public function testApiOutput_ReturnsRouterOutputBus()
{
$channel = $this->createChannel();
$output = $this->getMock(Router::class, [], [], '', false);
$router = $this->createRouter(['getBus']);
$router->expects($this->once())->method('getBus')->with('output')->will($this->returnValue($output));
$this->assertSame($output, $channel->getOutput());
}