Add test workflow (#1)

.github/workflows/test.yml

@@ -0,0 +1,26 @@
+name: Test pipeline
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ['3.7', '3.8', '3.9', '3.10']
+    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 dependencies
+      run: |
+        pip install poetry
+        poetry install --with test
+    - name: Run tests
+      run: |
+        source $(poetry env info -p)/bin/activate
+        pytest