[Backend] Cover Dashboard Helper Data by Unit Test

Author: edenduong

app/code/Magento/Backend/Test/Unit/Helper/Dashboard/DataTest.php

@@ -0,0 +1,111 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+declare(strict_types=1);
+
+namespace Magento\Backend\Test\Unit\Helper\Dashboard;
+
+use Magento\Backend\Helper\Dashboard\Data as HelperData;
+use Magento\Framework\App\DeploymentConfig;
+use Magento\Framework\Config\ConfigOptionsListConstants;
+use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
+use Magento\Store\Model\ResourceModel\Store\Collection as StoreCollection;
+use Magento\Store\Model\Store;
+use Magento\Store\Model\StoreManagerInterface;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+
+class DataTest extends TestCase
+{
+    /**
+     * Stub path install
+     */
+    private const STUB_PATH_INSTALL = 'Sat, 6 Sep 2014 16:46:11 UTC';
+
+    /**
+     * Stub chart data hash
+     */
+    private const STUB_CHART_DATA_HASH = '52870842b23068a78220e01eb9d4404d';
+
+    /**
+     * @var \Magento\Backend\Helper\Dashboard\Data
+     */
+    private $helper;
+
+    /**
+     * @var StoreManagerInterface|MockObject
+     */
+    private $storeManagerMock;
+
+    /**
+     * @var DeploymentConfig|MockObject
+     */
+    private $deploymentConfigMock;
+
+    /**
+     * Prepare environment for test
+     */
+    protected function setUp()
+    {
+        $this->storeManagerMock = $this->createMock(StoreManagerInterface::class);
+        $this->deploymentConfigMock = $this->createMock(DeploymentConfig::class);
+        $this->deploymentConfigMock->expects($this->once())->method('get')
+            ->with(ConfigOptionsListConstants::CONFIG_PATH_INSTALL_DATE)
+            ->will($this->returnValue(self::STUB_PATH_INSTALL));
+
+        $objectManager = new ObjectManager($this);
+        $this->helper = $objectManager->getObject(
+            HelperData::class,
+            [
+                'storeManager' => $this->storeManagerMock,
+                'deploymentConfig' => $this->deploymentConfigMock
+            ]
+        );
+    }
+
+    /**
+     * Test getStores() when $_stores attribute is null
+     */
+    public function testGetStoresWhenStoreAttributeIsNull()
+    {
+        $storeMock = $this->createPartialMock(Store::class, ['getResourceCollection']);
+        $storeCollectionMock = $this->createMock(StoreCollection::class);
+
+        $storeCollectionMock->expects($this->once())->method('load')->willReturnSelf();
+        $storeMock->expects($this->once())->method('getResourceCollection')->willReturn($storeCollectionMock);
+        $this->storeManagerMock->expects($this->once())->method('getStore')->willReturn($storeMock);
+
+        $this->assertEquals($storeCollectionMock, $this->helper->getStores());
+    }
+
+    /**
+     * Test getDatePeriods() method
+     */
+    public function testGetDatePeriods()
+    {
+        $this->assertEquals(
+            [
+                '24h' => (string)__('Last 24 Hours'),
+                '7d' => (string)__('Last 7 Days'),
+                '1m' => (string)__('Current Month'),
+                '1y' => (string)__('YTD'),
+                '2y' => (string)__('2YTD')
+            ],
+            $this->helper->getDatePeriods()
+        );
+    }
+
+    /**
+     * Test getChartDataHash() method
+     */
+    public function testGetChartDataHash()
+    {
+        $this->assertEquals(
+            self::STUB_CHART_DATA_HASH,
+            $this->helper->getChartDataHash(self::STUB_PATH_INSTALL)
+        );
+    }
+}