public async Task CreateGalleryItemCommentAsync_WithCommentNull_ThrowsArgumentNullException()
        {
            var client   = new ImgurClient("123", "1234");
            var endpoint = new GalleryEndpoint(client);

            var exception =
                await
                Record.ExceptionAsync(
                    async() => await endpoint.CreateGalleryItemCommentAsync(null, "Xyz").ConfigureAwait(false))
                .ConfigureAwait(false);

            Assert.NotNull(exception);
            Assert.IsType <ArgumentNullException>(exception);
        }
        public async Task CreateGalleryItemCommentAsync_Equal()
        {
            var mockUrl      = "https://api.imgur.com/3/gallery/dO484/comment";
            var mockResponse = new HttpResponseMessage(HttpStatusCode.OK)
            {
                Content = new StringContent(MockGalleryEndpointResponses.CreateGalleryItemComment)
            };

            var client   = new ImgurClient("123", "1234", MockOAuth2Token);
            var endpoint = new GalleryEndpoint(client, new HttpClient(new MockHttpMessageHandler(mockUrl, mockResponse)));
            var comment  = await endpoint.CreateGalleryItemCommentAsync("Hello World!", "dO484").ConfigureAwait(false);

            Assert.NotNull(comment);
            Assert.Equal(548357773, comment);
        }