RuleTest.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\CatalogWidget\Test\Unit\Model;

class RuleTest extends \PHPUnit\Framework\TestCase
{
    /**
     * @var \Magento\Framework\TestFramework\Unit\Helper\ObjectManager
     */
    private $objectManager;

    /**
     * @var \Magento\CatalogWidget\Model\Rule
     */
    protected $rule;

    /**
     * @var \Magento\CatalogWidget\Model\Rule\Condition\CombineFactory|\PHPUnit_Framework_MockObject_MockObject
     */
    protected $combineFactory;

    protected function setUp()
    {
        $this->objectManager = new \Magento\Framework\TestFramework\Unit\Helper\ObjectManager($this);
        $this->combineFactory = $this->getMockBuilder(\Magento\CatalogWidget\Model\Rule\Condition\CombineFactory::class)
            ->setMethods(['create'])
            ->disableOriginalConstructor()
            ->getMock();

        $this->rule = $this->objectManager->getObject(
            \Magento\CatalogWidget\Model\Rule::class,
            [
                'conditionsFactory' => $this->combineFactory
            ]
        );
    }

    public function testGetConditionsInstance()
    {
        $condition = $this->getMockBuilder(\Magento\CatalogWidget\Model\Rule\Condition\Combine::class)
            ->setMethods([])
            ->disableOriginalConstructor()
            ->getMock();
        $this->combineFactory->expects($this->once())->method('create')->will($this->returnValue($condition));
        $this->assertSame($condition, $this->rule->getConditionsInstance());
    }

    public function testGetActionsInstance()
    {
        $this->assertNull($this->rule->getActionsInstance());
    }
}