Upgrade rector tests fail on Drupal 9 due to magic class rewriting in core
>>> [!note] Migrated issue
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<!-- Migrated from issue #3132156. -->
Reported by: [gábor hojtsy](https://www.drupal.org/user/4166)
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>Parsing upgrade rector itself with upgrade rector fails on Drupal 9 due to the magic test base class rewriting that does not happen of course when rector is running:</p>
<pre>Rector v0.6.13<br>Config file: sites/simpletest/50726648/temp/upgrade_rector/upgrade_rector.yml<br><br> 0/27 [░░░░░░░░░░░░░░░░░░░░░░░░░░░░] 0%<br> 3/27 [▓▓▓░░░░░░░░░░░░░░░░░░░░░░░░░] 11%<br> 6/27 [▓▓▓▓▓▓░░░░░░░░░░░░░░░░░░░░░░] 22%PHP Fatal error: Declaration of Drupal\Tests\BrowserTestBase::setUp() must be compatible with PHPUnit\Framework\TestCase::setUp(): void in /var/www/html/core/tests/Drupal/Tests/BrowserTestBase.php on line 41<br>Fatal error: Declaration of Drupal\Tests\BrowserTestBase::setUp() must be compatible with PHPUnit\Framework\TestCase::setUp(): void in /var/www/html/core/tests/Drupal/Tests/BrowserTestBase.php on line 41</pre><p>Not sure how to fix this. The class rewriter is in <code>core/tests/Drupal/TestTools/PhpUnitCompatibility/PhpUnit8/ClassWriter.php</code> and was added in <span class="drupalorg-gitlab-issue-link project-issue-status-info project-issue-status-7"><a href="https://www.drupal.org/project/drupal/issues/3063887" title="Status: Closed (fixed)">#3063887: Support PHPUnit 8 in Drupal 9, drop support for PHPUnit 7</a></span>.</p>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<p>?</p>
<h3 id="summary-remaining-tasks">Remaining tasks</h3>
<h3 id="summary-ui-changes">User interface changes</h3>
<h3 id="summary-api-changes">API changes</h3>
<h3 id="summary-data-model-changes">Data model changes</h3>
<h3 id="summary-release-notes">Release notes snippet</h3>
issue
GitLab AI Context
Project: project/upgrade_rector
Instance: https://git.drupalcode.org
Repository: https://git.drupalcode.org/project/upgrade_rector
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