Tests: Refresh PHPUnit config to add coverage

.gitignore

@@ -1,7 +1,7 @@
+/.phpunit.cache/
 /node_modules/
 /vendor/
 /.phpcs.xml
-/.phpunit.result.cache
 /composer.lock
 /phpcs.xml
 /phpunit.xml

composer.json

@@ -49,6 +49,14 @@
 		}
 	},
 	"scripts": {
+		"coverage": [
+			"@putenv WP_MULTISITE=1",
+			"@php ./vendor/bin/phpunit --exclude=ms-excluded --coverage-html ./.phpunit.cache/coverage-html"
+		],
+		"coverage-ci": [
+			"@putenv WP_MULTISITE=1",
+			"@php ./vendor/bin/phpunit --exclude=ms-excluded"
+		],
 		"cs": [
 			"@php ./vendor/bin/phpcs -p -s -v -n . --standard=\"WordPress-VIP-Go\" --extensions=php --ignore=\"/vendor/*,/node_modules/*,/tests/*\""
 		],
@@ -65,11 +73,11 @@
 			"bash bin/install-wp-tests.sh wordpress_test root root localhost"
 		],
 		"integration": [
-			"@php ./vendor/bin/phpunit --exclude=ms-required"
+			"@php ./vendor/bin/phpunit --exclude=ms-required --no-coverage"
 		],
 		"integration-ms": [
 			"@putenv WP_MULTISITE=1",
-			"@php ./vendor/bin/phpunit --exclude=ms-excluded"
+			"@php ./vendor/bin/phpunit --exclude=ms-excluded --no-coverage"
 		],
 		"behat": "run-behat-tests",
 		"behat-rerun": "rerun-behat-tests",

phpunit.xml.dist

@@ -1,19 +1,42 @@
-<phpunit
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.6/phpunit.xsd"
-	bootstrap="tests/Integration/bootstrap.php"
-	backupGlobals="false"
-	colors="true"
-	beStrictAboutTestsThatDoNotTestAnything="true"
-	beStrictAboutOutputDuringTests="true"
-	convertErrorsToExceptions="true"
-	convertWarningsToExceptions="true"
-	convertNoticesToExceptions="true"
-	convertDeprecationsToExceptions="true"
->
-	<testsuites>
-		<testsuite name="default">
-			<directory>./tests/</directory>
-		</testsuite>
-	</testsuites>
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.6/phpunit.xsd"
+         bootstrap="tests/Integration/bootstrap.php"
+         cacheResultFile=".phpunit.cache/test-results"
+         executionOrder="depends,defects"
+         forceCoversAnnotation="false"
+         beStrictAboutCoversAnnotation="false"
+         beStrictAboutOutputDuringTests="true"
+         beStrictAboutTodoAnnotatedTests="true"
+         convertDeprecationsToExceptions="true"
+         colors="true"
+         failOnRisky="true"
+         failOnWarning="true"
+		 testdox="true"
+         verbose="true">
+    <testsuites>
+        <testsuite name="Integration">
+            <directory>tests/Integration</directory>
+        </testsuite>
+    </testsuites>
+
+    <coverage cacheDirectory=".phpunit.cache/code-coverage"
+              processUncoveredFiles="true">
+        <include>
+			<file>co-authors-plus.php</file>
+			<file>template-tags.php</file>
+			<file>upgrade.php</file>
+			<directory>php</directory>
+        </include>
+		<exclude>
+			<!-- Inclusion of the next file breaks code coverage with Class "Yoast\WP\SEO\Generators\Schema\Author" not found -->
+			<file>php/integrations/yoast/class-coauthor.php</file>
+			<!-- The next view file has a floating $this which breaks PHPUnit coverage. -->
+			<file>php/integrations/amp/meta-author.php</file>
+		</exclude>
+		<report>
+			<text outputFile="php://stdout"/>
+			<clover outputFile=".phpunit.cache/clover.xml"/>
+		</report>
+    </coverage>
 </phpunit>