SaveGoogleExperimentScriptObserverTest.php

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<?php
namespace Magento\GoogleOptimizer\Test\Unit\Observer\CmsPage;

class SaveGoogleExperimentScriptObserverTest extends \PHPUnit\Framework\TestCase
{
    protected $_helperMock;

    protected $_eventObserverMock;

    protected $_pageMock;

    protected $_codeMock;

    protected $_requestMock;

    protected $_modelObserver;

    protected $_storeId;

    protected function setUp()
    {
        $this->_helperMock = $this->createMock(\Magento\GoogleOptimizer\Helper\Data::class);
        $this->_codeMock = $this->createMock(\Magento\GoogleOptimizer\Model\Code::class);
        $this->_requestMock = $this->createMock(\Magento\Framework\App\RequestInterface::class);

        $this->_pageMock = $this->createMock(\Magento\Cms\Model\Page::class);
        $event = $this->createPartialMock(\Magento\Framework\Event::class, ['getObject']);
        $event->expects($this->once())->method('getObject')->will($this->returnValue($this->_pageMock));
        $this->_eventObserverMock = $this->createMock(\Magento\Framework\Event\Observer::class);
        $this->_eventObserverMock->expects($this->once())->method('getEvent')->will($this->returnValue($event));

        $objectManagerHelper = new \Magento\Framework\TestFramework\Unit\Helper\ObjectManager($this);
        $this->_modelObserver = $objectManagerHelper->getObject(
            \Magento\GoogleOptimizer\Observer\CmsPage\SaveGoogleExperimentScriptObserver::class,
            ['helper' => $this->_helperMock, 'modelCode' => $this->_codeMock, 'request' => $this->_requestMock]
        );
    }

    public function testCreatingCodeIfRequestIsValid()
    {
        $pageId = 3;
        $experimentScript = 'some string';

        $this->_pageMock->expects($this->once())->method('getId')->will($this->returnValue($pageId));
        $this->_helperMock->expects($this->once())->method('isGoogleExperimentActive')->will($this->returnValue(true));

        $this->_requestMock->expects(
            $this->exactly(3)
        )->method(
            'getParam'
        )->with(
            'google_experiment'
        )->will(
            $this->returnValue(['code_id' => '', 'experiment_script' => $experimentScript])
        );

        $this->_codeMock->expects(
            $this->once()
        )->method(
            'addData'
        )->with(
            [
                'entity_type' => \Magento\GoogleOptimizer\Model\Code::ENTITY_TYPE_PAGE,
                'entity_id' => $pageId,
                'store_id' => 0,
                'experiment_script' => $experimentScript,
            ]
        );
        $this->_codeMock->expects($this->once())->method('save');

        $this->_modelObserver->execute($this->_eventObserverMock);
    }

    public function testCreatingCodeIfRequestIsNotValid($params)
    {
        $this->_helperMock->expects($this->once())->method('isGoogleExperimentActive')->will($this->returnValue(true));

        $this->_requestMock->expects(
            $this->once()
        )->method(
            'getParam'
        )->with(
            'google_experiment'
        )->will(
            $this->returnValue($params)
        );

        $this->_modelObserver->execute($this->_eventObserverMock);
    }

    public function dataProviderWrongRequestForCreating()
    {
        return [
            // if param 'google_experiment' is not array
            ['wrong type'],
            // if param 'experiment_script' is missed
            [['code_id' => '']],
            // if param 'code_id' is missed
            [['experiment_script' => '']]];
    }

    public function testEditingCodeIfRequestIsValid()
    {
        $pageId = 3;
        $experimentScript = 'some string';
        $codeId = 5;

        $this->_pageMock->expects($this->once())->method('getId')->will($this->returnValue($pageId));
        $this->_helperMock->expects($this->once())->method('isGoogleExperimentActive')->will($this->returnValue(true));

        $this->_requestMock->expects(
            $this->exactly(3)
        )->method(
            'getParam'
        )->with(
            'google_experiment'
        )->will(
            $this->returnValue(['code_id' => $codeId, 'experiment_script' => $experimentScript])
        );

        $this->_codeMock->expects($this->once())->method('load')->with($codeId);
        $this->_codeMock->expects($this->once())->method('getId')->will($this->returnValue($codeId));

        $this->_codeMock->expects(
            $this->once()
        )->method(
            'addData'
        )->with(
            [
                'entity_type' => \Magento\GoogleOptimizer\Model\Code::ENTITY_TYPE_PAGE,
                'entity_id' => $pageId,
                'store_id' => $this->_storeId,
                'experiment_script' => $experimentScript,
            ]
        );
        $this->_codeMock->expects($this->once())->method('save');

        $this->_modelObserver->execute($this->_eventObserverMock);
    }

    public function testEditingCodeIfCodeModelIsNotFound()
    {
        $experimentScript = 'some string';
        $codeId = 5;

        $this->_helperMock->expects($this->once())->method('isGoogleExperimentActive')->will($this->returnValue(true));

        $this->_requestMock->expects(
            $this->exactly(3)
        )->method(
            'getParam'
        )->with(
            'google_experiment'
        )->will(
            $this->returnValue(['code_id' => $codeId, 'experiment_script' => $experimentScript])
        );

        $this->_codeMock->expects($this->once())->method('load')->with($codeId);
        $this->_codeMock->expects($this->atLeastOnce())->method('getId')->will($this->returnValue(false));
        $this->_codeMock->expects($this->never())->method('save');

        $this->_modelObserver->execute($this->_eventObserverMock);
    }

    public function testRemovingCode()
    {
        $codeId = 5;

        $this->_helperMock->expects(
            $this->once()
        )->method(
            'isGoogleExperimentActive'
        )->with(
            $this->_storeId
        )->will(
            $this->returnValue(true)
        );

        $this->_requestMock->expects(
            $this->exactly(3)
        )->method(
            'getParam'
        )->with(
            'google_experiment'
        )->will(
            $this->returnValue(['code_id' => $codeId, 'experiment_script' => ''])
        );

        $this->_codeMock->expects($this->once())->method('load')->with($codeId);
        $this->_codeMock->expects($this->once())->method('getId')->will($this->returnValue($codeId));

        $this->_codeMock->expects($this->never())->method('save');
        $this->_codeMock->expects($this->once())->method('delete');

        $this->_modelObserver->execute($this->_eventObserverMock);
    }

    public function testManagingCodeIfGoogleExperimentIsDisabled()
    {
        $this->_helperMock->expects(
            $this->once()
        )->method(
            'isGoogleExperimentActive'
        )->with(
            $this->_storeId
        )->will(
            $this->returnValue(false)
        );
        $this->_codeMock->expects($this->never())->method('load');
        $this->_codeMock->expects($this->never())->method('save');
        $this->_codeMock->expects($this->never())->method('delete');

        $this->_modelObserver->execute($this->_eventObserverMock);
    }
}