PHPUnit parser not showing error content

[mbeccati]

Describe the bug

The new PHPUnit parser is working fine, but failures output is pretty much useless.

To Reproduce

1. Check https://github.com/mbeccati/php-latest-builds/actions/runs/21581357714#user-content-r0
2. Error message is not displayed

Expected behavior

Error type is displayed instead of the error message, which is the most important part.

Screenshots

Additional context

XML was:

<testcase name="testCastModernDocumentType" file="/home/runner/work/php-latest-builds/php-latest-builds/src/Symfony/Component/VarDumper/Tests/Caster/DOMCasterTest.php" line="230" class="Symfony\Component\VarDumper\Tests\Caster\DOMCasterTest" classname="Symfony.Component.VarDumper.Tests.Caster.DOMCasterTest" assertions="0" time="0.001032">
--
<error type="TypeError">Symfony\Component\VarDumper\Tests\Caster\DOMCasterTest::testCastModernDocumentType
TypeError: Cannot assign DOMNodeList to property Dom\Node::$childNodes of type Dom\NodeList
 
/home/runner/work/php-latest-builds/php-latest-builds/src/Symfony/Component/VarDumper/Caster/DOMCaster.php:190
/home/runner/work/php-latest-builds/php-latest-builds/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php:379
/home/runner/work/php-latest-builds/php-latest-builds/src/Symfony/Component/VarDumper/Cloner/VarCloner.php:127
/home/runner/work/php-latest-builds/php-latest-builds/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php:318
/home/runner/work/php-latest-builds/php-latest-builds/src/Symfony/Component/VarDumper/Test/VarDumperTestTrait.php:79
/home/runner/work/php-latest-builds/php-latest-builds/src/Symfony/Component/VarDumper/Test/VarDumperTestTrait.php:63
/home/runner/work/php-latest-builds/php-latest-builds/src/Symfony/Component/VarDumper/Tests/Caster/DOMCasterTest.php:235
/home/runner/work/php-latest-builds/php-latest-builds/.phpunit/phpunit-12-0/phpunit:104
/home/runner/work/php-latest-builds/php-latest-builds/vendor/symfony/phpunit-bridge/bin/simple-phpunit.php:458
/home/runner/work/php-latest-builds/php-latest-builds/vendor/symfony/phpunit-bridge/bin/simple-phpunit:13</error>
</testcase>

[YuF-9468]

Hi @dorny, I would like to work on fixing this issue. The problem is that when the PHPUnit XML output does not have a message attribute on the <error> or <failure> element, the parser does not extract a message from the error content text. I will implement a fix that falls back to using the first line of the error details as the message when the message attribute is not present.