CancelTest.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

namespace Magento\Sales\Test\Unit\Controller\Adminhtml\Order;

use Magento\Framework\App\Action\Context;
use Magento\Framework\TestFramework\Unit\Helper\ObjectManager as ObjectManagerHelper;

/**
 * Class CancelTest
 *
 * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
 */
class CancelTest extends \PHPUnit\Framework\TestCase
{
    /**
     * @var \Magento\Sales\Controller\Adminhtml\Order\Cancel
     */
    protected $controller;

    /**
     * @var Context|\PHPUnit_Framework_MockObject_MockObject
     */
    protected $context;

    /**
     * @var \Magento\Backend\Model\View\Result\Redirect|\PHPUnit_Framework_MockObject_MockObject
     */
    protected $resultRedirect;

    /**
     * @var \Magento\Framework\App\Request\Http|\PHPUnit_Framework_MockObject_MockObject
     */
    protected $request;

    /**
     * @var \Magento\Framework\App\ResponseInterface|\PHPUnit_Framework_MockObject_MockObject
     */
    protected $response;

    /**
     * @var \Magento\Framework\Message\Manager|\PHPUnit_Framework_MockObject_MockObject
     */
    protected $messageManager;

    /**
     * @var \Magento\Sales\Api\OrderRepositoryInterface
     */
    protected $orderRepositoryMock;

    /**
     * @var \PHPUnit_Framework_MockObject_MockObject
     */
    protected $validatorMock;

    /**
     * @var \Magento\Framework\ObjectManager\ObjectManager|\PHPUnit_Framework_MockObject_MockObject
     */
    protected $objectManager;

    /**
     * Test setup
     */
    protected function setUp()
    {
        $objectManagerHelper = new ObjectManagerHelper($this);
        $this->context = $this->createMock(\Magento\Backend\App\Action\Context::class);
        $resultRedirectFactory = $this->createPartialMock(
            \Magento\Backend\Model\View\Result\RedirectFactory::class,
            ['create']
        );
        $this->response = $this->createPartialMock(
            \Magento\Framework\App\ResponseInterface::class,
            ['setRedirect', 'sendResponse']
        );
        $this->request = $this->getMockBuilder(\Magento\Framework\App\Request\Http::class)
            ->disableOriginalConstructor()->getMock();
        $this->messageManager = $this->createPartialMock(
            \Magento\Framework\Message\Manager::class,
            ['addSuccessMessage', 'addErrorMessage']
        );
        $this->orderRepositoryMock = $this->getMockBuilder(\Magento\Sales\Api\OrderRepositoryInterface::class)
            ->disableOriginalConstructor()
            ->getMock();

        $this->validatorMock = $this->getMockBuilder(\Magento\Framework\Data\Form\FormKey\Validator::class)
            ->disableOriginalConstructor()
            ->getMock();

        $this->resultRedirect = $this->createMock(\Magento\Backend\Model\View\Result\Redirect::class);
        $resultRedirectFactory->expects($this->any())->method('create')->willReturn($this->resultRedirect);

        $this->context->expects($this->once())->method('getMessageManager')->willReturn($this->messageManager);
        $this->context->expects($this->any())->method('getRequest')->willReturn($this->request);
        $this->context->expects($this->once())->method('getResponse')->willReturn($this->response);
        $this->context->expects($this->once())->method('getObjectManager')->willReturn($this->objectManager);
        $this->context->expects($this->once())->method('getResultRedirectFactory')->willReturn($resultRedirectFactory);
        $this->context->expects($this->once())->method('getFormKeyValidator')->willReturn($this->validatorMock);

        $this->controller = $objectManagerHelper->getObject(
            \Magento\Sales\Controller\Adminhtml\Order\Cancel::class,
            [
                'context' => $this->context,
                'request' => $this->request,
                'response' => $this->response,
                'orderRepository' => $this->orderRepositoryMock
            ]
        );
    }

    /**
     * testExecuteNotPost
     */
    public function testExecuteNotPost()
    {
        $this->validatorMock->expects($this->once())
            ->method('validate')
            ->willReturn(false);
        $this->request->expects($this->once())
            ->method('isPost')
            ->willReturn(false);
        $this->messageManager->expects($this->once())
            ->method('addErrorMessage')
            ->with('You have not canceled the item.');
        $this->resultRedirect->expects($this->once())
            ->method('setPath')
            ->with('sales/*/')
            ->willReturnSelf();

        $this->assertEquals($this->resultRedirect, $this->controller->execute());
    }
}