AttributeTypeResolverTest.php

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<?php
namespace Magento\Framework\Reflection\Test\Unit;

use \Magento\Framework\Reflection\AttributeTypeResolver;

class AttributeTypeResolverTest extends \PHPUnit\Framework\TestCase
{
    protected $model;

    protected $typeProcessor;

    protected $configMock;

    protected function setUp()
    {
        $this->typeProcessor = $this->createMock(\Magento\Framework\Reflection\TypeProcessor::class);
        $this->configMock = $this->createMock(\Magento\Framework\Api\ExtensionAttribute\Config::class);
        $this->model = new AttributeTypeResolver($this->typeProcessor, $this->configMock);
    }

    public function testResolveObjectTypeWithNonObjectValue()
    {
        $code = 'some_code';
        $value = 'string';
        $context = 'Some\Class';
        $this->model->resolveObjectType($code, $value, $context);
    }

    public function testResolveObjectTypeWithoutConfiguredAttribute()
    {
        $code = 'some_code';
        $value = new \stdClass();
        $context = 'Some\Class';

        $this->configMock->expects($this->once())->method('get')->willReturn([]);
        $this->assertEquals('stdClass', $this->model->resolveObjectType($code, $value, $context));
    }

    public function testResolveObjectTypeWithConfiguredAttribute()
    {
        $code = 'some_code';
        $value = new \stdClass();
        $context = '\Some\Class';
        $config = [
            'Some\Class' => [
                'some_code' => [
                    'type' => \Magento\Framework\DataObject::class,
                ],
            ]
        ];

        $this->typeProcessor->expects($this->once())
            ->method('getArrayItemType')
            ->with(\Magento\Framework\DataObject::class)
            ->willReturn(\Magento\Framework\DataObject::class);

        $this->configMock->expects($this->once())->method('get')->willReturn($config);
        $this->assertEquals(
            \Magento\Framework\DataObject::class,
            $this->model->resolveObjectType($code, $value, $context)
        );
    }

    public function testResolveObjectTypeWithConfiguredAttributeAndNonExistedClass()
    {
        $code = 'some_code';
        $value = new \stdClass();
        $context = '\Some\Class';
        $config = [
            'Some\Class' => [
                'some_code' => [
                    'type' => '\Some\Class',
                ]
            ]
        ];

        $this->typeProcessor->expects($this->once())
            ->method('getArrayItemType')
            ->with('\Some\Class')
            ->willReturn('\Some\Class');

        $this->configMock->expects($this->once())->method('get')->willReturn($config);
        $this->model->resolveObjectType($code, $value, $context);

        $this->expectExceptionMessage(
            'The "\Some\Class" class doesn\'t exist and the namespace must be specified. Verify and try again.'
        );
    }
}