PHPUnit 10 marks empty data provider as invalid with the text "Empty data set provided by data provider" and count this as errors.
Some of the provider of the abstract ExtensionJsonTestBase are designed to return empty array in case there is nothing in extension.json to test.
Throwing an exception (like markTestSkipped) does not work under PHPUnit 10.
It also exit phpunit due to use of markTestSkipped in data provider
Running with MediaWiki settings because there might be integration tests PHPUnit 10.5.63 by Sebastian Bergmann and contributors. self::$requireHookHandlers is not enabled
Example from AbuseFilter. But also CentralAuth or CheckUser have this test.
1) MediaWiki\Extension\AbuseFilter\Tests\Integration\AbuseFilterExtensionJsonTest::testHookUsesHookHandler The data provider specified for MediaWiki\Extension\AbuseFilter\Tests\Integration\AbuseFilterExtensionJsonTest::testHookUsesHookHandler is invalid Empty data set provided by data provider AbuseFilter\tests\phpunit\integration\AbuseFilterExtensionJsonTest.php:135 2) MediaWiki\Extension\AbuseFilter\Tests\Integration\AbuseFilterExtensionJsonTest::testContentHandler The data provider specified for MediaWiki\Extension\AbuseFilter\Tests\Integration\AbuseFilterExtensionJsonTest::testContentHandler is invalid Empty data set provided by data provider AbuseFilter\tests\phpunit\integration\AbuseFilterExtensionJsonTest.php:168 3) MediaWiki\Extension\AbuseFilter\Tests\Integration\AbuseFilterExtensionJsonTest::testSessionProviders The data provider specified for MediaWiki\Extension\AbuseFilter\Tests\Integration\AbuseFilterExtensionJsonTest::testSessionProviders is invalid Empty data set provided by data provider AbuseFilter\tests\phpunit\integration\AbuseFilterExtensionJsonTest.php:266 4) MediaWiki\Extension\AbuseFilter\Tests\Integration\AbuseFilterExtensionJsonTest::testJobClasses The data provider specified for MediaWiki\Extension\AbuseFilter\Tests\Integration\AbuseFilterExtensionJsonTest::testJobClasses is invalid Empty data set provided by data provider AbuseFilter\tests\phpunit\integration\AbuseFilterExtensionJsonTest.php:280 5) MediaWiki\Extension\AbuseFilter\Tests\Integration\AbuseFilterExtensionJsonTest::testRestRoutes The data provider specified for MediaWiki\Extension\AbuseFilter\Tests\Integration\AbuseFilterExtensionJsonTest::testRestRoutes is invalid Empty data set provided by data provider AbuseFilter\tests\phpunit\integration\AbuseFilterExtensionJsonTest.php:334