The current test is set up to run only on the testbot that uses run-tests.sh.
Local usage of PHPUnit results in: No tests get executed
martin@martin-XPS-13-9370 /var/www/html/brown.localhost $ sudo -u www-data ./vendor/bin/phpunit -c ./web/core ./web/modules/contrib/openapi_rest --debug --printer="\Drupal\Tests\Listeners\HtmlOutputPrinter"
PHPUnit 7.5.20 by Sebastian Bergmann and contributors.
Time: 220 ms, Memory: 6.00 MB
No tests executed!Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.
This looks good to me. Just ran into a similar issue elsewhere.
Closing as a duplicate of 📌 Automated Drupal 11 compatibility fixes for openapi_rest Active , which fixed this.