Merge branch '5.2' into 5.x

* 5.2:
  Update deprecated PHPUnit schema & doc links

Author: javiereguiluz

create_framework/unit_testing.rst

@@ -13,25 +13,25 @@ using `PHPUnit`_. Create a PHPUnit configuration file in
 
 .. code-block:: xml
 
-    <?xml version="1.0" encoding="UTF-8" ?>
+    <?xml version="1.0" encoding="UTF-8"?>
     <phpunit
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/5.1/phpunit.xsd"
+        xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
         backupGlobals="false"
         colors="true"
         bootstrap="vendor/autoload.php"
     >
+        <coverage processUncoveredFiles="true">
+            <include>
+                <directory suffix=".php">./src</directory>
+            </include>
+        </coverage>
+        
         <testsuites>
             <testsuite name="Test Suite">
                 <directory>./tests</directory>
             </testsuite>
         </testsuites>
-
-        <filter>
-            <whitelist processUncoveredFilesFromWhitelist="true">
-                <directory suffix=".php">./src</directory>
-            </whitelist>
-        </filter>
     </phpunit>
 
 This configuration defines sensible defaults for most PHPUnit settings; more
@@ -215,6 +215,6 @@ Symfony code.
 Now that we are confident (again) about the code we have written, we can
 safely think about the next batch of features we want to add to our framework.
 
-.. _`PHPUnit`: https://phpunit.de/manual/current/en/index.html
-.. _`test doubles`: https://phpunit.de/manual/current/en/test-doubles.html
+.. _`PHPUnit`: https://phpunit.readthedocs.io/en/stable/
+.. _`test doubles`: https://phpunit.readthedocs.io/en/stable/test-doubles.html
 .. _`XDebug`: https://xdebug.org/