diff --git a/app/code/Magento/Sales/Test/Unit/Model/ValidatorTest.php b/app/code/Magento/Sales/Test/Unit/Model/ValidatorTest.php
new file mode 100644
index 0000000000000..a334cf0e6096f
--- /dev/null
+++ b/app/code/Magento/Sales/Test/Unit/Model/ValidatorTest.php
@@ -0,0 +1,132 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Sales\Test\Unit\Model;
+
+use Magento\Framework\DataObject;
+use Magento\Framework\Exception\ConfigurationMismatchException;
+use Magento\Framework\ObjectManagerInterface;
+use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
+use Magento\Sales\Api\Data\OrderInterface;
+use Magento\Sales\Model\Validator;
+use Magento\Sales\Model\ValidatorInterface;
+use Magento\Sales\Model\ValidatorResultInterface;
+use Magento\Sales\Model\ValidatorResultInterfaceFactory;
+
+/**
+ * @covers \Magento\Sales\Model\Validator
+ */
+class ValidatorTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * Testable Object
+     *
+     * @var Validator
+     */
+    private $validator;
+
+    /**
+     * Object Manager
+     *
+     * @var ObjectManager
+     */
+    private $objectManager;
+
+    /**
+     * @var ObjectManagerInterface|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $objectManagerMock;
+
+    /**
+     * @var ValidatorResultInterfaceFactory|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $validatorResultFactoryMock;
+
+    /**
+     * @var ValidatorResultInterface|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $validatorResultMock;
+
+    /**
+     * @var ValidatorInterface|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $validatorMock;
+
+    /**
+     * @var OrderInterface|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $entityMock;
+
+    /**
+     * Set Up
+     *
+     * @return void
+     */
+    protected function setUp()
+    {
+        $this->objectManagerMock = $this->createMock(ObjectManagerInterface::class);
+        $this->entityMock = $this->createMock(OrderInterface::class);
+        $this->validatorMock = $this->createMock(ValidatorInterface::class);
+        $this->validatorResultFactoryMock = $this->getMockBuilder(ValidatorResultInterfaceFactory::class)
+            ->setMethods(['create'])->disableOriginalConstructor()->getMock();
+        $this->validatorResultMock = $this->createMock(ValidatorResultInterface::class);
+        $this->validatorResultFactoryMock->expects($this->any())->method('create')
+            ->willReturn($this->validatorResultMock);
+        $this->objectManager = new ObjectManager($this);
+        $this->validator = $this->objectManager->getObject(
+            Validator::class,
+            [
+                'objectManager' => $this->objectManagerMock,
+                'validatorResult' => $this->validatorResultFactoryMock,
+            ]
+        );
+    }
+
+    /**
+     * Test validate method
+     *
+     * @return void
+     *
+     * @throws ConfigurationMismatchException
+     */
+    public function testValidate()
+    {
+        $validatorName = 'test';
+        $validators = [$validatorName];
+        $context = new DataObject();
+        $validatorArguments = ['context' => $context];
+        $message = __('Sample message.');
+        $messages = [$message];
+
+        $this->objectManagerMock->expects($this->once())->method('create')
+            ->with($validatorName, $validatorArguments)->willReturn($this->validatorMock);
+        $this->validatorMock->expects($this->once())->method('validate')->with($this->entityMock)
+            ->willReturn($messages);
+        $this->validatorResultMock->expects($this->once())->method('addMessage')->with($message);
+
+        $expected = $this->validatorResultMock;
+        $actual = $this->validator->validate($this->entityMock, $validators, $context);
+        $this->assertEquals($expected, $actual);
+    }
+
+    /**
+     * Test validate method
+     *
+     * @return void
+     *
+     * @throws ConfigurationMismatchException
+     */
+    public function testValidateWithException()
+    {
+        $validatorName = 'test';
+        $validators = [$validatorName];
+        $this->objectManagerMock->expects($this->once())->method('create')->willReturn(null);
+        $this->validatorResultMock->expects($this->never())->method('addMessage');
+        $this->expectException(ConfigurationMismatchException::class);
+        $this->validator->validate($this->entityMock, $validators);
+    }
+}