CI: Switch to GitHub Actions

Because Travis CI is dead.

.github/workflows/ci.yaml

@@ -0,0 +1,52 @@
+---
+
+name: CI
+
+on:  # yamllint disable-line rule:truthy
+  push:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  lint:
+    name: Linters
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+      - run: python -m pip install flake8 flake8-import-order doc8 sphinx
+      - run: python -m pip install .
+      - run: flake8 .
+      - run: doc8 $(git ls-files '*.rst')
+      - run: yamllint --strict $(git ls-files '*.yaml' '*.yml')
+      - run: python setup.py build_sphinx
+
+  test:
+    name: Tests
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version:
+          - 3.5
+          - 3.6
+          - 3.7
+          - 3.8
+          - 3.9
+          - nightly
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.pyver }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.pyver }}
+      - run: python -m pip install coveralls
+      - run: python -m pip install .
+      - run: coverage run --source=yamllint -m unittest discover
+      - name: Coveralls
+        uses: AndreMiras/coveralls-python-action@develop

setup.cfg

@@ -67,3 +67,6 @@ yamllint = conf/*.yaml
 [options.entry_points]
 console_scripts =
   yamllint = yamllint.cli:run
+
+[coverage:run]
+relative_files = True

tests/test_cli.py

@@ -297,6 +297,7 @@ def test_run_with_config_file(self):
             cli.run(('-c', f.name, os.path.join(self.wd, 'a.yaml')))
         self.assertEqual(ctx.returncode, 1)
 
+    @unittest.skipIf(os.environ.get('GITHUB_RUN_ID'), '$HOME not overridable')
     def test_run_with_user_global_config_file(self):
         home = os.path.join(self.wd, 'fake-home')
         dir = os.path.join(home, '.config', 'yamllint')