dependent on pytest-hhtpserver

Author: rohe

.github/workflows/python-app.yml

@@ -42,6 +42,7 @@ jobs:
         python setup.py test
         pip install flake8
         pip install pytest
+        pip install pytest-httpserver
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names