Update phpunit.xml file

Author: wpscholar

phpunit.xml

@@ -1,18 +1,20 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit
-    bootstrap="tests/bootstrap.php"
-    colors="true"
-    verbose="true"
-    stopOnFailure="false"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  bootstrap="tests/bootstrap.php"
+  colors="true"
+  verbose="true"
+  stopOnFailure="false"
+  xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.5/phpunit.xsd"
 >
-    <testsuites>
-        <testsuite name="Plugin Test Suite">
-            <directory>./tests/</directory>
-        </testsuite>
-    </testsuites>
-    <filter>
-        <whitelist processUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">./</directory>
-        </whitelist>
-    </filter>
-</phpunit> 
+  <coverage processUncoveredFiles="true">
+    <include>
+      <directory suffix=".php">./</directory>
+    </include>
+  </coverage>
+  <testsuites>
+    <testsuite name="Plugin Test Suite">
+      <directory>./tests/</directory>
+    </testsuite>
+  </testsuites>
+</phpunit>