Update test deps and configure GitHub Actions for CI

Author: Jean Cochrane (Lead developer, DataMade)

.github/workflows/main.yml

@@ -0,0 +1,40 @@
+name: CI
+
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+    branches:
+    - master
+
+jobs:
+  test:
+    name: Test against different Python versions
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python: [3.5.x, 3.6.x, 3.7.x]
+        sqlalchemy: [1.2.*, 1.3.*]
+    services:
+      postgres:
+        image: postgres:11
+        ports:
+        - 5432:5432
+        # needed because the postgres container does not provide a healthcheck
+        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/setup-python@v1
+      with:
+        python-version: ${{ matrix.python }}
+        architecture: x64
+    - name: Install packages and run tests
+      run: |
+        pip install --upgrade pip
+        pip install -e .[tests]
+        pip install --upgrade sqlalchemy=="${SQLALCHEMY_VERSION}"
+        pytest
+      env:
+        TEST_DATABASE_URL: postgresql://postgres@localhost:5432/pytest_test
+        SQLALCHEMY_VERSION: ${{ matrix.sqlalchemy }}

setup.py

@@ -21,7 +21,7 @@ def readme():
                       'SQLAlchemy>=1.2.2',
                       'Flask-SQLAlchemy>=2.3',
                       'packaging>=14.1'],
-    extras_require={'tests': ['pytest-postgresql']},
+    extras_require={'tests': ['pytest-postgresql<2.0', 'psycopg2-binary']},
     classifiers=[
         'Development Status :: 4 - Beta',
         'Environment :: Plugins',