Launch tests on GitHub Actions

.github/workflows/tests.yml

@@ -0,0 +1,27 @@
+name: webencoding's tests
+on: [push, pull_request]
+
+jobs:
+  tests:
+    name: ${{ matrix.os }} - ${{ matrix.python-version }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: ['3.12']
+        include:
+          - os: ubuntu-latest
+            python-version: '3.8'
+          - os: ubuntu-latest
+            python-version: 'pypy-3.9'
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install tests’ requirements
+        run: python -m pip install .[test]
+      - name: Launch tests
+        run: python -m pytest
+      - name: Check coding style
+        run: python -m ruff check

mklabels.py

@@ -40,7 +40,7 @@ def generate(url):
 ''']
     labels = [
         (repr(assert_lower(label)).lstrip('u'),
-         repr(encoding['name']).lstrip('u'))
+         repr(encoding['name'].lower()).lstrip('u'))
         for category in json.loads(urlopen(url).read().decode('ascii'))
         for encoding in category['encodings']
         for label in encoding['labels']]