ci: move to GitHub Actions (pdbpp#444)

Closes pdbpp#441.

(cherry picked from commit 3476f0a)

.github/workflows/ci.yml

@@ -0,0 +1,150 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - "master"
+      - "release-*"
+  pull_request:
+    branches:
+      - "master"
+      - "release-*"
+  workflow_dispatch:
+
+env:
+  PYTEST_ADDOPTS: "-vv --cov-report=xml:coverage-ci.xml"
+  PIP_DISABLE_PIP_VERSION_CHECK: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  tests:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # Linux
+          - tox_env: "py39-ipython-coverage"
+            python: "3.9"
+            os: ubuntu-20.04
+          - tox_env: "py38-coverage"
+            python: "3.8"
+            os: ubuntu-20.04
+          - tox_env: "py37-coverage"
+            python: "3.7"
+            os: ubuntu-20.04
+          - tox_env: "py36-coverage"
+            python: "3.6"
+            os: ubuntu-20.04
+          - tox_env: "py35-coverage"
+            python: "3.5"
+            os: ubuntu-20.04
+
+          - tox_env: "py27-coverage"
+            python: "2.7"
+            os: ubuntu-20.04
+            pytest: "pytest @ git+https://github.com/blueyed/pytest@my-4.6-maintenance"
+
+          - tox_env: "pypy3-coverage"
+            python: "pypy-3.7"
+            os: ubuntu-20.04
+          - tox_env: "pypy-coverage"
+            python: "pypy-2.7"
+            os: ubuntu-20.04
+            pytest: "pytest @ git+https://github.com/blueyed/pytest@my-4.6-maintenance"
+
+          # macOS
+          - tox_env: "py37-coverage"
+            python: "3.7"
+            os: macos-10.15
+
+          # Windows
+          - tox_env: "py38-coverage"
+            python: "3.8"
+            os: windows-2019
+          - tox_env: "py34-coverage"
+            python: "3.4"
+            # Python 3.4 is only available on Windows.
+            # (https://github.com/actions/setup-python/issues/157#issuecomment-724152312)
+            os: windows-2019
+            pytest: "pytest @ git+https://github.com/blueyed/pytest@my-4.6-maintenance"
+            tox: tox==3.14.0  # tox 3.14.1 dropped support for py34.
+            tox_args: "-e py34-coverage"  # no '--durations'.
+          - tox_env: "py27-coverage"
+            python: "2.7"
+            os: windows-2016
+            pytest: "pytest @ git+https://github.com/blueyed/pytest@my-4.6-maintenance"
+
+          # Generic
+          - tox_env: "checkqa"
+            python: "3.9"
+            os: ubuntu-20.04
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 2000
+    - name: Set up Python ${{ matrix.python }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python }}
+
+    # Caching.
+    - name: set PY_CACHE_KEY
+      run: echo "PY_CACHE_KEY=$(python -c 'import hashlib, sys;print(hashlib.sha256(sys.version.encode()+sys.executable.encode()).hexdigest())')" >> $GITHUB_ENV
+    - name: Cache .tox
+      uses: actions/cache@v1
+      with:
+        path: ${{ github.workspace }}/.tox/${{ matrix.tox_env }}
+        key: "tox|${{ matrix.os }}|${{ matrix.tox_env }}|${{ env.PY_CACHE_KEY }}|${{ hashFiles('tox.ini', 'setup.*') }}"
+
+    - name: (Initial) version information/pinning
+      run: |
+        python -m site
+        python -m pip --version
+        python -m pip list
+        if [[ "${{ matrix.python }}" == "3.4" ]]; then
+          # Install latest available pip.
+          # 7.1.2 (installed) is too old to not install too new packages,
+          # including pip itself.  19.2 dropped support for Python 3.4.
+          python -m pip install -U pip==19.1.1
+        fi
+        python -m pip install -U setuptools==42.0.2
+        python -m pip install -U virtualenv==20.4.3
+
+    - name: Install tox
+      run: python -m pip install ${{ matrix.tox || 'git+https://github.com/blueyed/tox@master' }}
+
+    - name: Version information
+      run: python -m pip list
+
+    - name: Setup tox environment
+      env:
+        PYTEST: ${{ matrix.pytest || 'pytest @ git+https://github.com/blueyed/pytest@my-master' }}
+        TOX_ARGS: "${{ matrix.tox_args || format('--durations -e {0}', matrix.tox_env) }}"
+      run: python -m tox --notest -v $TOX_ARGS --force-dep="$PYTEST"
+
+    - name: Test
+      env:
+        COLUMNS: "90"  # better alignment (working around https://github.com/blueyed/pytest/issues/491).
+        PY_COLORS: "1"
+        PYTEST: ${{ matrix.pytest || 'pytest @ git+https://github.com/blueyed/pytest@my-master' }}
+        # UTF-8 mode for Windows (https://docs.python.org/3/using/windows.html#utf-8-mode).
+        PYTHONUTF8: "1"
+        TOX_ARGS: "${{ matrix.tox_args || format('--durations -e {0}', matrix.tox_env) }}"
+        TOX_TESTENV_PASSENV: "PYTHONUTF8"
+      run: python -m tox -v $TOX_ARGS --force-dep="$PYTEST"
+
+    - name: Report coverage
+      if: always() && (contains(matrix.tox_env, '-coverage'))
+      uses: codecov/codecov-action@v1
+      with:
+        files: ./coverage-ci.xml
+        flags: ${{ runner.os }}
+        name: ${{ matrix.tox_env }}
+        fail_ci_if_error: true
+        verbose: true

tox.ini

@@ -9,8 +9,11 @@ deps =
 setenv =
     coverage: PYTEST_ADDOPTS=--cov --cov-report=xml --cov-report=term-missing {env:PYTEST_ADDOPTS:}
 passenv =
+    CI
+    COLUMNS
     PYTEST_ADDOPTS
-
+    PY_COLORS
+    TERM
 commands = pytest {posargs}
 
 [testenv:checkqa]