Code coverage in GitHub Actions

.github/workflows/build.yml

@@ -123,6 +123,42 @@ jobs:
       - name: "Tests"
         run: "vendor/bin/phing tests"
 
+  tests-code-coverage:
+    name: "Tests with code coverage"
+
+    runs-on: "ubuntu-latest"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2.0.0"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@1.8.2"
+        with:
+          coverage: "pcov"
+          php-version: "7.4"
+
+      - name: "Cache dependencies"
+        uses: "actions/cache@v1.1.2"
+        with:
+          path: "~/.composer/cache"
+          key: "php-${{ matrix.php-version }}-composer-${{ hashFiles('**/composer.json') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-"
+
+      - name: "Install dependencies"
+        run: "composer update --no-interaction --no-progress --no-suggest"
+
+      - name: "Tests"
+        run: |
+          composer require pcov/clobber --dev && \
+          vendor/bin/pcov clobber && \
+          php -dpcov.enabled=1 -dpcov.directory=. -dpcov.exclude="~vendor~" vendor/bin/phpunit -c tests/phpunit.xml tests
+
+      - name: "Codecov.io"
+        env:
+          CODECOV_TOKEN: "${{ secrets.CODECOV_TOKEN }}"
+        run: "bash <(curl -s https://codecov.io/bash) -f tests/tmp/clover.xml"
+
   tests-windows:
     name: "Tests on Windows"