UpdateAlbumRequest() private method

/// Thrown when a null reference is passed to a method that does not accept it as a /// valid argument. ///
private UpdateAlbumRequest ( string url, string title = null, string description = null, AlbumPrivacy privacy = null, AlbumLayout layout = null, string coverId = null, IEnumerable imageIds = null ) : HttpRequestMessage
url string
title string
description string
privacy AlbumPrivacy
layout AlbumLayout
coverId string
imageIds IEnumerable
return System.Net.Http.HttpRequestMessage
        public async Task UpdateAlbumRequest_Equal()
        {
            var client = new ImgurClient("123", "1234");
            var requestBuilder = new AlbumRequestBuilder();

            var mockUrl = $"{client.EndpointUrl}album/AbcdeF";
            var ids = new List<string> {"Abc", "DEF", "XyZ"};

            var request = requestBuilder.UpdateAlbumRequest(
                mockUrl, "TheTitle", "TheDescription",
                AlbumPrivacy.Hidden, AlbumLayout.Horizontal,
                "io9XpoO", ids);

            var expected =
                "privacy=hidden&layout=horizontal&cover=io9XpoO&title=TheTitle&description=TheDescription&ids=Abc%2CDEF%2CXyZ";

            Assert.NotNull(request);
            Assert.Equal(expected, await request.Content.ReadAsStringAsync().ConfigureAwait(false));
            Assert.Equal("https://api.imgur.com/3/album/AbcdeF", request.RequestUri.ToString());
            Assert.Equal(HttpMethod.Post, request.Method);
        }
        public void UpdateAlbumRequest_WithUrlNull_ThrowsArgumentNullException()
        {
            var requestBuilder = new AlbumRequestBuilder();

            var exception = Record.Exception(() => requestBuilder.UpdateAlbumRequest(null));
            Assert.NotNull(exception);
            Assert.IsType<ArgumentNullException>(exception);

            var argNullException = (ArgumentNullException) exception;
            Assert.Equal(argNullException.ParamName, "url");
        }
 public void UpdateAlbumRequest_WithUrlNull_ThrowsArgumentNullException()
 {
     var requestBuilder = new AlbumRequestBuilder();
     requestBuilder.UpdateAlbumRequest(null);
 }