Neos\Flow\Tests\Unit\Log\Backend\FileBackendTest::appendIgnoresMessagesAboveTheSeverityThreshold PHP Method

    public function appendIgnoresMessagesAboveTheSeverityThreshold()
    {
        $logFileUrl = vfsStream::url('testDirectory') . '/test.log';
        $backend = new FileBackend(['logFileUrl' => $logFileUrl]);
        $backend->setSeverityThreshold(LOG_EMERG);
        $backend->open();
        $backend->append('foo', LOG_INFO);
        $this->assertSame(0, vfsStreamWrapper::getRoot()->getChild('test.log')->size());
    }