[Backport] Added unit test for newsletter problem model

app/code/Magento/Newsletter/Test/Unit/Model/ProblemTest.php

@@ -0,0 +1,198 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\Newsletter\Test\Unit\Model;
+
+use Magento\Framework\Data\Collection\AbstractDb;
+use Magento\Framework\Model\Context;
+use Magento\Framework\Registry;
+use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
+use Magento\Newsletter\Model\Problem as ProblemModel;
+use Magento\Newsletter\Model\Queue;
+use Magento\Newsletter\Model\ResourceModel\Problem as ProblemResource;
+use Magento\Newsletter\Model\Subscriber;
+use Magento\Newsletter\Model\SubscriberFactory;
+
+class ProblemTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @var Context|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $contextMock;
+
+    /**
+     * @var Registry|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $registryMock;
+
+    /**
+     * @var SubscriberFactory|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $subscriberFactoryMock;
+
+    /**
+     * @var Subscriber|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $subscriberMock;
+
+    /**
+     * @var ProblemResource|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $resourceModelMock;
+
+    /**
+     * @var AbstractDb|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $abstractDbMock;
+
+    /**
+     * @var ObjectManager
+     */
+    protected $objectManager;
+
+    /**
+     * @var ProblemModel
+     */
+    private $problemModel;
+
+    protected function setUp()
+    {
+        $this->contextMock = $this->getMockBuilder(Context::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $this->registryMock = $this->getMockBuilder(Registry::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $this->subscriberFactoryMock = $this->getMockBuilder(SubscriberFactory::class)
+            ->getMock();
+        $this->subscriberMock = $this->getMockBuilder(Subscriber::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $this->resourceModelMock = $this->getMockBuilder(ProblemResource::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $this->abstractDbMock = $this->getMockBuilder(AbstractDb::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $this->resourceModelMock->expects($this->any())
+            ->method('getIdFieldName')
+            ->willReturn('id');
+
+        $this->objectManager = new ObjectManager($this);
+
+        $this->problemModel = $this->objectManager->getObject(
+            ProblemModel::class,
+            [
+                'context' => $this->contextMock,
+                'registry' => $this->registryMock,
+                'subscriberFactory' => $this->subscriberFactoryMock,
+                'resource' => $this->resourceModelMock,
+                'resourceCollection' => $this->abstractDbMock,
+                'data' => [],
+            ]
+        );
+    }
+
+    public function testAddSubscriberData()
+    {
+        $subscriberId = 1;
+        $this->subscriberMock->expects($this->once())
+            ->method('getId')
+            ->willReturn($subscriberId);
+
+        $result = $this->problemModel->addSubscriberData($this->subscriberMock);
+
+        self::assertEquals($result, $this->problemModel);
+        self::assertEquals($subscriberId, $this->problemModel->getSubscriberId());
+    }
+
+    public function testAddQueueData()
+    {
+        $queueId = 1;
+        $queueMock =  $this->getMockBuilder(Queue::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $queueMock->expects($this->once())
+            ->method('getId')
+            ->willReturn($queueId);
+
+        $result = $this->problemModel->addQueueData($queueMock);
+
+        self::assertEquals($result, $this->problemModel);
+        self::assertEquals($queueId, $this->problemModel->getQueueId());
+    }
+
+    public function testAddErrorData()
+    {
+        $exceptionMessage = 'Some message';
+        $exceptionCode = 111;
+        $exception = new \Exception($exceptionMessage, $exceptionCode);
+
+        $result = $this->problemModel->addErrorData($exception);
+
+        self::assertEquals($result, $this->problemModel);
+        self::assertEquals($exceptionMessage, $this->problemModel->getProblemErrorText());
+        self::assertEquals($exceptionCode, $this->problemModel->getProblemErrorCode());
+    }
+
+    public function testGetSubscriberWithNoSubscriberId()
+    {
+        self::assertNull($this->problemModel->getSubscriber());
+    }
+
+    public function testGetSubscriber()
+    {
+        $this->setSubscriber();
+        self::assertEquals($this->subscriberMock, $this->problemModel->getSubscriber());
+    }
+
+    public function testUnsubscribeWithNoSubscriber()
+    {
+        $this->subscriberMock->expects($this->never())
+            ->method('__call')
+            ->with($this->equalTo('setSubscriberStatus'));
+
+        $result = $this->problemModel->unsubscribe();
+
+        self::assertEquals($this->problemModel, $result);
+    }
+
+    public function testUnsubscribe()
+    {
+        $this->setSubscriber();
+        $this->subscriberMock->expects($this->at(1))
+            ->method('__call')
+            ->with($this->equalTo('setSubscriberStatus'), $this->equalTo([Subscriber::STATUS_UNSUBSCRIBED]))
+            ->willReturnSelf();
+        $this->subscriberMock->expects($this->at(2))
+            ->method('__call')
+            ->with($this->equalTo('setIsStatusChanged'))
+            ->willReturnSelf();
+        $this->subscriberMock->expects($this->once())
+            ->method('save');
+
+        $result = $this->problemModel->unsubscribe();
+
+        self::assertEquals($this->problemModel, $result);
+    }
+
+    /**
+     * Sets subscriber to the Problem model
+     */
+    private function setSubscriber()
+    {
+        $subscriberId = 1;
+        $this->problemModel->setSubscriberId($subscriberId);
+        $this->subscriberFactoryMock->expects($this->once())
+            ->method('create')
+            ->willReturn($this->subscriberMock);
+        $this->subscriberMock->expects($this->once())
+            ->method('load')
+            ->with($subscriberId)
+            ->willReturnSelf();
+    }
+}