, origin url: %s" % (illust.title, illust.image_urls["large"]))
 
 
-def appapi_bookmark_add(aapi):
+def test_appapi_bookmark_add():
     illust_id = 74187223
     tags = ["Fate/GO", "50000users入り", "私服"]
     json_result = aapi.illust_bookmark_add(illust_id, tags=tags)
@@ -229,7 +232,7 @@ def appapi_bookmark_add(aapi):
     )
 
 
-def appapi_novel(aapi):
+def test_appapi_novel():
     json_result = aapi.user_novels(59216290)
     print(json_result)
     novel = json_result.novels[0]
@@ -280,23 +283,13 @@ def appapi_novel(aapi):
     print(">>> %s, novel_text: %s" % (novel.title, json_result.novel_text))
 
 
-def main():
-    # app-api
-    aapi = AppPixivAPI(**_REQUESTS_KWARGS)
-
-    aapi.auth(refresh_token=_REFRESH_TOKEN)
-
-    appapi_illust(aapi)
-    appapi_recommend(aapi)
-    appapi_users(aapi)
-    appapi_search(aapi)
-    appapi_user_search(aapi)
-    appapi_ranking(aapi)
-    appapi_bookmark_add(aapi)
-    appapi_novel(aapi)
-
-    appapi_auth_api(aapi)
-
-
 if __name__ == "__main__":
-    main()
+    test_appapi_illust()
+    test_appapi_recommend()
+    test_appapi_users()
+    test_appapi_search()
+    test_appapi_user_search()
+    test_appapi_ranking()
+    test_appapi_bookmark_add()
+    test_appapi_novel()
+    test_appapi_auth_api()
diff --git a/requirements.development.txt b/requirements.development.txt
index d14dfbc4..f4582c84 100644
--- a/requirements.development.txt
+++ b/requirements.development.txt
@@ -2,6 +2,8 @@ setuptools>=59.6.0
 mypy>=0.931
 flake8>=4.0.1
 types-requests>=2.27.10
+pytest>=7.0.1
+pytest-cov>=3.0.0
 flake8-black>=0.3.0
 black[jupyter]>=22.1.0
 isort>=5.10.1
diff --git a/setup.cfg b/setup.cfg
index 4ee1ec9c..9602a84c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -36,6 +36,8 @@ dev =
     mypy>=0.931
     flake8>=4.0.1
     types-requests>=2.27.10
+    pytest>=7.0.1
+    pytest-cov>=3.0.0
     flake8-black>=0.3.0
     black[jupyter]>=22.1.0
     isort>=5.10.1