[Backend] Cover action admin/dashboard/ajaxBlock by Integration Test

Author: edenduong

dev/tests/integration/testsuite/Magento/Backend/Controller/Adminhtml/Dashboard/AjaxBlockTest.php

@@ -0,0 +1,69 @@
+<?php
+/**
+ *
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+declare(strict_types=1);
+
+namespace Magento\Backend\Controller\Adminhtml\Dashboard;
+
+use Magento\TestFramework\TestCase\AbstractBackendController;
+use Magento\Framework\App\Request\Http as HttpRequest;
+
+/**
+ * @magentoAppArea adminhtml
+ */
+class AjaxBlockTest extends AbstractBackendController
+{
+    /**
+     * Test execute to check render block
+     *
+     * @dataProvider ajaxBlockDataProvider
+     */
+    public function testExecute($block, $expectedResult)
+    {
+        $this->getRequest()->setMethod(HttpRequest::METHOD_POST);
+        $this->getRequest()->setParam('block', $block);
+
+        $this->dispatch('backend/admin/dashboard/ajaxBlock/');
+
+        $this->assertEquals(200, $this->getResponse()->getHttpResponseCode());
+
+        $actual = $this->getResponse()->getBody();
+
+        $this->assertContains($expectedResult, $actual);
+    }
+
+    /**
+     * Provides POST data and Expected Result
+     *
+     * @return array
+     */
+    public function ajaxBlockDataProvider()
+    {
+        return [
+            [
+                'tab_orders',
+                'order_orders_period'
+            ],
+            [
+                'tab_amounts',
+                'order_amounts_period'
+            ],
+            [
+                'totals',
+                'dashboard_diagram_totals'
+            ],
+            [
+                '',
+                ''
+            ],
+            [
+                'test_block',
+                ''
+            ]
+        ];
+    }
+}