diff --git a/app/code/Magento/Analytics/Block/Adminhtml/System/Config/CollectionTimeLabel.php b/app/code/Magento/Analytics/Block/Adminhtml/System/Config/CollectionTimeLabel.php
index 34f2b7d53d9be..664278debd655 100644
--- a/app/code/Magento/Analytics/Block/Adminhtml/System/Config/CollectionTimeLabel.php
+++ b/app/code/Magento/Analytics/Block/Adminhtml/System/Config/CollectionTimeLabel.php
@@ -3,42 +3,47 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+declare(strict_types=1);
+
 namespace Magento\Analytics\Block\Adminhtml\System\Config;
 
-use Magento\Framework\App\ObjectManager;
+use Magento\Backend\Block\Template\Context;
+use Magento\Config\Block\System\Config\Form\Field;
+use Magento\Framework\Data\Form\Element\AbstractElement;
+use Magento\Framework\Locale\ResolverInterface;
 
 /**
  * Provides label with default Time Zone
  */
-class CollectionTimeLabel extends \Magento\Config\Block\System\Config\Form\Field
+class CollectionTimeLabel extends Field
 {
     /**
-     * @var \Magento\Framework\Locale\ResolverInterface
+     * @var ResolverInterface
      */
     private $localeResolver;
 
     /**
-     * @param \Magento\Backend\Block\Template\Context $context
+     * @param Context $context
+     * @param ResolverInterface $localeResolver
      * @param array $data
-     * @param \Magento\Framework\Locale\ResolverInterface|null $localeResolver
      */
     public function __construct(
-        \Magento\Backend\Block\Template\Context $context,
-        array $data = [],
-        \Magento\Framework\Locale\ResolverInterface $localeResolver = null
+        Context $context,
+        ResolverInterface $localeResolver,
+        array $data = []
     ) {
-        $this->localeResolver = $localeResolver ?:
-            ObjectManager::getInstance()->get(\Magento\Framework\Locale\ResolverInterface::class);
         parent::__construct($context, $data);
+        $this->localeResolver = $localeResolver;
     }
 
     /**
      * Add current time zone to comment, properly translated according to locale
      *
-     * @param \Magento\Framework\Data\Form\Element\AbstractElement $element
+     * @param AbstractElement $element
+     *
      * @return string
      */
-    public function render(\Magento\Framework\Data\Form\Element\AbstractElement $element)
+    public function render(AbstractElement $element): string
     {
         $timeZoneCode = $this->_localeDate->getConfigTimezone();
         $locale = $this->localeResolver->getLocale();
@@ -46,7 +51,7 @@ public function render(\Magento\Framework\Data\Form\Element\AbstractElement $ele
             ->getDisplayName(false, \IntlTimeZone::DISPLAY_LONG, $locale);
         $element->setData(
             'comment',
-            sprintf("%s (%s)", $getLongTimeZoneName, $timeZoneCode)
+            sprintf('%s (%s)', $getLongTimeZoneName, $timeZoneCode)
         );
         return parent::render($element);
     }
diff --git a/app/code/Magento/Analytics/Test/Unit/Block/Adminhtml/System/Config/CollectionTimeLabelTest.php b/app/code/Magento/Analytics/Test/Unit/Block/Adminhtml/System/Config/CollectionTimeLabelTest.php
index 08ee3c356937a..3a98fd6acbf4d 100644
--- a/app/code/Magento/Analytics/Test/Unit/Block/Adminhtml/System/Config/CollectionTimeLabelTest.php
+++ b/app/code/Magento/Analytics/Test/Unit/Block/Adminhtml/System/Config/CollectionTimeLabelTest.php
@@ -3,17 +3,25 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+declare(strict_types=1);
+
 namespace Magento\Analytics\Test\Unit\Block\Adminhtml\System\Config;
 
 use Magento\Analytics\Block\Adminhtml\System\Config\CollectionTimeLabel;
 use Magento\Backend\Block\Template\Context;
 use Magento\Framework\Data\Form;
 use Magento\Framework\Data\Form\Element\AbstractElement;
+use Magento\Framework\Escaper;
 use Magento\Framework\Locale\ResolverInterface;
 use Magento\Framework\Stdlib\DateTime\TimezoneInterface;
 use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
 
