public void InsertContent_Success()
{
// Arrange
var helpCssLink = "Test CSS Link";
var helpHtml = "Test HTML";
var documentPart1 = "<html><he";
var documentPart2 = "ad>{0}Hea";
var documentPart3 = "d Content</head><body>Body Content{1}</b";
var documentPart4 = "ody></html>";
var responseStream = new MemoryStream();
var htmlBuilder = Mocks.Create <IHtmlBuilder>();
htmlBuilder.Setup(b => b.CreateFirstTimeHelpCssLink()).Returns(helpCssLink);
htmlBuilder.Setup(b => b.CreateFirstTimeHelpHtml()).Returns(helpHtml);
var filter = new HttpResponseFilter(responseStream, htmlBuilder.Object);
// Act
filter.Write(Encoding.UTF8.GetBytes(documentPart1), 0, documentPart1.Length);
filter.Write(Encoding.UTF8.GetBytes(documentPart2.Replace("{0}", string.Empty)), 0, documentPart2.Length - 3);
filter.Write(Encoding.UTF8.GetBytes(documentPart3.Replace("{1}", string.Empty)), 0, documentPart3.Length - 3);
filter.Write(Encoding.UTF8.GetBytes(documentPart4), 0, documentPart4.Length);
filter.Flush();
// Assert
responseStream.Position = 0;
var responseReader = new StreamReader(responseStream);
var response = responseReader.ReadToEnd();
Assert.That(response, Is.EqualTo(string.Format(documentPart1 + documentPart2 + documentPart3 + documentPart4, helpCssLink, helpHtml)), "The response should have had the correct content inserted at the correct locations.");
}
