update PHPUnit configuration

Author: alexkart

phpunit.xml.dist

@@ -1,31 +1,27 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.1/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
          backupGlobals="false"
          colors="true"
          verbose="true"
          bootstrap="vendor/autoload.php"
          failOnRisky="true"
-         failOnWarning="true"
->
+         failOnWarning="true">
+    <coverage>
+        <include>
+            <directory>./</directory>
+        </include>
+        <exclude>
+            <directory>./tests</directory>
+            <directory>./vendor</directory>
+        </exclude>
+    </coverage>
     <php>
         <ini name="error_reporting" value="-1"/>
     </php>
-
     <testsuites>
         <testsuite name="Tests">
             <directory>./tests/</directory>
         </testsuite>
     </testsuites>
-
-    <filter>
-        <whitelist>
-            <directory>./</directory>
-            <exclude>
-                <directory>./tests</directory>
-                <directory>./vendor</directory>
-            </exclude>
-        </whitelist>
-    </filter>
-</phpunit>
+</phpunit>