Added support for GitLab CI

.gitignore

@@ -1,2 +1,3 @@
 vendor/
 /.phpunit.result.cache
+.phpunit.cache/

.gitlab-ci.yml

@@ -0,0 +1,14 @@
+# From https://docs.gitlab.com/ee/ci/examples/php.html
+image: php:7.4-cli
+
+before_script:
+  # Install dependencies
+  - bash ci/docker_install.sh > /dev/null
+
+test:
+  script:
+    - php composer.phar run test:gitlab
+  artifacts:
+    when: always
+    reports:
+      junit: report.xml

ci/docker_install.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+# From https://docs.gitlab.com/ee/ci/examples/php.html
+
+# We need to install dependencies only for Docker
+[[ ! -e /.dockerenv ]] && exit 0
+
+set -xe
+
+# Install git (the php image doesn't have it) which is required by composer
+apt-get update -yqq
+apt-get install git wget unzip -yqq
+
+# Install & enable Xdebug for code coverage reports
+pecl install xdebug
+docker-php-ext-enable xdebug
+
+# Install composer dependencies
+wget https://composer.github.io/installer.sig -O - -q | tr -d '\n' > installer.sig
+php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
+php -r "if (hash_file('SHA384', 'composer-setup.php') === file_get_contents('installer.sig')) { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
+php composer-setup.php
+php -r "unlink('composer-setup.php'); unlink('installer.sig');"
+php composer.phar install

composer.json

@@ -4,5 +4,18 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^9"
+    },
+    "scripts": {
+        "test": [
+            "phpunit --configuration phpunit.xml"
+        ],
+        "test:coverage": [
+            "@putenv XDEBUG_MODE=coverage",
+            "phpunit --configuration phpunit.xml --coverage-text"
+        ],
+        "test:gitlab": [
+            "@putenv XDEBUG_MODE=coverage",
+            "phpunit --configuration phpunit.xml --log-junit report.xml"
+        ]
     }
 }

phpunit.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.5/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         cacheResultFile=".phpunit.cache/test-results"
+         executionOrder="depends,defects"
+         failOnRisky="true"
+         failOnWarning="true"
+         verbose="true">
+    <testsuites>
+        <testsuite name="default">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <coverage cacheDirectory=".phpunit.cache/code-coverage"
+              processUncoveredFiles="true">
+        <include>
+            <directory suffix=".php">src</directory>
+        </include>
+    </coverage>
+</phpunit>