上传图像到云单元测试

我正在尝试将图像上传到云，我希望能够测试这一点，这是我已经尝试过的，我真的不完全明白我在做什么，所以如果有人能告诉我该怎么做，我会很感激的。

到目前为止，我已经包含了这个方法的主方法和那个方法的测试。

public static String UploadToCloud(string fileName)
    {
        try
        {
            SetUpConnection();
            #region Upload a File from local storage to the Cloud
            // Get a reference to the blob.
            blob = blobContainer.GetBlobReference("Images/" + fileName.Substring(fileName.LastIndexOf('''')));
            blob.UploadFile(fileName);
            return blob.Uri.ToString();
            #endregion
        }
        catch (StorageClientException e)
        {
            Console.WriteLine("Storage client error encountered: " + e.Message);
            return "Upload failed";
        }
    }
/// <summary>
    ///A test for UploadToCloud
    ///</summary>
    [TestMethod()]
    public void UploadToCloudTest()
    {
        string fileName = "https://kevin.blob.core.windows.net/cp300/Images//skin-mole.jpg";
        Image expected = Image.FromFile(@"C:'Users'Public'Pictures'Sample Pictures'skin-mole.jpg");
        string actual;
        actual = CloudConnection.UploadToCloud(fileName);
        //Compares to images and checks they are exactly the same
        MemoryStream ms = new MemoryStream();
        expected.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
        String expectedBitmap = Convert.ToBase64String(ms.ToArray());
        ms.Position = 0;
        actual.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
        String actualBitmap = Convert.ToBase64String(ms.ToArray());
        Assert.AreEqual(expectedBitmap, actualBitmap); 
        //Assert.AreEqual(expected, actual);
        //Assert.Inconclusive("Verify the correctness of this test method.");
    }