Covered unit test

Author: engcom-Echo

lib/internal/Magento/Framework/Lock/Test/Unit/Backend/CacheTest.php

@@ -0,0 +1,64 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Framework\Lock\Test\Unit\Backend;
+
+use Magento\Framework\Cache\FrontendInterface;
+use Magento\Framework\Lock\Backend\Cache;
+use Magento\Framework\TestFramework\Unit\Helper\ObjectManager as ObjectManagerHelper;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+
+class CacheTest extends TestCase
+{
+    const LOCK_PREFIX = 'LOCKED_RECORD_INFO_';
+
+    /**
+     * @var FrontendInterface|MockObject
+     */
+    private $frontendCacheMock;
+
+    /**
+     * @var Cache
+     */
+    private $cache;
+
+    /**
+     * @inheritDoc
+     */
+    public function setUp()
+    {
+        $this->frontendCacheMock = $this->createMock(FrontendInterface::class);
+
+        $objectManager = new ObjectManagerHelper($this);
+
+        $this->cache = $objectManager->getObject(
+            Cache::class,
+            [
+                'cache' => $this->frontendCacheMock
+            ]
+        );
+    }
+
+    /**
+     * Verify released a lock.
+     *
+     * @return void
+     */
+    public function testUnlock(): void
+    {
+        $identifier = 'lock_name';
+
+        $this->frontendCacheMock
+            ->expects($this->once())
+            ->method('remove')
+            ->with(self::LOCK_PREFIX . $identifier)
+            ->willReturn(true);
+
+        $this->assertEquals(true, $this->cache->unlock($identifier));
+    }
+}