ci: refactor jobs and improve platform coverage

Author: abn

.github/workflows/ci.yml

@@ -1,74 +1,65 @@
 name: CI
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - '**'
 
 jobs:
-
-  check-formatting:
-    runs-on: ubuntu-latest
-
-    name: Consult black on python formatting
+  tests:
+    name: ${{ matrix.os }} / ${{ matrix.python-version }}
+    runs-on: ${{ matrix.os }}-latest
+    strategy:
+      matrix:
+        os: [Ubuntu, MacOS, Windows]
+        python-version: [3.6, 3.7, 3.8]
 
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
-        with:
-          python-version: 3.7
-      - uses: Gr1N/setup-poetry@v2
-      - uses: actions/cache@v2
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v1
         with:
-          path: ~/.cache/pypoetry/virtualenvs
-          key: ${{ runner.os }}-poetry-${{ hashFiles('poetry.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-poetry-
-      - name: Install dependencies
-        run: poetry install
-      - name: Run black
-        run: poetry run poe check-style
+          python-version: ${{ matrix.python-version }}
 
-  run-tests:
-    runs-on: ubuntu-latest
+      - name: Get full Python version
+        id: full-python-version
+        shell: bash
+        run: echo ::set-output name=version::$(python -c "import sys; print('-'.join(str(v) for v in sys.version_info))")
 
-    name: Run tests with tox
+      - name: Install poetry
+        shell: bash
+        run: |
+          python -m pip install poetry
+          echo "::set-env name=PATH::$HOME/.poetry/bin:$PATH"
 
-    strategy:
-      matrix:
-        python-version: [ '3.6', '3.7', '3.8']
+      - name: Configure poetry
+        shell: bash
+        run: poetry config virtualenvs.in-project true
 
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
-      - uses: Gr1N/setup-poetry@v2
-      - uses: actions/cache@v2
+      - name: Set up cache
+        uses: actions/cache@v2
+        id: cache
         with:
-          path: ~/.cache/pypoetry/virtualenvs
-          key: ${{ runner.os }}-poetry-${{ hashFiles('poetry.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-poetry-
+          path: .venv
+          key: venv-${{ runner.os }}-${{ steps.full-python-version.outputs.version }}-${{ hashFiles('**/poetry.lock') }}
+
+      - name: Ensure cache is healthy
+        if: steps.cache.outputs.cache-hit == 'true'
+        shell: bash
+        run: poetry run pip --version >/dev/null 2>&1 || rm -rf .venv
+
       - name: Install dependencies
+        shell: bash
         run: |
           poetry run pip install --upgrade pip
           poetry install
-      - name: Run tests
+
+      - name: Execute test suite
+        shell: bash
         run: |
           poetry run poe generate
           poetry run poe test
-
-  build-release:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
-        with:
-          python-version: 3.7
-      - uses: Gr1N/setup-poetry@v2
-      - name: Build package
-        run: poetry build
-      - name: Publish package to PyPI
-        if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')
-        run: poetry publish -n
-        env:
-          POETRY_PYPI_TOKEN_PYPI: ${{ secrets.pypi }}

.github/workflows/code-quality.yml

@@ -0,0 +1,20 @@
+name: Code Quality
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - '**'
+
+jobs:
+  black:
+    name: Black
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Run Black
+      uses: lgeiger/black-action@master
+      with:
+        args: --check src/ tests/

.github/workflows/release.yml

@@ -0,0 +1,31 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - '**'
+  pull_request:
+    branches:
+      - '**'
+
+jobs:
+  packaging:
+    name: Distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+      - name: Install poetry
+        run: python -m pip install poetry
+      - name: Build package
+        run: poetry build
+      - name: Publish package to PyPI
+        if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')
+        env:
+          POETRY_PYPI_TOKEN_PYPI: ${{ secrets.pypi }}
+        run: poetry publish -n