feat: inline testing

phpunit.inline.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.0/phpunit.xsd"
+         backupGlobals="false"
+         beStrictAboutTestsThatDoNotTestAnything="true"
+         beStrictAboutOutputDuringTests="true"
+         bootstrap="vendor/autoload.php"
+         cacheResult="false"
+         colors="true"
+         failOnRisky="true"
+         failOnWarning="true"
+         processIsolation="false"
+         stopOnError="false"
+         stopOnFailure="false"
+         cacheDirectory=".phpunit.cache"
+         backupStaticProperties="false"
+         displayDetailsOnIncompleteTests="true"
+         displayDetailsOnSkippedTests="true"
+         displayDetailsOnTestsThatTriggerDeprecations="true"
+         displayDetailsOnTestsThatTriggerErrors="true"
+         displayDetailsOnTestsThatTriggerNotices="true"
+         displayDetailsOnTestsThatTriggerWarnings="true"
+>
+    <testsuites>
+        <testsuite name="default">
+            <directory suffix=".php">./src</directory>
+        </testsuite>
+    </testsuites>
+    <coverage>
+        <include>
+            <directory suffix=".php">./src</directory>
+        </include>
+    </coverage>
+</phpunit>