AppAreaTest.php

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<?php
namespace Magento\Test\Annotation;

use Magento\Framework\App\Area;

class AppAreaTest extends \PHPUnit\Framework\TestCase
{
    protected $_object;

    protected $_applicationMock;

    protected $_testCaseMock;

    protected function setUp()
    {
        $this->_testCaseMock = $this->createMock(\PHPUnit\Framework\TestCase::class);
        $this->_applicationMock = $this->createMock(\Magento\TestFramework\Application::class);
        $this->_object = new \Magento\TestFramework\Annotation\AppArea($this->_applicationMock);
    }

    public function testGetTestAppArea($annotations, $expectedArea)
    {
        $this->_testCaseMock->expects($this->once())->method('getAnnotations')->will($this->returnValue($annotations));
        $this->_applicationMock->expects($this->any())->method('getArea')->will($this->returnValue(null));
        $this->_applicationMock->expects($this->once())->method('reinitialize');
        $this->_applicationMock->expects($this->once())->method('loadArea')->with($expectedArea);
        $this->_object->startTest($this->_testCaseMock);
    }

    public function getTestAppAreaDataProvider()
    {
        return [
            'method scope' => [['method' => ['magentoAppArea' => ['adminhtml']]], 'adminhtml'],
            'class scope' => [['class' => ['magentoAppArea' => ['frontend']]], 'frontend'],
            'mixed scope' => [
                [
                    'class' => ['magentoAppArea' => ['adminhtml']],
                    'method' => ['magentoAppArea' => ['frontend']],
                ],
                'frontend',
            ],
            'default area' => [[], 'global']
        ];
    }

    public function testGetTestAppAreaWithInvalidArea()
    {
        $annotations = ['method' => ['magentoAppArea' => ['some_invalid_area']]];
        $this->_testCaseMock->expects($this->once())->method('getAnnotations')->will($this->returnValue($annotations));
        $this->_object->startTest($this->_testCaseMock);
    }

    public function testStartTestWithDifferentAreaCodes(string $areaCode)
    {
        $annotations = ['method' => ['magentoAppArea' => [$areaCode]]];
        $this->_testCaseMock->expects($this->once())->method('getAnnotations')->will($this->returnValue($annotations));
        $this->_applicationMock->expects($this->any())->method('getArea')->willReturn(null);
        $this->_applicationMock->expects($this->once())->method('reinitialize');
        $this->_applicationMock->expects($this->once())->method('loadArea')->with($areaCode);
        $this->_object->startTest($this->_testCaseMock);
    }

    public function testStartTestPreventDoubleAreaLoadingAfterReinitialization()
    {
        $annotations = ['method' => ['magentoAppArea' => ['global']]];
        $this->_testCaseMock->expects($this->once())->method('getAnnotations')->will($this->returnValue($annotations));
        $this->_applicationMock->expects($this->at(0))->method('getArea')->will($this->returnValue('adminhtml'));
        $this->_applicationMock->expects($this->once())->method('reinitialize');
        $this->_applicationMock->expects($this->at(2))->method('getArea')->will($this->returnValue('global'));
        $this->_applicationMock->expects($this->never())->method('loadArea');
        $this->_object->startTest($this->_testCaseMock);
    }

    public function testStartTestPreventDoubleAreaLoading()
    {
        $annotations = ['method' => ['magentoAppArea' => ['adminhtml']]];
        $this->_testCaseMock->expects($this->once())->method('getAnnotations')->will($this->returnValue($annotations));
        $this->_applicationMock->expects($this->once())->method('getArea')->will($this->returnValue('adminhtml'));
        $this->_applicationMock->expects($this->never())->method('reinitialize');
        $this->_applicationMock->expects($this->never())->method('loadArea');
        $this->_object->startTest($this->_testCaseMock);
    }

    public function startTestWithDifferentAreaCodes()
    {
        return [
            [
                'area_code' => Area::AREA_GLOBAL,
            ],
            [
                'area_code' => Area::AREA_ADMINHTML,
            ],
            [
                'area_code' => Area::AREA_FRONTEND,
            ],
            [
                'area_code' => Area::AREA_WEBAPI_REST,
            ],
            [
                'area_code' => Area::AREA_WEBAPI_SOAP,
            ],
            [
                'area_code' => Area::AREA_CRONTAB,
            ],
            [
                'area_code' => Area::AREA_GRAPHQL,
            ],
        ];
    }
}