fix integration tests

metager/phpunit.xml

 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit backupGlobals="false"
-         backupStaticAttributes="false"
-         bootstrap="bootstrap/autoload.php"
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
          colors="true"
-         convertErrorsToExceptions="true"
-         convertNoticesToExceptions="true"
-         convertWarningsToExceptions="true"
-         processIsolation="false"
-         stopOnFailure="false">
+>
     <testsuites>
-        <testsuite name="Application Test Suite">
-            <directory suffix="Test.php">./tests</directory>
+        <testsuite name="Unit">
+            <directory>tests</directory>
         </testsuite>
     </testsuites>
-    <filter>
-        <whitelist processUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">./app</directory>
-        </whitelist>
-    </filter>
+    <source>
+        <include>
+            <directory>app</directory>
+        </include>
+    </source>
     <php>
         <env name="APP_ENV" value="testing"/>
         <env name="CACHE_STORE" value="array"/>