-class CollectionTimeLabelTest extends \PHPUnit\Framework\TestCase
+/**
+ * Test class for \Magento\Analytics\Block\Adminhtml\System\Config\CollectionTimeLabel
+ */
+class CollectionTimeLabelTest extends TestCase
 {
     /**
      * @var CollectionTimeLabel
@@ -21,25 +29,33 @@ class CollectionTimeLabelTest extends \PHPUnit\Framework\TestCase
     private $collectionTimeLabel;
 
     /**
-     * @var Context|\PHPUnit_Framework_MockObject_MockObject
+     * @var Context|MockObject
      */
     private $contextMock;
 
     /**
-     * @var TimezoneInterface|\PHPUnit_Framework_MockObject_MockObject
+     * @var ResolverInterface|MockObject
+     */
+    private $localeResolverMock;
+
+    /**
+     * @var Form|MockObject
+     */
+    private $formMock;
+
+    /**
+     * @var TimezoneInterface|MockObject
      */
     private $timeZoneMock;
 
     /**
-     * @var AbstractElement|\PHPUnit_Framework_MockObject_MockObject
+     * @var AbstractElement|MockObject
      */
     private $abstractElementMock;
 
     /**
-     * @var ResolverInterface|\PHPUnit_Framework_MockObject_MockObject
+     * @inheritDoc
      */
-    private $localeResolver;
-
     protected function setUp()
     {
         $this->abstractElementMock = $this->getMockBuilder(AbstractElement::class)
@@ -48,7 +64,7 @@ protected function setUp()
             ->getMock();
 
         $objectManager = new ObjectManager($this);
-        $escaper = $objectManager->getObject(\Magento\Framework\Escaper::class);
+        $escaper = $objectManager->getObject(Escaper::class);
         $reflection = new \ReflectionClass($this->abstractElementMock);
         $reflection_property = $reflection->getProperty('_escaper');
         $reflection_property->setAccessible(true);
@@ -64,35 +80,35 @@ protected function setUp()
         $this->timeZoneMock = $this->getMockBuilder(TimezoneInterface::class)
             ->disableOriginalConstructor()
             ->getMock();
-        $this->contextMock->expects($this->any())
-            ->method('getLocaleDate')
+        $this->contextMock->method('getLocaleDate')
             ->willReturn($this->timeZoneMock);
-        $this->localeResolver = $this->getMockBuilder(ResolverInterface::class)
+        $this->localeResolverMock = $this->getMockBuilder(ResolverInterface::class)
             ->disableOriginalConstructor()
             ->setMethods(['getLocale'])
             ->getMockForAbstractClass();
 
-        $objectManager = new ObjectManager($this);
         $this->collectionTimeLabel = $objectManager->getObject(
             CollectionTimeLabel::class,
             [
                 'context' => $this->contextMock,
-                'localeResolver' => $this->localeResolver
+                'localeResolver' => $this->localeResolverMock
             ]
         );
     }
 
+    /**
+     * Test for \Magento\Analytics\Block\Adminhtml\System\Config\CollectionTimeLabel::render()
+     */
     public function testRender()
     {
-        $timeZone = "America/New_York";
+        $timeZone = 'America/New_York';
         $this->abstractElementMock->setForm($this->formMock);
         $this->timeZoneMock->expects($this->once())
             ->method('getConfigTimezone')
             ->willReturn($timeZone);
-        $this->abstractElementMock->expects($this->any())
-            ->method('getComment')
+        $this->abstractElementMock->method('getComment')
             ->willReturn('Eastern Standard Time (America/New_York)');
-        $this->localeResolver->expects($this->once())
+        $this->localeResolverMock->expects($this->once())
             ->method('getLocale')
             ->willReturn('en_US');
         $this->assertRegExp(