Issue 35981: add unit test

Author: rogerdz

app/code/Magento/SalesRule/Model/Rule/Condition/Product/Combine.php

@@ -3,8 +3,6 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-declare(strict_types=1);
-
 namespace Magento\SalesRule\Model\Rule\Condition\Product;
 
 use Magento\Catalog\Model\ResourceModel\Product\Collection;

app/code/Magento/SalesRule/Test/Unit/Model/Rule/Condition/Product/CombineTest.php

@@ -0,0 +1,89 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\SalesRule\Test\Unit\Model\Rule\Condition\Product;
+
+use Magento\Rule\Model\Condition\Context;
+use Magento\SalesRule\Model\Rule\Condition\Product as SalesRuleProduct;
+use Magento\SalesRule\Model\Rule\Condition\Product\Combine;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+
+class CombineTest extends TestCase
+{
+    /**
+     * @var Combine
+     */
+    private $model;
+
+    /**
+     * @var SalesRuleProduct|MockObject
+     */
+    private $ruleConditionMock;
+
+    /**
+     * @inheritDoc
+     */
+    protected function setUp(): void
+    {
+        $contextMock = $this->getMockBuilder(Context::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $this->ruleConditionMock = $this->getMockBuilder(SalesRuleProduct::class)
+            ->setMethods(['loadAttributeOptions', 'getAttributeOption'])
+            ->disableOriginalConstructor()
+            ->getMock();
+        $this->model = new Combine(
+            $contextMock,
+            $this->ruleConditionMock,
+            []
+        );
+    }
+
+    /**
+     * @return void
+     */
+    public function testGetNewChildSelectOptions()
+    {
+        $this->ruleConditionMock->expects($this->any())
+            ->method('loadAttributeOptions')
+            ->willReturn($this->ruleConditionMock);
+        $this->ruleConditionMock->expects($this->any())
+            ->method('getAttributeOption')
+            ->willReturn([
+                'parent::quote_item_qty' => __('Quantity in cart'),
+                'name' => __('Name')
+            ]);
+        $this->assertEquals([
+            [
+                'value' => '',
+                'label' => __('Please choose a condition to add.')],
+            [
+                'value' => Combine::class,
+                'label' => __('Conditions Combination'),
+            ],
+            [
+                'label' => __('Cart Item Attribute'),
+                'value' => [
+                    [
+                        'value' => SalesRuleProduct::class . '|' . 'parent::quote_item_qty',
+                        'label' => __('Quantity in cart'),
+                    ]
+                ]
+            ],
+            [
+                'label' => __('Product Attribute'),
+                'value' => [
+                    [
+                        'value' => SalesRuleProduct::class . '|' . 'name',
+                        'label' => __('Name'),
+                    ]
+                ]
+            ]
+        ], $this->model->getNewChildSelectOptions());
+    }
+}