add test workflow

Author: GreatBahram

.github/workflows/tests.yml

@@ -0,0 +1,38 @@
+name: Tests
+
+on:
+  pull_request:
+    branches: '*'
+
+  workflow_dispatch:
+    inputs:
+      branch:
+        description: 'The branch, tag or SHA to release from'
+        required: true
+        default: 'master'
+
+jobs:
+  tests:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        python: [3.6, 3.7, 3.8, 3.9]
+        os: [ubuntu-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.inputs.branch }}
+      - name: Use Python ${{ matrix.python }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python }}
+
+      - name: Install test dependencies
+        run: python -m pip install pytest
+
+      - name: Install current version of the clamd package
+        run: python -m pip install -e .
+
+      - name: Run unit tests
+        run: pytest