public function createWriterTakesWriterInterfaceInArray()
{
/** @var \Plum\Plum\Writer\WriterInterface $writer */
$writer = Mockery::mock('\\Plum\\Plum\\Writer\\WriterInterface');
$pipe = WriterPipe::createWriter(['writer' => $writer]);
$this->assertInstanceOf('\\Plum\\Plum\\Pipe\\WriterPipe', $pipe);
$this->assertEquals($writer, $pipe->getWriter());
}