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<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
declare(strict_types=1);

/**
 * Test class for \Magento\Tax\Model\Config\TaxClass
 */
namespace Magento\Tax\Test\Unit\Model\Config;

use Magento\Eav\Model\Entity\Attribute;
use Magento\Eav\Model\Entity\AttributeFactory;
use Magento\Framework\Model\ResourceModel\Db\AbstractDb;
use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
use Magento\Tax\Model\Config\TaxClass;
use PHPUnit\Framework\TestCase;

class TaxClassTest extends TestCase
{
    /**
     * Tests the afterSave method indirectly
     */
    public function testAfterSave()
    {
        $attributeMock = $this->getMockBuilder(Attribute::class)
            ->disableOriginalConstructor()
            ->setMethods(['loadByCode', 'getId', 'setData', 'save', '__wakeup'])
            ->getMock();
        $attributeMock
            ->expects($this->any())
            ->method('getId')
            ->willReturn(1);

        $attributeFactoryMock = $this->getMockBuilder(AttributeFactory::class)
            ->disableOriginalConstructor()
            ->setMethods(['create', '__wakeup'])
            ->getMock();
        $attributeFactoryMock
            ->expects($this->any())
            ->method('create')
            ->willReturn($attributeMock);

        $resourceMock = $this->getMockBuilder(AbstractDb::class)
            ->disableOriginalConstructor()
            ->setMethods(['beginTransaction', '_construct', 'getIdFieldName', 'addCommitCallback', 'commit',
                'save', '__wakeup', ])
            ->getMock();
        $resourceMock
            ->expects($this->any())
            ->method('beginTransaction')
            ->willReturn(null);
        $resourceMock
            ->expects($this->any())
            ->method('getIdFieldName')
            ->willReturn('tax');
        $resourceMock
            ->expects($this->any())
            ->method('addCommitCallback')
            ->willReturn($resourceMock);

        $objectManager = new ObjectManager($this);
        $taxClass = $objectManager->getObject(
            TaxClass::class,
            [
                'resource' => $resourceMock,
                'attributeFactory' => $attributeFactoryMock
            ]
        );

        $taxClass->setDataChanges(true);

        // Save the tax config data which will call _aftersave() in tax and update the default product tax class
        // No assertion should be thrown
        $result = $taxClass->save();
        $this->assertNotNull($result);
    }
}