fix: harden GitHub Actions workflows

.github/workflows/ci.yml

@@ -2,28 +2,36 @@ name: ci
 
 on: [push, pull_request]
 
+permissions:
+  contents: read
+
 jobs:
   test:
 
     runs-on: ubuntu-latest
 
     strategy:
       matrix:
-        python-version: [ '2.x', '3.x' ]
+        python-version: [ '3.6', '3.7', '3.8', '3.9', '3.10' ]
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@e9aba2c848f5ebd159c070c61ea2c4e2b122355e # v2
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install requirements
         run: |
           python -m pip install -r requirements.txt
-          python -m pip install pytest-codestyle || true
-          python -m pip install pytest-flakes
           python setup.py install
+      - name: Check source files
+        if: matrix.python-version == '3.10'
+        run: |
+          python -m pip install pytest-pycodestyle
+          python -m pip install pytest-flakes
+          py.test --pycodestyle ftw
+          py.test --flakes ftw
       - name: Run tests
         run: |
           py.test test/unit
@@ -32,6 +40,3 @@ jobs:
           py.test test/integration/test_http.py
           py.test test/integration/test_cookie.py --rule=test/integration/COOKIEFIXTURE.yaml
           py.test test/integration/test_runner.py --rule=test/integration/BASICFIXTURE.yaml
-          py.test --pycodestyle ftw || true
-          py.test --flakes ftw
-        continue-on-error: true

.github/workflows/publish.yml

@@ -0,0 +1,31 @@
+name: Upload Python Package
+
+on:
+  release:
+    types: [created]
+
+permissions:
+  contents: read
+
+jobs:
+  deploy:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
+    - name: Set up Python
+      uses: actions/setup-python@e9aba2c848f5ebd159c070c61ea2c4e2b122355e # v2
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install setuptools wheel twine
+    - name: Build and publish
+      env:
+        TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
+        TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
+      run: |
+        python setup.py sdist bdist_wheel
+        twine upload dist/*

ftw/errors.py

@@ -1,3 +1,3 @@
 class TestError(Exception):
     def __init___(self, msg, context_args):
-        Exception.__init__(self, "{0} {1}".format(msg, context_args))
+        Exception.__init__(self, '{0} {1}'.format(msg, context_args))