Try using tox-gh-actions and GH actions version matrix

Author: necaris

.github/workflows/tests.yaml

@@ -5,18 +5,21 @@ jobs:
   linters:
     name: lint
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.7, 3.8]
     steps:
     - uses: actions/checkout@master
     - name: Install
       uses: abatilo/actions-poetry@v1.5.0
       with:
-        python_version: 3.8
+        python-version: ${{ matrix.python-version }}
         poetry_version: 1.0
         args: install
     - name: Lint with pre-commit
       uses: abatilo/actions-poetry@v1.5.0
       with:
-        python_version: 3.8
+        python-version: ${{ matrix.python-version }}
         poetry_version: 1.0
         args: run pre-commit run --all-files
   pytest:
@@ -27,12 +30,13 @@ jobs:
     - name: Install
       uses: abatilo/actions-poetry@v1.5.0
       with:
-        python_version: 3.8
+        python-version: ${{ matrix.python-version }}
         poetry_version: 1.0
         args: install
     - name: Run matrix of tests with Tox
       uses: abatilo/actions-poetry@v1.5.0
       with:
-        python_version: 3.8
+        python-version: ${{ matrix.python-version }}
         poetry_version: 1.0
         args: run tox
+

pyproject.toml

@@ -31,6 +31,7 @@ tox = "~3.12.0"  # sync with tox.ini
 mypy = "0.720"
 black = "19.3b0"
 pre-commit = "~1.17.0"
+tox-gh-actions = "^1.3.0"
 
 [build-system]
 requires = ["poetry>=0.12"]

tox.ini

@@ -14,3 +14,8 @@ deps =
     pytest-cov
 commands =
     pytest tests/ --cov-report=term-missing --cov=graphene_pydantic {posargs}
+
+[gh-actions]
+python =
+    3.7: py37
+    3.8: py38, mypy