Headless.IntegrationTests.PostTests.CanPostStreamDirectlyWithoutPreloadingPageTest C# (CSharp) Method

        public void CanPostStreamDirectlyWithoutPreloadingPageTest()
        {
            var firstFileName = Guid.NewGuid().ToString("N") + ".txt";
            var secondFileName = Guid.NewGuid().ToString("N") + ".txt";

            using (var firstStream = new MemoryStream())
            {
                using (var secondStream = new MemoryStream())
                {
                    using (var browser = new Browser())
                    {
                        var firstFileContent = Guid.NewGuid().ToString();
                        var firstFileBuffer = Encoding.UTF8.GetBytes(firstFileContent);
                        var secondFileContent = Guid.NewGuid().ToString();
                        var secondFileBuffer = Encoding.UTF8.GetBytes(secondFileContent);

                        firstStream.Write(firstFileBuffer, 0, firstFileBuffer.Length);
                        secondStream.Write(secondFileBuffer, 0, secondFileBuffer.Length);

                        firstStream.Position = 0;
                        secondStream.Position = 0;

                        var textValue = Guid.NewGuid().ToString();

                        var parameters = new List<PostEntry>
                        {
                            new PostFileStreamEntry("files", firstFileName, firstStream),
                            new PostFileStreamEntry("files", secondFileName, secondStream),
                            new PostEntry("SomeData", textValue)
                        };

                        var postedPage = browser.PostTo<FormFilePage>(parameters);

                        postedPage.Result.TraceResults();

                        postedPage.SomeData.Value.Should().Be(textValue);
                        postedPage.FileCount.Text.Should().Be("2");

                        var firstFileCells =
                            postedPage.PostedFiles.Find<HtmlTableRow>()
                                .ByPredicate(x => x.Html.Contains(firstFileName))
                                .Cells.ToList();

                        firstFileCells[0].Text.Should().Be(firstFileName);
                        firstFileCells[1].Text.Should().Be("text/plain");
                        firstFileCells[2].Text.Should().Be(firstFileContent);

                        var secondFileCells =
                            postedPage.PostedFiles.Find<HtmlTableRow>()
                                .ByPredicate(x => x.Html.Contains(secondFileName))
                                .Cells.ToList();

                        secondFileCells[0].Text.Should().Be(secondFileName);
                        secondFileCells[1].Text.Should().Be("text/plain");
                        secondFileCells[2].Text.Should().Be(secondFileContent);
                    }
                }
            }
        }