Enable strict check for phpunit 5.7

Author: Xerkus

phpunit.xml.dist

@@ -1,7 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/phpunit.xsd"
-         bootstrap="./test/bootstrap.php"
+         bootstrap="./vendor/autoload.php"
+         beStrictAboutOutputDuringTests="true"
+         beStrictAboutTestsThatDoNotTestAnything="true"
          colors="true">
     <testsuites>
         <testsuite name="zend-validator Test Suite">