public function testRenderHeaderIfNotSilent()
{
$logger = $this->createMock(\Monolog\Logger::class);
$this->object->setLogger($logger);
$header = ['TestData to be renderd into the Header'];
$this->object->setSilent(false);
self::assertSame($this->object, $this->object->renderHeader($header));
self::assertSame(';;; TestData to be renderd into the Header' . PHP_EOL . PHP_EOL, file_get_contents($this->file));
}