Update workflow

.github/workflows/python-app.yml

@@ -1,7 +1,7 @@
 # This workflow will install Python dependencies, run tests and lint with a single version of Python
 # For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
 
-name: Python application
+name: Tests and QA
 
 on:
   push:
@@ -13,29 +13,57 @@ permissions:
   contents: read
 
 jobs:
-  build:
-
-    runs-on: ubuntu-latest
+  test:
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        python-version: [ '3.8', '3.9', '3.10', '3.11' ]
 
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python 3.10
-      uses: actions/setup-python@v3
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
       with:
-        python-version: "3.10"
+        python-version: ${{ matrix.python-version }}
+
     - name: Install Poetry
       uses: snok/install-poetry@v1
+
     - name: Install dependencies
+      run: poetry install --no-interaction --with dev
+
+    - name: Run linters
       run: |
-        poetry install
+        poetry run black --check .
+
     - name: Build contracts
       run: |
         bash tests/build_contracts.sh
+
     - name: Test with pytest
       run: |
-        poetry run pytest --cov-report xml:coverage.xml
-    - name: Upload coverage.xml
-      uses: orgoro/[email protected]
-      with:
-          coverageFile: coverage.xml
-          token: ${{ secrets.GITHUB_TOKEN }}
+        poetry run coverage run -m pytest
+        # add further tests with `poetry run coverage run -a ...`
+
+    - name: Upload coverage data to coveralls.io
+      run: poetry run coveralls
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        COVERALLS_FLAG_NAME: ${{ matrix.python-version }}
+        COVERALLS_PARALLEL: true
+
+
+  coveralls:
+      name: Indicate completion to coveralls.io
+      needs: test
+      runs-on: ubuntu-latest
+      container: python:3-slim
+      steps:
+      - name: Install coveralls
+        run: pip3 install --upgrade coveralls
+      - name: Finished
+        run: coveralls --finish
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}