Test Github action for tests (#17)

.github/workflows/ci.yml

@@ -0,0 +1,30 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+jobs:
+  tests:
+    runs-on: 'ubuntu-latest'
+    strategy:
+      matrix:
+        php-version: ['7.4', '8.0', '8.1', '8.2']
+    name: Test for PHP Version ${{ matrix.php-version }}
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: php-actions/composer@v6
+        with:
+          php_version: ${{ matrix.php-version }}
+
+      - uses: php-actions/phpunit@master
+        with:
+          bootstrap: vendor/autoload.php
+          configuration: phpunit.xml
+          php_version: ${{ matrix.php-version }}
+          version: 9
+

phpunit.xml

@@ -1,23 +1,15 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit backupGlobals="false"
-         backupStaticAttributes="false"
-         colors="true"
-         convertErrorsToExceptions="true"
-         convertNoticesToExceptions="true"
-         convertWarningsToExceptions="true"
-         processIsolation="false"
-         stopOnFailure="false"
-         beStrictAboutTestsThatDoNotTestAnything="false">
-    <testsuites>
-        <testsuite name="Unit">
-            <directory suffix="Test.php">./tests/Unit</directory>
-        </testsuite>
-    </testsuites>
-    <filter>
-        <whitelist processUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">./src</directory>
-        </whitelist>
-    </filter>
-    <php>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" backupGlobals="false" backupStaticAttributes="false" colors="true" convertErrorsToExceptions="true" convertNoticesToExceptions="true" convertWarningsToExceptions="true" processIsolation="false" stopOnFailure="false" beStrictAboutTestsThatDoNotTestAnything="false" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
+  <coverage processUncoveredFiles="true">
+    <include>
+      <directory suffix=".php">./src</directory>
+    </include>
+  </coverage>
+  <testsuites>
+    <testsuite name="Unit">
+      <directory suffix="Test.php">./tests/Unit</directory>
+    </testsuite>
+  </testsuites>
+  <php>
     </php>
 </phpunit>