Make CI green (#4)

* Make sure we can run the tests

* CS fixes

* Bugfix

* Normalize composer

Author: Nyholm

phpunit.xml.dist

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+         backupGlobals="false"
+         colors="true"
+         bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
+>
+  <php>
+    <ini name="error_reporting" value="-1"/>
+  </php>
+  <testsuites>
+    <testsuite name="Test Suite">
+      <directory>./tests</directory>
+    </testsuite>
+  </testsuites>
+</phpunit>

src/Runtime.php

@@ -17,7 +17,7 @@ class Runtime extends GenericRuntime
 
     public function __construct(array $options)
     {
-        $this->port = $options['port'];
+        $this->port = $options['port'] ?? 8080;
         parent::__construct($options);
     }