[Catalog] Cover Component/FilterFactory by Unit Test

Author: edenduong

app/code/Magento/Catalog/Test/Unit/Ui/Component/FilterFactoryTest.php

@@ -0,0 +1,100 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Catalog\Test\Unit\Ui\Component;
+
+use PHPUnit\Framework\TestCase;
+use Magento\Catalog\Ui\Component\FilterFactory;
+use Magento\Framework\TestFramework\Unit\Helper\ObjectManager as ObjectManagerHelper;
+use Magento\Framework\View\Element\UiComponentFactory;
+use Magento\Catalog\Api\Data\ProductAttributeInterface;
+use Magento\Eav\Model\Entity\Attribute\Source\SourceInterface;
+use Magento\Framework\View\Element\UiComponent\ContextInterface;
+
+class FilterFactoryTest extends TestCase
+{
+    /**
+     * @var FilterFactory
+     */
+    private $filterFactory;
+
+    /**
+     * @var UiComponentFactory|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $componentFactoryMock;
+
+    /**
+     * Setup environment for test
+     */
+    protected function setUp()
+    {
+        $objectManager = new ObjectManagerHelper($this);
+
+        $this->componentFactoryMock = $this->createMock(UiComponentFactory::class);
+
+        $this->filterFactory = $objectManager->getObject(
+            FilterFactory::class,
+            [
+                'componentFactory' => $this->componentFactoryMock
+            ]
+        );
+    }
+
+    /**
+     * Test create() with use source attribute
+     */
+    public function testCreateWithUseSourceAttribute()
+    {
+        $contextMock = $this->createMock(ContextInterface::class);
+        $attributeMock = $this->getMockBuilder(ProductAttributeInterface::class)
+            ->setMethods(['usesSource', 'getSource'])
+            ->getMockForAbstractClass();
+        $attributeMock->method('getAttributeCode')->willReturn('color');
+        $attributeMock->method('getDefaultFrontendLabel')->willReturn('Color');
+        $attributeMock->method('usesSource')->willReturn(true);
+        $attributeMock->method('getSourceModel')->willReturn('getSourceModel value');
+        $attributeMock->method('getFrontendInput')->willReturn('select');
+        $sourceMock = $this->createMock(SourceInterface::class);
+        $attributeMock->method('getSource')->willReturn($sourceMock);
+        $sourceMock->method('getAllOptions')->willReturn(
+            [
+                [
+                    'value' => 1,
+                    'label' => 'Black',
+                ],
+                [
+                    'value' => 2,
+                    'label' => 'White',
+                ]
+            ]
+        );
+        $this->componentFactoryMock->expects($this->once())
+            ->method('create')
+            ->with('color', 'filterSelect', [
+                'data' => [
+                    'config' => [
+                        'options' => [
+                            [
+                                'value' => 1,
+                                'label' => 'Black',
+                            ],
+                            [
+                                'value' => 2,
+                                'label' => 'White',
+                            ]
+                        ],
+                        'caption' => (string)__('Select...'),
+                        'dataScope' => 'color',
+                        'label' => (string)__('Color'),
+                    ]
+                ],
+                'context' => $contextMock
+            ]);
+
+        $this->filterFactory->create($attributeMock, $contextMock);
+    }
+}