Passing null to parameter #1 ($string) of type string is deprecated in xmlrpc_value_get_xml()

Tests only branch should fail test.

Hm, the actual expected data is not displayed correctly on https://www.drupal.org/pift-ci-job/2646968 →

But it can be found here:
https://dispatcher.drupalci.org/job/drupal8_contrib_patches/153516/artif...

<failure type="PHPUnit\Framework\ExpectationFailedException">
Drupal\Tests\xmlrpc\Unit\ValueTest::testValueGetXml with data set #5 ('<nil />', null) Failed asserting that two DOM documents are equal. --- Expected +++ Actual @@ @@ <?xml version="1.0"?> -<nil/> +<string/> /var/www/html/vendor/phpunit/phpunit/src/Framework/Constraint/Equality/IsEqual.php:96 /var/www/html/modules/contrib/xmlrpc/tests/src/Unit/ValueTest.php:28 /var/www/html/vendor/phpunit/phpunit/src/Framework/TestResult.php:728 /var/www/html/vendor/phpunit/phpunit/src/Framework/TestSuite.php:675 /var/www/html/vendor/phpunit/phpunit/src/Framework/TestSuite.php:675 /var/www/html/vendor/phpunit/phpunit/src/TextUI/TestRunner.php:653 /var/www/html/vendor/phpunit/phpunit/src/TextUI/Command.php:144 /var/www/html/vendor/phpunit/phpunit/src/TextUI/Command.php:97
</failure>

I don't see the deprecated warning displayed on the testbot, but I did see it locally:

Other deprecation notices (1)

1x: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated
1x in ValueTest::testValueGetXml from Drupal\Tests\xmlrpc\Unit

Merged!

Automatically closed - issue fixed for 2 weeks with no activity.

fgm → closed merge request !4