public function requireOnceDoesNotSwallowPhpWarningsOfTheIncludedFile()
{
$entryIdentifier = 'SomePhpEntryWithPhpWarning';
$simpleFileBackend = $this->getSimpleFileBackend();
$simpleFileBackend->set($entryIdentifier, '<?php trigger_error("Warning!", E_WARNING); ?>');
$simpleFileBackend->requireOnce($entryIdentifier);
}