Add extra section on CI/CD with github actions

Author: glentner

.github/workflows/tests.yml

@@ -0,0 +1,31 @@
+name: tests
+
+on:
+  push:
+    branches: [ master, develop ]
+  pull_request:
+    branches: [ develop ]
+
+jobs:
+  testing:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ['3.8', '3.9']
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install Project
+      run: |
+        python -m pip install --upgrade pip setuptools wheel pytest hypothesis
+        python -m pip install pipenv
+        pipenv install --deploy --system
+
+    - name: Run Tests
+      run: |
+        pytest -v

docs/source/tutorial/testing.rst

@@ -460,3 +460,68 @@ hard coding them.
         assert cumulative_product(array) == [0] * len(array)
 
 |
+
+CI / CD
+^^^^^^^
+
+The term CI/CD stands for "continuous integration / continuous deployment". The idea
+integrates `development` with software `operations` and can be a non-trivial topic
+to cover, let alone implement.
+This concept is equally applicable to the previous section on :ref:`packaging <packaging>`
+as well as the next section on :ref:`documentation <documentation>`. We'll include it here
+because it's a great idea to implement for automated testing.
+
+What would be great is if we could automate running our tests on all changes to the code.
+Not just locally, but using our version control system, so that contributions made to
+the code are automatically tested without us needing to pull down that branch and running
+the tests manually to see if everything is okay. We want a nice "green light" to give us
+the `all-clear` -- always.
+
+There are several services out there that will integrate with your version control hosting
+platform and automatically run a customizable workflow when events happen
+(e.g., on a `pull request` or a new `push` to the repository). If you're hosting your
+project on GitHub though, using the freely available
+`Github Actions <https://github.com/features/actions>`_ is a super simple way to provide this
+functionality for your Python project.
+
+We basically just need to include a configuration file in our project in a special location
+and GitHub will automatically understand what to do. Here is a really basic example to get
+started that will run ``pytest`` for us everytime we have new commits or PRs to the `develop`
+branch of our project using multiple versions of Python.
+
+.. code-block:: yaml
+    :caption: .github/workflows/tests.yml
+
+    name: tests
+
+    on:
+      push:
+        branches: [ master, develop ]
+      pull_request:
+        branches: [ develop ]
+
+    jobs:
+      testing:
+        runs-on: ubuntu-latest
+        strategy:
+          matrix:
+            python-version: ['3.8', '3.9']
+
+        steps:
+        - uses: actions/checkout@v2
+        - name: Set up Python ${{ matrix.python-version }}
+          uses: actions/setup-python@v2
+          with:
+            python-version: ${{ matrix.python-version }}
+
+        - name: Install Project
+          run: |
+            python -m pip install --upgrade pip setuptools wheel pytest hypothesis
+            python -m pip install pipenv
+            pipenv install --deploy --system
+
+        - name: Run Tests
+          run: |
+            pytest -v
+
+|