public void GetBlobSasUrl_CloudBlobName_SasUrlReturned()
        {
            string blobName        = NewRandomString();
            string sharedAccessKey = NewRandomString();
            string uri             = NewRandomUrl();

            _blobContainerRepository.Setup(_ => _.GetBlockBlobReference(blobName, It.IsAny <string>()))
            .Returns(_cloudBlob.Object);

            _cloudBlob.Setup(_ => _.GetSharedAccessSignature(It.IsAny <SharedAccessBlobPolicy>()))
            .Returns(sharedAccessKey);

            _cloudBlob.Setup(_ => _.Uri).Returns(new Uri(uri));

            string sasUrl = _blobClient.GetBlobSasUrl(blobName, new DateTimeOffset(), new SharedAccessBlobPermissions());

            sasUrl.Should()
            .Be($"{uri}{sharedAccessKey}");
        }