chore: Refactor PHPUnit configuration for improved code coverage filtering

Author: ajaydsouza

phpunit.xml.dist

@@ -1,14 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/7.5/phpunit.xsd"
-		bootstrap="phpunit/bootstrap.php"
-		backupGlobals="false"
-		colors="true"
-		convertErrorsToExceptions="true"
-		convertNoticesToExceptions="true"
-		convertWarningsToExceptions="true"
-	>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/7.5/phpunit.xsd" bootstrap="phpunit/bootstrap.php" backupGlobals="false" colors="true" convertErrorsToExceptions="true" convertNoticesToExceptions="true" convertWarningsToExceptions="true">
 	<testsuites>
 		<testsuite name="default">
 			<directory suffix=".php">phpunit/tests/</directory>
@@ -17,7 +8,13 @@
 
 	<filter>
 		<whitelist addUncoveredFilesFromWhitelist="true" processUncoveredFilesFromWhitelist="false">
-			<directory>./src/</directory>
+			<directory>./</directory>
+			<exclude>
+				<directory>vendor/</directory>
+				<directory>node_modules/</directory>
+				<directory>phpunit/</directory>
+				<directory>build/</directory>
+			</exclude>
 		</whitelist>
 	</filter>
 </phpunit>