diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
new file mode 100644
index 0000000..8e511b3
--- /dev/null
+++ b/.github/workflows/python-app.yml
@@ -0,0 +1,40 @@
+# This workflow will install Python dependencies, run tests and lint with a single version of Python
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
+
+name: Python application
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python 3.10
+      uses: actions/setup-python@v3
+      with:
+        python-version: "3.10"
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install flake8 pytest
+        pip install -r requirements.txt
+        pip install -e .
+    - name: Lint with flake8
+      run: |
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+    - name: Test with pytest
+      run: |
+        pytest
diff --git a/.gitignore b/.gitignore
index f41ad96..2453233 100644
--- a/.gitignore
+++ b/.gitignore
@@ -130,3 +130,8 @@ dmypy.json
 
 # Project specific
 configurable_http_proxy/version.txt
+/.idea/configurable-http-proxy.iml
+/.idea/inspectionProfiles/profiles_settings.xml
+/.idea/misc.xml
+/.idea/modules.xml
+/.idea/vcs.xml
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..26d3352
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/configurable_http_proxy_test/test_proxy.py b/configurable_http_proxy_test/test_proxy.py
index f0985ac..b78f7ce 100644
--- a/configurable_http_proxy_test/test_proxy.py
+++ b/configurable_http_proxy_test/test_proxy.py
@@ -32,7 +32,7 @@ async def get(self, path=None):
         }
         self.set_status(200)
         self.set_header("Content-Type", "application/json")
-        if self.get_argument("with_set_cookie"):
+        if self.get_argument("with_set_cookie", None):
             # Values that set-cookie can take:
             # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
             values = {