public function testExecuteNoOrder()
{
$orderId = 1;
$invoiceData = [];
$this->requestMock->expects($this->at(0))
->method('getParam')
->with('order_id')
->will($this->returnValue($orderId));
$this->requestMock->expects($this->at(1))
->method('getParam')
->with('invoice', [])
->will($this->returnValue($invoiceData));
$orderMock = $this->getMockBuilder('Magento\Sales\Model\Order')
->disableOriginalConstructor()
->setMethods(['load', 'getId', 'canInvoice'])
->getMock();
$orderMock->expects($this->once())
->method('load')
->with($orderId)
->willReturnSelf();
$orderMock->expects($this->once())
->method('getId')
->willReturn(null);
$this->objectManagerMock->expects($this->at(0))
->method('create')
->with('Magento\Sales\Model\Order')
->willReturn($orderMock);
$resultRedirect = $this->getMockBuilder('Magento\Backend\Model\View\Result\Redirect')
->disableOriginalConstructor()
->setMethods([])
->getMock();
$resultRedirect->expects($this->once())->method('setPath')->with('sales/order/view', ['order_id' => $orderId]);
$this->resultRedirectFactoryMock->expects($this->once())
->method('create')
->will($this->returnValue($resultRedirect));
$this->assertSame($resultRedirect, $this->controller->executeInternal());
}