ci: add code coverage support

.github/workflows/continuous-integration.yml.tpl

@@ -1,5 +1,8 @@
 name: "Continuous integration"
 
+# To enable code coverage reporting,
+# ensure that the project variable "CODE_COVERAGE" is set to "true"
+
 on:
   push:
     branches:
@@ -33,3 +36,35 @@ jobs:
       glpi-version: "${{ matrix.glpi-version }}"
       php-version: "${{ matrix.php-version }}"
       db-image: "${{ matrix.db-image }}"
+      code-coverage: ${{ vars.CODE_COVERAGE == 'true' }} # Value is obtained from project variables
+
+  coverage-report:
+    needs: "ci"
+    if: vars.CODE_COVERAGE == 'true' && github.event_name == 'pull_request'
+    runs-on: "ubuntu-latest"
+    name: "Coverage report"
+    steps:
+      - name: "Download coverage report"
+        uses: "actions/download-artifact@v4"
+        with:
+          name: "coverage-report"
+
+      - name: "Generate coverage summary"
+        uses: "irongut/CodeCoverageSummary@v1.3.0"
+        with:
+          filename: cobertura.xml
+          badge: true
+          fail_below_min: false
+          format: markdown
+          hide_branch_rate: false
+          hide_complexity: true
+          indicators: true
+          output: both
+          thresholds: '50 75'
+
+      - name: "Add coverage comment"
+        uses: "marocchino/sticky-pull-request-comment@v2"
+        if: ${{ github.event_name == 'pull_request' }}
+        with:
+          header: coverage
+          path: code-coverage-results.md

README.md

@@ -31,6 +31,11 @@ You can also provide a destination path (ie. if your `empty` directory is not in
 * `{UNAME}` will be replaced by the uppercased name,
 * `{YEAR}` will be replaced by the current year.
 
+## Enabling Code coverage
+By default, code coverage is disabled.
+
+If you want to enable it, you have to set your project environment variable `CODE_COVERAGE` to `true`.
+
 ## Updating Your Plugin
 
 To import the changes made to the _pluginsGLPI empty_ template into your project,