ci: add workflow to run PyTest

.github/workflows/tests.yml

@@ -0,0 +1,34 @@
+# This file contains checks to run unit tests.
+#
+# Special thank you to pylint-dev project at GitHub where inspiration
+# was taken.
+name: unit tests
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+
+jobs:
+  tests-linux:
+    name: run / ${{ matrix.python-version }} / Linux
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.8", "3.9", "3.10"]
+    timeout-minutes: 25
+    steps:
+      - uses: actions/[email protected]
+      - name: Set up Python ${{ matrix.python-version }}
+        id: python
+        uses: actions/[email protected]
+        with:
+          python-version: ${{ matrix.python-version }}
+          check-latest: true
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install pytest
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+      - run: python -m pytest 

requirements.txt

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+psycopg2>=2.9.2