Adding pytest and tests GitHubAction

.github/workflows/tests.yaml

@@ -0,0 +1,21 @@
+name: Run tests
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      run: |
+        python -m pip install -U pip
+        python -m pip install -r dev-requirements.txt
+    - name: Test
+      run: make test