Add GitHub worflow for testing

.github/workflows/tests.yml

@@ -0,0 +1,59 @@
+name: Run PyGreSQL test matrix
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  tests:
+    name: Unit tests run
+    runs-on: ubuntu-18.04
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - {python: "2.7", postgres: "9.3"}
+          - {python: "3.5", postgres: "9.6"}
+          - {python: "3.6", postgres: "10"}
+          - {python: "3.7", postgres: "11"}
+          - {python: "3.8", postgres: "12"}
+          - {python: "3.9", postgres: "13"}
+          - {python: "3.10", postgres: "14"}
+
+          # Opposite extremes of the supported Py/PG range, other architecture
+          - {python: "2.7", postgres: "14", architecture: "x86"}
+          - {python: "3.5", postgres: "13", architecture: "x86"}
+          - {python: "3.6", postgres: "12", architecture: "x86"}
+          - {python: "3.7", postgres: "11", architecture: "x86"}
+          - {python: "3.8", postgres: "10", architecture: "x86"}
+          - {python: "3.9", postgres: "9.6", architecture: "x86"}
+          - {python: "3.10", postgres: "9.3", architecture: "x86"}
+
+    services:
+      postgresql:
+        image: postgres:${{ matrix.postgres }}
+        env:
+          POSTGRES_USER: unittest
+          POSTGRES_PASSWORD: test
+        ports:
+          - 5432:5432
+        # Set health checks to wait until postgres has started
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install tox
+        run: pip install tox
+      - uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python }}
+      - name: Run tests
+        env:
+          MATRIX_PYTHON: ${{ matrix.python }}
+        run: tox -e py${MATRIX_PYTHON/./}
+        timeout-minutes: 5

tox.ini

@@ -1,7 +1,7 @@
 # config file for tox
 
 [tox]
-envlist = py{27,35,36,37,38,39,310},flake8,docs
+envlist = 27,3{5,6,7,8,9,10},flake8,docs
 
 [testenv:flake8]
 basepython = python3.9