ENGCOM-6491: [Msrp] Cover MsrpPriceCalculator by Unit Test #26067

 - Merge Pull Request #26067 from edenduong/magento2:2.4-testcover/cover_msrp_price_calculator
 - Merged commits:
   1. 6ac1098
   2. fb7aa9c
   3. 2be8374

Author: magento-engcom-team

app/code/Magento/Msrp/Test/Unit/Pricing/MsrpPriceCalculatorTest.php

@@ -0,0 +1,103 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+declare(strict_types=1);
+
+namespace Magento\Msrp\Test\Unit\Pricing;
+
+use Magento\Catalog\Model\Product;
+use Magento\Catalog\Model\Product\Type as ProductType;
+use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
+use Magento\GroupedProduct\Model\Product\Type\Grouped as GroupedType;
+use Magento\Msrp\Pricing\MsrpPriceCalculator;
+use Magento\MsrpGroupedProduct\Pricing\MsrpPriceCalculator as MsrpGroupedCalculator;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+
+class MsrpPriceCalculatorTest extends TestCase
+{
+    /**
+     * @var MsrpPriceCalculator
+     */
+    private $pricing;
+
+    /**
+     * @var MsrpGroupedCalculator|MockObject
+     */
+    private $msrpGroupedCalculatorMock;
+
+    /**
+     * Prepare environment to test
+     */
+    protected function setUp()
+    {
+        $objectManager = new ObjectManager($this);
+        $this->msrpGroupedCalculatorMock = $this->createMock(MsrpGroupedCalculator::class);
+        $this->pricing = $objectManager->getObject(
+            MsrpPriceCalculator::class,
+            [
+                'msrpPriceCalculators' => [
+                    [
+                        'productType' => GroupedType::TYPE_CODE,
+                        'priceCalculator' => $this->msrpGroupedCalculatorMock
+                    ]
+                ]
+            ]
+        );
+    }
+
+    /**
+     * Test getMrspPriceValue() with the data provider below
+     *
+     * @param array $msrpPriceCalculators
+     * @param Product $productMock
+     * @param float $expected
+     * @dataProvider getMsrpPriceValueDataProvider
+     */
+    public function testGetMsrpPriceValue($msrpPriceCalculatorPrice, $productMock, $expected)
+    {
+        $this->msrpGroupedCalculatorMock->expects($this->any())
+            ->method('getMsrpPriceValue')->willReturn($msrpPriceCalculatorPrice);
+
+        $this->assertEquals($expected, $this->pricing->getMsrpPriceValue($productMock));
+    }
+
+    /**
+     * Data Provider for test getMrspPriceValue()
+     *
+     * @return array
+     */
+    public function getMsrpPriceValueDataProvider()
+    {
+        return [
+            'Get Mrsp Price with product and msrp calculator and the same product type' => [
+                23.50,
+                $this->createProductMock(GroupedType::TYPE_CODE, 0),
+                23.50
+            ],
+            'Get Mrsp Price with product and msrp calculator and the different product type' => [
+                24.88,
+                $this->createProductMock(ProductType::TYPE_SIMPLE, 24.88),
+                24.88
+            ]
+        ];
+    }
+
+    /**
+     * Create Product Mock
+     *
+     * @param string $typeId
+     * @param float $msrp
+     * @return MockObject
+     */
+    private function createProductMock($typeId, $msrp)
+    {
+        $productMock = $this->createPartialMock(Product::class, ['getTypeId', 'getMsrp']);
+        $productMock->expects($this->any())->method('getTypeId')->willReturn($typeId);
+        $productMock->expects($this->any())->method('getMsrp')->willReturn($msrp);
+        return $productMock;
+    }
+}