B2B-2024: [AWS S3] [Integration Tests]: Investigate Test Failures in cms module

Author: oshmyheliuk

dev/tests/integration/testsuite/Magento/Cms/Controller/Adminhtml/Wysiwyg/Images/UploadTest.php

@@ -87,7 +87,8 @@ protected function setUp(): void
         /** @var \Magento\Cms\Helper\Wysiwyg\Images $imagesHelper */
         $this->imagesHelper = $this->objectManager->get(\Magento\Cms\Helper\Wysiwyg\Images::class);
         $this->mediaDirectory = $this->filesystem->getDirectoryWrite(DirectoryList::MEDIA);
-        $this->fullDirectoryPath = $this->imagesHelper->getStorageRoot() . DIRECTORY_SEPARATOR . $directoryName;
+        $this->fullDirectoryPath = rtrim($this->imagesHelper->getStorageRoot(), '/')
+            . DIRECTORY_SEPARATOR . $directoryName;
         $this->fullExcludedDirectoryPath = $this->imagesHelper->getStorageRoot()
             . DIRECTORY_SEPARATOR . $excludedDirName;
         $this->mediaDirectory->create($this->mediaDirectory->getRelativePath($this->fullDirectoryPath));