Add test github action

.github/workflows/test.yml

@@ -0,0 +1,47 @@
+name: test
+
+'on': [push, pull_request, workflow_dispatch]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.6, 3.7, 3.8, 3.9]
+        django-version:
+          - 'Django~=2.2.0'
+          - 'Django~=3.1.0'
+          - 'Django~=3.2.0'
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+        with:
+          virtualenvs-create: true
+          virtualenvs-in-project: true
+          installer-parallel: true
+
+      - name: Set up cache
+        uses: actions/cache@v1
+        with:
+          path: .venv
+          key: venv-${{ matrix.python-version }}-${{ hashFiles('poetry.lock') }}
+
+      - name: Install dependencies
+        run: |
+          poetry install
+          poetry run pip install -U pip
+          poetry run pip install -U "${{ matrix.django-version }}"
+
+      - name: Run tests
+        run: |
+          poetry run pytest
+          poetry check
+          poetry run pip check