Introduce code coverage workflow

Author: jaapio

.github/workflows/code-coverage.yml

@@ -0,0 +1,55 @@
+name: "Code coverage"
+
+on:
+  workflow_call:
+    inputs:
+      php-version:
+        description: "The PHP version to use when running the job"
+        default: "8.0"
+        required: false
+        type: "string"
+      php-extensions:
+        description: "The php extensions to install, allowing composer to pass"
+        default: "none, ctype, dom, json, mbstring, phar, simplexml, tokenizer, xml, xmlwriter, fileinfo"
+        required: false
+        type: "string"
+      composer-root-version:
+        description: "The version of the package being tested, in case of circular dependencies."
+        required: false
+        type: "string"
+      composer-options:
+        description: "Additional flags for the composer install command."
+        default: "--prefer-dist"
+        required: false
+        type: "string"
+      composer-dependencies:
+        description: "Composer dependency level to install"
+        default: "locked"
+        required: false
+        type: "string"
+
+jobs:
+  code-coverage:
+    name: "Code Coverage"
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v3"
+
+      - name: "Set up PHP"
+        uses: "shivammathur/setup-php@2.18.0"
+        with:
+          coverage: "xdebug"
+          extensions: "${{ inputs.php-extensions }}"
+          php-version: "${{ inputs.php-version }}"
+
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
+        with:
+          dependency-versions: "${{ inputs.composer-dependencies }}"
+          composer-options: "${{ inputs.composer-options }}"
+
+      - name: "Collect code coverage with Xdebug and phpunit/phpunit"
+        env:
+          XDEBUG_MODE: "coverage"
+        run: "vendor/bin/phpunit --colors=always --coverage-clover=.build/phpunit/logs/clover.xml"

.github/workflows/coding-standards.yml

@@ -22,6 +22,11 @@ on:
         default: "--prefer-dist"
         required: false
         type: "string"
+      composer-dependencies:
+        description: "Composer dependency level to install"
+        default: "locked"
+        required: false
+        type: "string"
 
 jobs:
   coding-standards:
@@ -53,7 +58,7 @@ jobs:
       - name: "Install dependencies with Composer"
         uses: "ramsey/composer-install@v1"
         with:
-          dependency-versions: "highest"
+          dependency-versions: "${{ inputs.composer-dependencies }}"
           composer-options: "${{ inputs.composer-options }}"
 
       - name: "Code style check"