add phpunit config

.github/workflows/tests.yml

@@ -67,4 +67,4 @@ jobs:
                   composer require "phpunit/phpunit:${{ matrix.phpunit }}" --no-interaction
                   composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction
             - name: Execute tests
-              run: vendor/bin/phpunit tests
+              run: vendor/bin/phpunit

composer.json

@@ -46,6 +46,6 @@
         "sort-packages": true
     },
     "scripts": {
-        "test": "vendor/bin/phpunit tests"
+        "test": "vendor/bin/phpunit"
     }
 }

phpunit.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.2/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         colors="true">
+    <testsuites>
+        <testsuite name="Test Suite">
+            <directory suffix="Test.php">./tests</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>