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Covering the CouponCodeValidation class by Unit Tests
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‎app/code/Magento/SalesRule/Test/Unit/Observer/CouponCodeValidationTest.php

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<?php
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/**
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* Copyright © Magento, Inc. All rights reserved.
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* See COPYING.txt for license details.
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*/
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declare(strict_types=1);
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namespace Magento\SalesRule\Test\Unit\Observer;
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use Magento\Framework\Api\SearchCriteria;
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use Magento\Framework\Api\SearchCriteriaBuilder;
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use Magento\Framework\DataObject;
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use Magento\Framework\Event\Observer;
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use Magento\Quote\Api\CartRepositoryInterface;
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use Magento\Quote\Model\Quote;
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use Magento\SalesRule\Api\Exception\CodeRequestLimitException;
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use Magento\SalesRule\Model\Spi\CodeLimitManagerInterface;
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use Magento\SalesRule\Observer\CouponCodeValidation;
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use PHPUnit\Framework\TestCase;
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use PHPUnit_Framework_MockObject_MockObject;
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/**
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* Class CouponCodeValidationTest
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*/
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class CouponCodeValidationTest extends TestCase
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{
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/**
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* @var CouponCodeValidation
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*/
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private $couponCodeValidation;
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/**
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* @var PHPUnit_Framework_MockObject_MockObject|CodeLimitManagerInterface
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*/
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private $codeLimitManagerMock;
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/**
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* @var PHPUnit_Framework_MockObject_MockObject|CartRepositoryInterface
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*/
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private $cartRepositoryMock;
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/**
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* @var PHPUnit_Framework_MockObject_MockObject|SearchCriteriaBuilder
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*/
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private $searchCriteriaBuilderMock;
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/**
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* @var PHPUnit_Framework_MockObject_MockObject|Observer
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*/
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private $observerMock;
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/**
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* @var PHPUnit_Framework_MockObject_MockObject
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*/
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private $searchCriteriaMock;
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/**
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* @var PHPUnit_Framework_MockObject_MockObject
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*/
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private $quoteMock;
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/**
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* Set Up
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*/
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protected function setUp()
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{
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$this->codeLimitManagerMock = $this->createMock(CodeLimitManagerInterface::class);
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$this->observerMock = $this->createMock(Observer::class);
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$this->searchCriteriaMock = $this->getMockBuilder(SearchCriteria::class)
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->disableOriginalConstructor()->getMockForAbstractClass();
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$this->cartRepositoryMock = $this->getMockBuilder(CartRepositoryInterface::class)
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->setMethods(['getItems'])
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->disableOriginalConstructor()->getMockForAbstractClass();
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$this->searchCriteriaBuilderMock = $this->getMockBuilder(SearchCriteriaBuilder::class)
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->setMethods(['addFilter', 'create'])
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->disableOriginalConstructor()->getMockForAbstractClass();
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$this->quoteMock = $this->createPartialMock(Quote::class, [
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'getCouponCode', 'setCouponCode', 'getId'
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]);
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$this->couponCodeValidation = new CouponCodeValidation(
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$this->codeLimitManagerMock,
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$this->cartRepositoryMock,
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$this->searchCriteriaBuilderMock
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);
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}
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/**
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* Testing the coupon code that haven't reached the request limit
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*/
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public function testCouponCodeNotReachedTheLimit()
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{
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$couponCode = 'AB123';
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$this->observerMock->expects($this->once())->method('getData')->with('quote')
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->willReturn($this->quoteMock);
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$this->quoteMock->expects($this->once())->method('getCouponCode')->willReturn($couponCode);
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$this->searchCriteriaBuilderMock->expects($this->once())->method('addFilter')->willReturnSelf();
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$this->searchCriteriaBuilderMock->expects($this->once())->method('create')
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->willReturn($this->searchCriteriaMock);
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$this->quoteMock->expects($this->once())->method('getId')->willReturn(123);
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$this->cartRepositoryMock->expects($this->any())->method('getList')->willReturnSelf();
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$this->cartRepositoryMock->expects($this->any())->method('getItems')->willReturn([]);
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$this->codeLimitManagerMock->expects($this->once())->method('checkRequest')->with($couponCode);
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$this->quoteMock->expects($this->never())->method('setCouponCode')->with('');
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$this->couponCodeValidation->execute($this->observerMock);
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}
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/**
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* Testing with the changed coupon code
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*/
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public function testCouponCodeNotReachedTheLimitWithNewCouponCode()
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{
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$couponCode = 'AB123';
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$newCouponCode = 'AB234';
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$this->observerMock->expects($this->once())->method('getData')->with('quote')
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->willReturn($this->quoteMock);
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$this->quoteMock->expects($this->once())->method('getCouponCode')->willReturn($couponCode);
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$this->searchCriteriaBuilderMock->expects($this->once())->method('addFilter')->willReturnSelf();
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$this->searchCriteriaBuilderMock->expects($this->once())->method('create')
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->willReturn($this->searchCriteriaMock);
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$this->quoteMock->expects($this->once())->method('getId')->willReturn(123);
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$this->cartRepositoryMock->expects($this->any())->method('getList')->willReturnSelf();
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$this->cartRepositoryMock->expects($this->any())->method('getItems')
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->willReturn([new DataObject(['coupon_code' => $newCouponCode])]);
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$this->codeLimitManagerMock->expects($this->once())->method('checkRequest')->with($couponCode);
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$this->quoteMock->expects($this->never())->method('setCouponCode')->with('');
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$this->couponCodeValidation->execute($this->observerMock);
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}
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/**
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* Testing the coupon code that reached the request limit
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*
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* @expectedException \Magento\SalesRule\Api\Exception\CodeRequestLimitException
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* @expectedExceptionMessage Too many coupon code requests, please try again later.
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*/
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public function testReachingLimitForCouponCode()
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{
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$couponCode = 'AB123';
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$this->observerMock->expects($this->once())->method('getData')->with('quote')
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->willReturn($this->quoteMock);
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$this->quoteMock->expects($this->once())->method('getCouponCode')->willReturn($couponCode);
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$this->searchCriteriaBuilderMock->expects($this->once())->method('addFilter')->willReturnSelf();
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$this->searchCriteriaBuilderMock->expects($this->once())->method('create')
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->willReturn($this->searchCriteriaMock);
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$this->quoteMock->expects($this->once())->method('getId')->willReturn(123);
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$this->cartRepositoryMock->expects($this->any())->method('getList')->willReturnSelf();
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$this->cartRepositoryMock->expects($this->any())->method('getItems')->willReturn([]);
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$this->codeLimitManagerMock->expects($this->once())->method('checkRequest')->with($couponCode)
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->willThrowException(
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new CodeRequestLimitException(__('Too many coupon code requests, please try again later.'))
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);
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$this->quoteMock->expects($this->once())->method('setCouponCode')->with('');
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$this->couponCodeValidation->execute($this->observerMock);
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}
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/**
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* Testing the quote that doesn't have a coupon code set
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*/
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public function testQuoteWithNoCouponCode()
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{
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$couponCode = null;
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$this->observerMock->expects($this->once())->method('getData')->with('quote')
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->willReturn($this->quoteMock);
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$this->quoteMock->expects($this->once())->method('getCouponCode')->willReturn($couponCode);
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$this->quoteMock->expects($this->never())->method('getId')->willReturn(123);
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$this->quoteMock->expects($this->never())->method('setCouponCode')->with('');
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$this->couponCodeValidation->execute($this->observerMock);
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}
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}

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